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Description subsection </button> <ul id="toc-Description-sublist" class="vector-toc-list"> <li id="toc-Venom" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Venom"> <div class="vector-toc-text"> 2.1 Venom </div> </a> <ul id="toc-Venom-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Electrolocation" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Electrolocation"> <div class="vector-toc-text"> 2.2 Electrolocation </div> </a> <ul id="toc-Electrolocation-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Eyes" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Eyes"> <div class="vector-toc-text"> 2.3 Eyes </div> </a> <ul id="toc-Eyes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Biofluorescence" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Biofluorescence"> <div class="vector-toc-text"> 2.4 Biofluorescence </div> </a> <ul id="toc-Biofluorescence-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Distribution,_ecology,_and_behaviour" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Distribution,_ecology,_and_behaviour"> <div class="vector-toc-text"> 3 Distribution, ecology, and behaviour </div> </a> <button aria-controls="toc-Distribution,_ecology,_and_behaviour-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle Distribution, ecology, and behaviour subsection </button> <ul id="toc-Distribution,_ecology,_and_behaviour-sublist" class="vector-toc-list"> <li id="toc-Diet" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Diet"> <div class="vector-toc-text"> 3.1 Diet </div> </a> <ul id="toc-Diet-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Reproduction" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Reproduction"> <div class="vector-toc-text"> 3.2 Reproduction </div> </a> <ul id="toc-Reproduction-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Evolution" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Evolution"> <div class="vector-toc-text"> 4 Evolution </div> </a> <button aria-controls="toc-Evolution-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle Evolution subsection </button> <ul id="toc-Evolution-sublist" class="vector-toc-list"> <li id="toc-Genome" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Genome"> <div class="vector-toc-text"> 4.1 Genome </div> </a> <ul id="toc-Genome-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Conservation" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Conservation"> <div class="vector-toc-text"> 5 Conservation </div> </a> <button aria-controls="toc-Conservation-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle Conservation subsection </button> <ul id="toc-Conservation-sublist" class="vector-toc-list"> <li id="toc-Status_and_threats" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Status_and_threats"> <div class="vector-toc-text"> 5.1 Status and threats </div> </a> <ul id="toc-Status_and_threats-sublist" class="vector-toc-list"> <li id="toc-Habitat_destruction" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Habitat_destruction"> <div class="vector-toc-text"> 5.1.1 Habitat destruction </div> </a> <ul id="toc-Habitat_destruction-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Disease" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Disease"> <div class="vector-toc-text"> 5.1.2 Disease </div> </a> <ul id="toc-Disease-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Wildlife_sanctuaries" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Wildlife_sanctuaries"> <div class="vector-toc-text"> 5.2 Wildlife sanctuaries </div> </a> <ul id="toc-Wildlife_sanctuaries-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Captivity" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Captivity"> <div class="vector-toc-text"> 5.3 Captivity </div> </a> <ul id="toc-Captivity-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Human_interactions" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Human_interactions"> <div class="vector-toc-text"> 6 Human interactions </div> </a> <button aria-controls="toc-Human_interactions-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle Human interactions subsection </button> <ul id="toc-Human_interactions-sublist" class="vector-toc-list"> <li id="toc-Usage" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Usage"> <div class="vector-toc-text"> 6.1 Usage </div> </a> <ul id="toc-Usage-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Cultural_references" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Cultural_references"> <div class="vector-toc-text"> 6.2 Cultural references </div> </a> <ul id="toc-Cultural_references-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> 7 See also </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Footnotes" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Footnotes"> <div class="vector-toc-text"> 8 Footnotes </div> </a> <ul id="toc-Footnotes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Citations" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Citations"> <div class="vector-toc-text"> 9 Citations </div> </a> <ul id="toc-Citations-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> 10 References </div> </a> <button aria-controls="toc-References-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle References subsection </button> <ul id="toc-References-sublist" class="vector-toc-list"> <li id="toc-Books" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Books"> <div class="vector-toc-text"> 10.1 Books </div> </a> <ul id="toc-Books-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Documentaries" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Documentaries"> <div class="vector-toc-text"> 10.2 Documentaries </div> </a> <ul id="toc-Documentaries-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> 11 External links </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" > Toggle the table of contents </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading">Platypus</h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 107 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-107" aria-hidden="true" > 107 languages </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Eendbekdier" title="Eendbekdier – Afrikaans" lang="af" hreflang="af" data-title="Eendbekdier" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target">Afrikaans</a></li><li class="interlanguage-link interwiki-ang mw-list-item"><a href="https://ang.wikipedia.org/wiki/W%C3%A6terwand" title="Wæterwand – Old English" lang="ang" hreflang="ang" data-title="Wæterwand" data-language-autonym="Ænglisc" data-language-local-name="Old English" class="interlanguage-link-target">Ænglisc</a></li><li class="interlanguage-link interwiki-ar badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://ar.wikipedia.org/wiki/%D8%AE%D9%84%D8%AF_%D8%A7%D9%84%D9%85%D8%A7%D8%A1" title="خلد الماء – Arabic" lang="ar" hreflang="ar" data-title="خلد الماء" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target">العربية</a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Ornithorhynchus_anatinus" title="Ornithorhynchus anatinus – Aragonese" lang="an" hreflang="an" data-title="Ornithorhynchus anatinus" data-language-autonym="Aragonés" data-language-local-name="Aragonese" class="interlanguage-link-target">Aragonés</a></li><li class="interlanguage-link interwiki-as mw-list-item"><a href="https://as.wikipedia.org/wiki/%E0%A6%B9%E0%A6%BE%E0%A6%81%E0%A6%B9%E0%A6%A0%E0%A7%81%E0%A6%81%E0%A6%9F%E0%A7%80%E0%A6%AF%E0%A6%BC%E0%A6%BE" title="হাঁহঠুঁটীয়া – Assamese" lang="as" hreflang="as" data-title="হাঁহঠুঁটীয়া" data-language-autonym="অসমীয়া" data-language-local-name="Assamese" class="interlanguage-link-target">অসমীয়া</a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Ornithorhynchus_anatinus" title="Ornithorhynchus anatinus – Asturian" lang="ast" hreflang="ast" data-title="Ornithorhynchus anatinus" data-language-autonym="Asturianu" data-language-local-name="Asturian" class="interlanguage-link-target">Asturianu</a></li><li class="interlanguage-link interwiki-ay mw-list-item"><a href="https://ay.wikipedia.org/wiki/Urniturinku" title="Urniturinku – Aymara" lang="ay" hreflang="ay" data-title="Urniturinku" data-language-autonym="Aymar aru" data-language-local-name="Aymara" class="interlanguage-link-target">Aymar aru</a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/%C3%96rd%C9%99kburun" title="Ördəkburun – Azerbaijani" lang="az" hreflang="az" data-title="Ördəkburun" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target">Azərbaycanca</a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%D8%A7%D8%A4%D8%B1%D8%AF%DA%A9%D8%A8%D9%88%D8%B1%D9%88%D9%86" title="اؤردکبورون – South Azerbaijani" lang="azb" hreflang="azb" data-title="اؤردکبورون" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target">تۆرکجه</a></li><li class="interlanguage-link interwiki-ban mw-list-item"><a href="https://ban.wikipedia.org/wiki/Platypus" title="Platypus – Balinese" lang="ban" hreflang="ban" data-title="Platypus" data-language-autonym="Basa Bali" data-language-local-name="Balinese" class="interlanguage-link-target">Basa Bali</a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%AA%E0%A7%8D%E0%A6%B2%E0%A6%BE%E0%A6%9F%E0%A6%BF%E0%A6%AA%E0%A6%BE%E0%A6%B8" title="প্লাটিপাস – Bangla" lang="bn" hreflang="bn" data-title="প্লাটিপাস" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target">বাংলা</a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Ah-chh%C3%B9i-si%C5%AB" title="Ah-chhùi-siū – Minnan" lang="nan" hreflang="nan" data-title="Ah-chhùi-siū" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnan" class="interlanguage-link-target">閩南語 / Bân-lâm-gú</a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%9A%D0%B0%D1%87%D0%BA%D0%B0%D0%BD%D0%BE%D1%81" title="Качканос – Belarusian" lang="be" hreflang="be" data-title="Качканос" data-language-autonym="Беларуская" data-language-local-name="Belarusian" class="interlanguage-link-target">Беларуская</a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%9A%D0%B0%D1%87%D0%BA%D0%B0%D0%BD%D0%BE%D1%81" title="Качканос – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Качканос" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target">Беларуская (тарашкевіца)</a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9F%D1%82%D0%B8%D1%86%D0%B5%D1%87%D0%BE%D0%B2%D0%BA%D0%B0" title="Птицечовка – Bulgarian" lang="bg" hreflang="bg" data-title="Птицечовка" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target">Български</a></li><li class="interlanguage-link interwiki-bo mw-list-item"><a href="https://bo.wikipedia.org/wiki/%E0%BD%A6%E0%BE%B2%E0%BD%98%E0%BC%8B%E0%BD%84%E0%BD%84%E0%BC%8B%E0%BD%98%E0%BD%86%E0%BD%B4%E0%BC%8B%E0%BD%85%E0%BD%93%E0%BC%8D" title="སྲམ་ངང་མཆུ་ཅན། – Tibetan" lang="bo" hreflang="bo" data-title="སྲམ་ངང་མཆུ་ཅན།" data-language-autonym="བོད་ཡིག" data-language-local-name="Tibetan" class="interlanguage-link-target">བོད་ཡིག</a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/%C4%8Cudnovati_kljuna%C5%A1" title="Čudnovati kljunaš – Bosnian" lang="bs" hreflang="bs" data-title="Čudnovati kljunaš" data-language-autonym="Bosanski" data-language-local-name="Bosnian" class="interlanguage-link-target">Bosanski</a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Ornitorink" title="Ornitorink – Breton" lang="br" hreflang="br" data-title="Ornitorink" data-language-autonym="Brezhoneg" data-language-local-name="Breton" class="interlanguage-link-target">Brezhoneg</a></li><li class="interlanguage-link interwiki-ca badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://ca.wikipedia.org/wiki/Ornitorrinc" title="Ornitorrinc – Catalan" lang="ca" hreflang="ca" data-title="Ornitorrinc" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target">Català</a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%9A%C4%83%D0%B2%D0%B0%D0%BA%D0%B0%D0%BB%D1%81%C4%83%D0%BC%D1%81%D0%B0" title="Кăвакалсăмса – Chuvash" lang="cv" hreflang="cv" data-title="Кăвакалсăмса" data-language-autonym="Чӑвашла" data-language-local-name="Chuvash" class="interlanguage-link-target">Чӑвашла</a></li><li class="interlanguage-link interwiki-ceb mw-list-item"><a href="https://ceb.wikipedia.org/wiki/Ornithorhynchus_anatinus" title="Ornithorhynchus anatinus – Cebuano" lang="ceb" hreflang="ceb" data-title="Ornithorhynchus anatinus" data-language-autonym="Cebuano" data-language-local-name="Cebuano" class="interlanguage-link-target">Cebuano</a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Ptakopysk_podivn%C3%BD" title="Ptakopysk podivný – Czech" lang="cs" hreflang="cs" data-title="Ptakopysk podivný" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target">Čeština</a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Hwyatbig" title="Hwyatbig – Welsh" lang="cy" hreflang="cy" data-title="Hwyatbig" data-language-autonym="Cymraeg" data-language-local-name="Welsh" class="interlanguage-link-target">Cymraeg</a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/N%C3%A6bdyr" title="Næbdyr – Danish" lang="da" hreflang="da" data-title="Næbdyr" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target">Dansk</a></li><li class="interlanguage-link interwiki-de badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://de.wikipedia.org/wiki/Schnabeltier" title="Schnabeltier – German" lang="de" hreflang="de" data-title="Schnabeltier" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target">Deutsch</a></li><li class="interlanguage-link interwiki-nv mw-list-item"><a href="https://nv.wikipedia.org/wiki/Naal%CA%BCee%C5%82%C3%ADdaa%CA%BC%C3%AD" title="Naalʼeełídaaʼí – Navajo" lang="nv" hreflang="nv" data-title="Naalʼeełídaaʼí" data-language-autonym="Diné bizaad" data-language-local-name="Navajo" class="interlanguage-link-target">Diné bizaad</a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Nokkloom" title="Nokkloom – Estonian" lang="et" hreflang="et" data-title="Nokkloom" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target">Eesti</a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A0%CE%BB%CE%B1%CF%84%CF%8D%CF%80%CE%BF%CE%B4%CE%B1%CF%82" title="Πλατύποδας – Greek" lang="el" hreflang="el" data-title="Πλατύποδας" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target">Ελληνικά</a></li><li class="interlanguage-link interwiki-es badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://es.wikipedia.org/wiki/Ornithorhynchus_anatinus" title="Ornithorhynchus anatinus – Spanish" lang="es" hreflang="es" data-title="Ornithorhynchus anatinus" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target">Español</a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Ornitorinko" title="Ornitorinko – Esperanto" lang="eo" hreflang="eo" data-title="Ornitorinko" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target">Esperanto</a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Ornitorrinko" title="Ornitorrinko – Basque" lang="eu" hreflang="eu" data-title="Ornitorrinko" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target">Euskara</a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%86%D9%88%DA%A9%E2%80%8C%D8%A7%D8%B1%D8%AF%DA%A9%DB%8C" title="نوک‌اردکی – Persian" lang="fa" hreflang="fa" data-title="نوک‌اردکی" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target">فارسی</a></li><li class="interlanguage-link interwiki-fr badge-Q17437798 badge-goodarticle mw-list-item" title="good article badge"><a href="https://fr.wikipedia.org/wiki/Ornithorynque" title="Ornithorynque – French" lang="fr" hreflang="fr" data-title="Ornithorynque" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target">Français</a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Platapas" title="Platapas – Irish" lang="ga" hreflang="ga" data-title="Platapas" data-language-autonym="Gaeilge" data-language-local-name="Irish" class="interlanguage-link-target">Gaeilge</a></li><li class="interlanguage-link interwiki-gv mw-list-item"><a href="https://gv.wikipedia.org/wiki/Platypus" title="Platypus – Manx" lang="gv" hreflang="gv" data-title="Platypus" data-language-autonym="Gaelg" data-language-local-name="Manx" class="interlanguage-link-target">Gaelg</a></li><li class="interlanguage-link interwiki-gd mw-list-item"><a href="https://gd.wikipedia.org/wiki/Platapas_gob-tunnaige" title="Platapas gob-tunnaige – Scottish Gaelic" lang="gd" hreflang="gd" data-title="Platapas gob-tunnaige" data-language-autonym="Gàidhlig" data-language-local-name="Scottish Gaelic" class="interlanguage-link-target">Gàidhlig</a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Ornitorrinco" title="Ornitorrinco – Galician" lang="gl" hreflang="gl" data-title="Ornitorrinco" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target">Galego</a></li><li class="interlanguage-link interwiki-ko badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://ko.wikipedia.org/wiki/%EC%98%A4%EB%A6%AC%EB%84%88%EA%B5%AC%EB%A6%AC" title="오리너구리 – Korean" lang="ko" hreflang="ko" data-title="오리너구리" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target">한국어</a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%B2%D5%A1%D5%A4%D5%A1%D5%AF%D5%BF%D5%B8%D6%82%D6%81%D5%B6%D5%A5%D6%80" title="Բադակտուցներ – Armenian" lang="hy" hreflang="hy" data-title="Բադակտուցներ" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target">Հայերեն</a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%AA%E0%A5%8D%E0%A4%B2%E0%A5%88%E0%A4%9F%E0%A4%BF%E0%A4%AA%E0%A4%B8" title="प्लैटिपस – Hindi" lang="hi" hreflang="hi" data-title="प्लैटिपस" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target">हिन्दी</a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/%C4%8Cudnovati_kljuna%C5%A1" title="Čudnovati kljunaš – Croatian" lang="hr" hreflang="hr" data-title="Čudnovati kljunaš" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target">Hrvatski</a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Ornitorinko" title="Ornitorinko – Ido" lang="io" hreflang="io" data-title="Ornitorinko" data-language-autonym="Ido" data-language-local-name="Ido" class="interlanguage-link-target">Ido</a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Platipus" title="Platipus – Indonesian" lang="id" hreflang="id" data-title="Platipus" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target">Bahasa Indonesia</a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Ornithorhynchus_anatinus" title="Ornithorhynchus anatinus – Interlingua" lang="ia" hreflang="ia" data-title="Ornithorhynchus anatinus" data-language-autonym="Interlingua" data-language-local-name="Interlingua" class="interlanguage-link-target">Interlingua</a></li><li class="interlanguage-link interwiki-os mw-list-item"><a href="https://os.wikipedia.org/wiki/%D0%91%D0%B0%D0%B1%D1%8B%D0%B7%D0%B2%D1%8B%D0%BD%D0%B4%D0%B7" title="Бабызвындз – Ossetic" lang="os" hreflang="os" data-title="Бабызвындз" data-language-autonym="Ирон" data-language-local-name="Ossetic" class="interlanguage-link-target">Ирон</a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Brei%C3%B0nefur" title="Breiðnefur – Icelandic" lang="is" hreflang="is" data-title="Breiðnefur" data-language-autonym="Íslenska" data-language-local-name="Icelandic" class="interlanguage-link-target">Íslenska</a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Ornithorhynchus_anatinus" title="Ornithorhynchus anatinus – Italian" lang="it" hreflang="it" data-title="Ornithorhynchus anatinus" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target">Italiano</a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%91%D7%A8%D7%95%D7%95%D7%96%D7%9F" title="ברווזן – Hebrew" lang="he" hreflang="he" data-title="ברווזן" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target">עברית</a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Platypus" title="Platypus – Javanese" lang="jv" hreflang="jv" data-title="Platypus" data-language-autonym="Jawa" data-language-local-name="Javanese" class="interlanguage-link-target">Jawa</a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%98%E1%83%AE%E1%83%95%E1%83%9C%E1%83%98%E1%83%A1%E1%83%99%E1%83%90%E1%83%A0%E1%83%A2%E1%83%90" title="იხვნისკარტა – Georgian" lang="ka" hreflang="ka" data-title="იხვნისკარტა" data-language-autonym="ქართული" data-language-local-name="Georgian" class="interlanguage-link-target">ქართული</a></li><li class="interlanguage-link interwiki-csb mw-list-item"><a href="https://csb.wikipedia.org/wiki/Dz%C3%ABb%C3%B4l" title="Dzëbôl – Kashubian" lang="csb" hreflang="csb" data-title="Dzëbôl" data-language-autonym="Kaszëbsczi" data-language-local-name="Kashubian" class="interlanguage-link-target">Kaszëbsczi</a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D2%AE%D0%B9%D1%80%D0%B5%D0%BA%D1%82%D2%B1%D0%BC%D1%81%D1%8B%D2%9B" title="Үйректұмсық – Kazakh" lang="kk" hreflang="kk" data-title="Үйректұмсық" data-language-autonym="Қазақша" data-language-local-name="Kazakh" class="interlanguage-link-target">Қазақша</a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Kinyamadege" title="Kinyamadege – Swahili" lang="sw" hreflang="sw" data-title="Kinyamadege" data-language-autonym="Kiswahili" data-language-local-name="Swahili" class="interlanguage-link-target">Kiswahili</a></li><li class="interlanguage-link interwiki-avk mw-list-item"><a href="https://avk.wikipedia.org/wiki/Gimpol" title="Gimpol – Kotava" lang="avk" hreflang="avk" data-title="Gimpol" data-language-autonym="Kotava" data-language-local-name="Kotava" class="interlanguage-link-target">Kotava</a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/Pozmi%C5%9Fk" title="Pozmişk – Kurdish" lang="ku" hreflang="ku" data-title="Pozmişk" data-language-autonym="Kurdî" data-language-local-name="Kurdish" class="interlanguage-link-target">Kurdî</a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Ornithorhynchus_anatinus" title="Ornithorhynchus anatinus – Latin" lang="la" hreflang="la" data-title="Ornithorhynchus anatinus" data-language-autonym="Latina" data-language-local-name="Latin" class="interlanguage-link-target">Latina</a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/P%C4%AB%C4%BCkn%C4%81bis" title="Pīļknābis – Latvian" lang="lv" hreflang="lv" data-title="Pīļknābis" data-language-autonym="Latviešu" data-language-local-name="Latvian" class="interlanguage-link-target">Latviešu</a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/An%C4%8Diasnapis" title="Ančiasnapis – Lithuanian" lang="lt" hreflang="lt" data-title="Ančiasnapis" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target">Lietuvių</a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Snavelbie%C3%ABs" title="Snavelbieës – Limburgish" lang="li" hreflang="li" data-title="Snavelbieës" data-language-autonym="Limburgs" data-language-local-name="Limburgish" class="interlanguage-link-target">Limburgs</a></li><li class="interlanguage-link interwiki-lfn mw-list-item"><a href="https://lfn.wikipedia.org/wiki/Ornitorinco" title="Ornitorinco – Lingua Franca Nova" lang="lfn" hreflang="lfn" data-title="Ornitorinco" data-language-autonym="Lingua Franca Nova" data-language-local-name="Lingua Franca Nova" class="interlanguage-link-target">Lingua Franca Nova</a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Kacsacs%C5%91r%C5%B1_eml%C5%91s" title="Kacsacsőrű emlős – Hungarian" lang="hu" hreflang="hu" data-title="Kacsacsőrű emlős" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target">Magyar</a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%9A%D0%BB%D1%83%D0%BD%D0%B0%D1%80" title="Клунар – Macedonian" lang="mk" hreflang="mk" data-title="Клунар" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target">Македонски</a></li><li class="interlanguage-link interwiki-mg mw-list-item"><a href="https://mg.wikipedia.org/wiki/Platiposy" title="Platiposy – Malagasy" lang="mg" hreflang="mg" data-title="Platiposy" data-language-autonym="Malagasy" data-language-local-name="Malagasy" class="interlanguage-link-target">Malagasy</a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%AA%E0%B5%8D%E0%B4%B2%E0%B4%BE%E0%B4%B1%E0%B5%8D%E0%B4%B1%E0%B4%BF%E0%B4%AA%E0%B4%B8%E0%B5%8D" title="പ്ലാറ്റിപസ് – Malayalam" lang="ml" hreflang="ml" data-title="പ്ലാറ്റിപസ്" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target">മലയാളം</a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D8%AE%D9%84%D8%AF_%D8%A7%D9%84%D9%85%D8%A7%D8%A1" title="خلد الماء – Egyptian Arabic" lang="arz" hreflang="arz" data-title="خلد الماء" data-language-autonym="مصرى" data-language-local-name="Egyptian Arabic" class="interlanguage-link-target">مصرى</a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Platipus" title="Platipus – Malay" lang="ms" hreflang="ms" data-title="Platipus" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target">Bahasa Melayu</a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%98%E1%80%B2%E1%80%90%E1%80%B0%E1%80%96%E1%80%BB%E1%80%B6%E1%80%90%E1%80%B0%E1%80%80%E1%80%B1%E1%80%AC%E1%80%84%E1%80%BA" title="ဘဲတူဖျံတူကောင် – Burmese" lang="my" hreflang="my" data-title="ဘဲတူဖျံတူကောင်" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="Burmese" class="interlanguage-link-target">မြန်မာဘာသာ</a></li><li class="interlanguage-link interwiki-nl badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://nl.wikipedia.org/wiki/Vogelbekdier" title="Vogelbekdier – Dutch" lang="nl" hreflang="nl" data-title="Vogelbekdier" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target">Nederlands</a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%82%AB%E3%83%A2%E3%83%8E%E3%83%8F%E3%82%B7" title="カモノハシ – Japanese" lang="ja" hreflang="ja" data-title="カモノハシ" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target">日本語</a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Nebbdyr" title="Nebbdyr – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Nebbdyr" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target">Norsk bokmål</a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Nebbdyr" title="Nebbdyr – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Nebbdyr" data-language-autonym="Norsk nynorsk" data-language-local-name="Norwegian Nynorsk" class="interlanguage-link-target">Norsk nynorsk</a></li><li class="interlanguage-link interwiki-or mw-list-item"><a href="https://or.wikipedia.org/wiki/%E0%AC%AA%E0%AD%8D%E0%AC%B2%E0%AC%BE%E0%AC%9F%E0%AC%BF%E0%AC%AA%E0%AC%B8" title="ପ୍ଲାଟିପସ – Odia" lang="or" hreflang="or" data-title="ପ୍ଲାଟିପସ" data-language-autonym="ଓଡ଼ିଆ" data-language-local-name="Odia" class="interlanguage-link-target">ଓଡ଼ିଆ</a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/O%CA%BBrdakburun" title="Oʻrdakburun – Uzbek" lang="uz" hreflang="uz" data-title="Oʻrdakburun" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="Uzbek" class="interlanguage-link-target">Oʻzbekcha / ўзбекча</a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D9%BE%D9%84%DB%92_%D9%B9%DB%8C%D9%BE%D8%B3" title="پلے ٹیپس – Western Punjabi" lang="pnb" hreflang="pnb" data-title="پلے ٹیپس" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target">پنجابی</a></li><li class="interlanguage-link interwiki-pl badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://pl.wikipedia.org/wiki/Dziobak_australijski" title="Dziobak australijski – Polish" lang="pl" hreflang="pl" data-title="Dziobak australijski" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target">Polski</a></li><li class="interlanguage-link interwiki-pt badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://pt.wikipedia.org/wiki/Ornitorrinco" title="Ornitorrinco – Portuguese" lang="pt" hreflang="pt" data-title="Ornitorrinco" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target">Português</a></li><li class="interlanguage-link interwiki-crh mw-list-item"><a href="https://crh.wikipedia.org/wiki/%C3%96rdekmurun" title="Ördekmurun – Crimean Tatar" lang="crh" hreflang="crh" data-title="Ördekmurun" data-language-autonym="Qırımtatarca" data-language-local-name="Crimean Tatar" class="interlanguage-link-target">Qırımtatarca</a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Ornitorinc" title="Ornitorinc – Romanian" lang="ro" hreflang="ro" data-title="Ornitorinc" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target">Română</a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/P%27altachaki" title="P'altachaki – Quechua" lang="qu" hreflang="qu" data-title="P'altachaki" data-language-autonym="Runa Simi" data-language-local-name="Quechua" class="interlanguage-link-target">Runa Simi</a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A3%D1%82%D0%BA%D0%BE%D0%BD%D0%BE%D1%81" title="Утконос – Russian" lang="ru" hreflang="ru" data-title="Утконос" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target">Русский</a></li><li class="interlanguage-link interwiki-sm mw-list-item"><a href="https://sm.wikipedia.org/wiki/Pilatipusi" title="Pilatipusi – Samoan" lang="sm" hreflang="sm" data-title="Pilatipusi" data-language-autonym="Gagana Samoa" data-language-local-name="Samoan" class="interlanguage-link-target">Gagana Samoa</a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/Platypus" title="Platypus – Scots" lang="sco" hreflang="sco" data-title="Platypus" data-language-autonym="Scots" data-language-local-name="Scots" class="interlanguage-link-target">Scots</a></li><li class="interlanguage-link interwiki-stq mw-list-item"><a href="https://stq.wikipedia.org/wiki/Snoabeldiert" title="Snoabeldiert – Saterland Frisian" lang="stq" hreflang="stq" data-title="Snoabeldiert" data-language-autonym="Seeltersk" data-language-local-name="Saterland Frisian" class="interlanguage-link-target">Seeltersk</a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Sqepori" title="Sqepori – Albanian" lang="sq" hreflang="sq" data-title="Sqepori" data-language-autonym="Shqip" data-language-local-name="Albanian" class="interlanguage-link-target">Shqip</a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Platypus" title="Platypus – Simple English" lang="en-simple" hreflang="en-simple" data-title="Platypus" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target">Simple English</a></li><li class="interlanguage-link interwiki-sd mw-list-item"><a href="https://sd.wikipedia.org/wiki/%D9%BE%D9%84%D9%8A%D9%BD%D9%8A%D9%BE%D8%B3" title="پليٽيپس – Sindhi" lang="sd" hreflang="sd" data-title="پليٽيپس" data-language-autonym="سنڌي" data-language-local-name="Sindhi" class="interlanguage-link-target">سنڌي</a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Vt%C3%A1kopysk_divn%C3%BD" title="Vtákopysk divný – Slovak" lang="sk" hreflang="sk" data-title="Vtákopysk divný" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target">Slovenčina</a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Kljuna%C5%A1" title="Kljunaš – Slovenian" lang="sl" hreflang="sl" data-title="Kljunaš" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target">Slovenščina</a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%9A%D1%99%D1%83%D0%BD%D0%B0%D1%80" title="Кљунар – Serbian" lang="sr" hreflang="sr" data-title="Кљунар" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target">Српски / srpski</a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/%C4%8Cudnovati_kljuna%C5%A1" title="Čudnovati kljunaš – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Čudnovati kljunaš" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target">Srpskohrvatski / српскохрватски</a></li><li class="interlanguage-link interwiki-fi badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://fi.wikipedia.org/wiki/Vesinokkael%C3%A4in" title="Vesinokkaeläin – Finnish" lang="fi" hreflang="fi" data-title="Vesinokkaeläin" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target">Suomi</a></li><li class="interlanguage-link interwiki-sv badge-Q17437798 badge-goodarticle mw-list-item" title="good article badge"><a href="https://sv.wikipedia.org/wiki/N%C3%A4bbdjur" title="Näbbdjur – Swedish" lang="sv" hreflang="sv" data-title="Näbbdjur" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target">Svenska</a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Platypus" title="Platypus – Tagalog" lang="tl" hreflang="tl" data-title="Platypus" data-language-autonym="Tagalog" data-language-local-name="Tagalog" class="interlanguage-link-target">Tagalog</a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%B5%E0%AE%BE%E0%AE%A4%E0%AF%8D%E0%AE%A4%E0%AE%B2%E0%AE%95%E0%AE%BF" title="வாத்தலகி – Tamil" lang="ta" hreflang="ta" data-title="வாத்தலகி" 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Click here for more information."><img alt="Featured article" src="//upload.wikimedia.org/wikipedia/en/thumb/e/e7/Cscr-featured.svg/20px-Cscr-featured.svg.png" decoding="async" width="20" height="19" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/e/e7/Cscr-featured.svg/30px-Cscr-featured.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/e/e7/Cscr-featured.svg/40px-Cscr-featured.svg.png 2x" data-file-width="466" data-file-height="443" /></a></div></div> <div id="mw-indicator-pp-default" class="mw-indicator"><div class="mw-parser-output"><a href="/wiki/Wikipedia:Protection_policy#semi" title="This article is semi-protected due to vandalism"><img alt="Page semi-protected" src="//upload.wikimedia.org/wikipedia/en/thumb/1/1b/Semi-protection-shackle.svg/20px-Semi-protection-shackle.svg.png" decoding="async" width="20" height="20" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/1/1b/Semi-protection-shackle.svg/30px-Semi-protection-shackle.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/1/1b/Semi-protection-shackle.svg/40px-Semi-protection-shackle.svg.png 2x" data-file-width="512" data-file-height="512" /></a></div></div> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Species of mammal</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">For other uses, see <a href="/wiki/Platypus_(disambiguation)" class="mw-disambig" title="Platypus (disambiguation)">Platypus (disambiguation)</a>.</div> <table class="infobox biota" style="text-align: left; width: 200px; font-size: 100%"> <tbody><tr> <th colspan="2" style="color:inherit; text-align: center; background-color: rgb(235,235,210)">Platypus <div style="font-size: 85%;">Temporal range: <a href="/wiki/Pliocene" title="Pliocene">Pliocene</a>–<a href="/wiki/Recent" class="mw-redirect" title="Recent">Recent</a> <div id="Timeline-row" style="margin: 4px auto 0; clear:both; width:220px; padding:0px; height:18px; overflow:visible; white-space:nowrap; border:1px #666; border-style:solid none; position:relative; z-index:0; font-size:97%;"> <div style="position:absolute; height:100%; left:0px; width:207.23076923077px; padding-left:5px; text-align:left; background-color:rgb(254,217,106); background-image: linear-gradient(to right, rgba(255,255,255,1), rgba(254,217,106,1) 15%, rgba(254,217,106,1));"><a href="/wiki/Precambrian" title="Precambrian">PreꞒ</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(127,160,86); left:37.636923076923px; width:18.073846153846px;"><a href="/wiki/Cambrian" title="Cambrian">Ꞓ</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(0,146,112); left:55.710769230769px; width:14.08px;"><a href="/wiki/Ordovician" title="Ordovician">O</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(179,225,182); left:69.790769230769px; width:8.3261538461539px;"><a href="/wiki/Silurian" title="Silurian">S</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(203,140,55); left:78.116923076923px; width:20.409230769231px;"><a href="/wiki/Devonian" title="Devonian">D</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(103,165,153); left:98.526153846154px; width:20.307692307692px;"><a href="/wiki/Carboniferous" title="Carboniferous">C</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(240,64,40); left:118.83384615385px; width:15.907015384615px;"><a href="/wiki/Permian" title="Permian">P</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(129,43,146); left:134.74086153846px; width:17.092984615385px;"><a href="/wiki/Triassic" title="Triassic">T</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(52,178,201); left:151.83384615385px; width:19.089230769231px;"><a href="/wiki/Jurassic" title="Jurassic">J</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(127,198,78); left:170.92307692308px; width:26.738461538462px;"><a href="/wiki/Cretaceous" title="Cretaceous">K</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(253,154,82); left:197.66153846154px; width:14.543692307692px;"><a href="/wiki/Paleogene" title="Paleogene">Pg</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(255,230,25); left:212.20523076923px; width:6.9215384615385px;"><a href="/wiki/Neogene" title="Neogene">N</a></div> <div id="end-border" style="position:absolute; height:100%; background-color:#666; width:1px; left:219px"></div><div style="margin:0 auto; line-height:0; clear:both; width:220px; padding:0px; height:8px; overflow:visible; background-color:transparent; position:relative; top:-4px; z-index:100;"><div style="position:absolute; height:8px; left:218.19498461538px; width:1.8050153846154px; background-color:#360; opacity:0.42;"></div> <div style="position:absolute; height:8px; left:218.19498461538px; width:1.8050153846154px; background-color:#360; opacity:1;"></div> <div style="position:absolute; height:6px; top:1px; left:219.19498461538px; width:-0.19498461538462px; background-color:#6c3;"></div> </div> </div></div> </th></tr> <tr> <td colspan="2" style="text-align: center"><a href="/wiki/File:Duck-billed_platypus_(Ornithorhynchus_anatinus)_Scottsdale.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_Scottsdale.jpg/220px-Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_Scottsdale.jpg" decoding="async" width="220" height="147" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_Scottsdale.jpg/330px-Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_Scottsdale.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_Scottsdale.jpg/440px-Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_Scottsdale.jpg 2x" data-file-width="5022" data-file-height="3348" /></a> </td></tr> <tr> <td colspan="2" style="text-align: center; font-size: 88%">Platypus swimming in waters near <a href="/wiki/Scottsdale,_Tasmania" title="Scottsdale, Tasmania">Scottsdale, Tasmania</a> </td></tr> <tr style="color:inherit; text-align: center; background-color: rgb(235,235,210)"> <th colspan="2"><div style="text-align: center"><a href="/wiki/Conservation_status" title="Conservation status">Conservation status</a></div> </th></tr> <tr> <td colspan="2"><div style="text-align: center"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5b/Status_iucn3.1_NT.svg/220px-Status_iucn3.1_NT.svg.png" decoding="async" width="220" height="59" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5b/Status_iucn3.1_NT.svg/330px-Status_iucn3.1_NT.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5b/Status_iucn3.1_NT.svg/440px-Status_iucn3.1_NT.svg.png 2x" data-file-width="512" data-file-height="137" /> <a href="/wiki/Near_Threatened" class="mw-redirect" title="Near Threatened">Near Threatened</a>  (<a href="/wiki/IUCN_Red_List" title="IUCN Red List">IUCN 3.1</a>)<a href="#cite_note-iucn-1">[1]</a></div> </td></tr> <tr> <th colspan="2" style="color:inherit; min-width:15em; text-align: center; background-color: rgb(235,235,210)"><a href="/wiki/Taxonomy_(biology)" title="Taxonomy (biology)">Scientific classification</a> <a href="/wiki/Template:Taxonomy/Ornithorhynchus" title="Edit this classification"><img alt="Edit this classification" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr.svg/15px-OOjs_UI_icon_edit-ltr.svg.png" decoding="async" width="15" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr.svg/23px-OOjs_UI_icon_edit-ltr.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr.svg/30px-OOjs_UI_icon_edit-ltr.svg.png 2x" data-file-width="20" data-file-height="20" /></a> </th></tr> <tr> <td>Domain: </td> <td><a href="/wiki/Eukaryote" title="Eukaryote">Eukaryota</a> </td></tr> <tr> <td>Kingdom: </td> <td><a href="/wiki/Animal" title="Animal">Animalia</a> </td></tr> <tr> <td>Phylum: </td> <td><a href="/wiki/Chordate" title="Chordate">Chordata</a> </td></tr> <tr> <td>Class: </td> <td><a href="/wiki/Mammal" title="Mammal">Mammalia</a> </td></tr> <tr> <td>Order: </td> <td><a href="/wiki/Monotreme" title="Monotreme">Monotremata</a> </td></tr> <tr> <td>Family: </td> <td><a href="/wiki/Ornithorhynchidae" title="Ornithorhynchidae">Ornithorhynchidae</a> </td></tr> <tr> <td>Genus: </td> <td><a class="mw-selflink selflink">Ornithorhynchus</a> <a href="/wiki/Johann_Friedrich_Blumenbach" title="Johann Friedrich Blumenbach">Blumenbach</a>, 1800 </td></tr> <tr> <td>Species: </td> <td><div style="display:inline" class="species">O. anatinus</div> </td></tr> <tr> <th colspan="2" style="color:inherit; text-align: center; background-color: rgb(235,235,210)"><a href="/wiki/Binomial_nomenclature" title="Binomial nomenclature">Binomial name</a> </th></tr> <tr> <td colspan="2" style="text-align: center">Ornithorhynchus anatinus <div style="font-size: 85%;">(<a href="/wiki/George_Shaw_(biologist)" title="George Shaw (biologist)">Shaw</a>, 1799)</div> </td></tr> <tr> <td colspan="2" style="text-align: center"><a href="/wiki/File:Distribution_of_the_Platypus_(Ornithorhynchus_anatinus).png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/05/Distribution_of_the_Platypus_%28Ornithorhynchus_anatinus%29.png/220px-Distribution_of_the_Platypus_%28Ornithorhynchus_anatinus%29.png" decoding="async" width="220" height="205" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/05/Distribution_of_the_Platypus_%28Ornithorhynchus_anatinus%29.png/330px-Distribution_of_the_Platypus_%28Ornithorhynchus_anatinus%29.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/05/Distribution_of_the_Platypus_%28Ornithorhynchus_anatinus%29.png/440px-Distribution_of_the_Platypus_%28Ornithorhynchus_anatinus%29.png 2x" data-file-width="1691" data-file-height="1575" /></a> </td></tr> <tr> <td colspan="2" style="text-align: center; font-size: 88%">Platypus range (red – native, yellow – introduced) </td></tr> <tr> <th colspan="2" style="color:inherit; text-align: center; background-color: rgb(235,235,210)"><a href="/wiki/Synonym_(taxonomy)" title="Synonym (taxonomy)">Synonyms</a><a href="#cite_note-2">[2]</a><a href="#cite_note-3">[3]</a> </th></tr> <tr> <td colspan="2" style="text-align: left"> <ul class="taxonlist"><li>Platypus anatinus Shaw, 1799 </li><li>Ornithorhynchus paradoxus Blumenbach, 1800 </li><li>O. novaehollandiae <a href="/wiki/Bernard_Germain_de_Lac%C3%A9p%C3%A8de" title="Bernard Germain de Lacépède">Lacépède</a>, 1800 </li><li>O. fuscus <a href="/wiki/Fran%C3%A7ois_P%C3%A9ron" title="François Péron">Péron</a>, 1807 </li><li>O. rufus Péron, 1807 </li><li>O. paradoxi <a href="/wiki/Johann_Friedrich_Meckel" title="Johann Friedrich Meckel">Meckel</a>, 1826 </li><li>O. crispus <a href="/wiki/William_MacGillivray" title="William MacGillivray">MacGillivray</a>, 1827 </li><li>O. laevis MacGillivray, 1827 </li><li>O. brevirostris <a href="/wiki/William_Ogilby" title="William Ogilby">Ogilby</a>, 1832 </li><li>O. agilis <a href="/wiki/Charles_Walter_De_Vis" title="Charles Walter De Vis">de Vis</a>, 1886 </li><li>O. phoxinus <a href="/wiki/Oldfield_Thomas" title="Oldfield Thomas">O. Thomas</a>, 1923 </li><li>O. triton O. Thomas, 1923 </li></ul> </td></tr> </tbody></table><style data-mw-deduplicate="TemplateStyles:r1238732961">@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox.biota tr{background:transparent!important}html.skin-theme-clientpref-night .mw-parser-output .infobox.biota img{background:transparent}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox.biota tr{background:transparent!important}html.skin-theme-clientpref-os .mw-parser-output .infobox.biota img{background:white}}.mw-parser-output .infobox.biota .taxobox-edit-taxonomy img{background:transparent!important}body.skin-vector .mw-parser-output table.biota.infobox{margin-top:0.5em}body.skin--responsive .mw-parser-output table.biota.infobox tr.taxonrow td{padding:2px 10px}</style> The platypus (Ornithorhynchus anatinus),<a href="#cite_note-MSW3-4">[4]</a> sometimes referred to as the duck-billed platypus,<a href="#cite_note-Shaw-1799-5">[5]</a> is a <a href="/wiki/Semiaquatic" title="Semiaquatic">semiaquatic</a>, egg-laying <a href="/wiki/Mammal" title="Mammal">mammal</a> endemic to <a href="/wiki/Eastern_states_of_Australia" title="Eastern states of Australia">eastern Australia</a>, including <a href="/wiki/Tasmania" title="Tasmania">Tasmania</a>. The platypus is the sole living representative or <a href="/wiki/Monotypic_taxon" title="Monotypic taxon">monotypic taxon</a> of its <a href="/wiki/Family_(biology)" title="Family (biology)">family</a> <a href="/wiki/Ornithorhynchidae" title="Ornithorhynchidae">Ornithorhynchidae</a> and <a href="/wiki/Genus" title="Genus">genus</a> Ornithorhynchus, though a number of <a href="/wiki/Fossil_Monotremes" class="mw-redirect" title="Fossil Monotremes">related species</a> appear in the fossil record. Together with the four species of <a href="/wiki/Echidna" title="Echidna">echidna</a>, it is one of the five <a href="https://en.wiktionary.org/wiki/extant" class="extiw" title="wikt:extant">extant</a> species of <a href="/wiki/Monotreme" title="Monotreme">monotremes</a>, mammals that lay <a href="/wiki/Egg_(biology)" class="mw-redirect" title="Egg (biology)">eggs</a> instead of giving birth to live young.<a href="#cite_note-6">[6]</a> Like other monotremes, the platypus has a sense of <a href="/wiki/Electroreception" class="mw-redirect" title="Electroreception">electrolocation</a>, which it uses to detect prey in cloudy water.<a href="#cite_note-7">[7]</a> It is one of the few species of <a href="/wiki/Venomous_mammals" class="mw-redirect" title="Venomous mammals">venomous mammals</a>, as the male platypus has a <a href="/wiki/Spur_(zoology)" title="Spur (zoology)">spur</a> on the hind foot that delivers an extremely painful <a href="/wiki/Platypus_venom" title="Platypus venom">venom</a>. The unusual appearance of this egg-laying, <a href="/wiki/Duck" title="Duck">duck</a>-billed, <a href="/wiki/Beaver" title="Beaver">beaver</a>-tailed, <a href="/wiki/Otter" title="Otter">otter</a>-footed mammal at first baffled European naturalists. In 1799, the first scientists to examine a preserved platypus body judged it a fake made of several animals sewn together. The unique features of the platypus make it important in the study of <a href="/wiki/Evolutionary_biology" title="Evolutionary biology">evolutionary biology</a>, and a recognisable and iconic symbol of <a href="/wiki/Australia" title="Australia">Australia</a>. It is culturally significant to several <a href="/wiki/Aboriginal_Australians" title="Aboriginal Australians">Aboriginal peoples</a>, who also used to hunt it for food. It has appeared as a national mascot, features on the <a href="/wiki/Obverse_and_reverse" title="Obverse and reverse">reverse</a> of the <a href="/wiki/Australian_twenty-cent_coin" title="Australian twenty-cent coin">Australian twenty-cent coin</a>, and is an emblem of the state of <a href="/wiki/New_South_Wales" title="New South Wales">New South Wales</a>. The platypus was hunted for its fur, but it has been a legally <a href="/wiki/Protected_species" class="mw-redirect" title="Protected species">protected species</a> in all states where it occurs since 1912.<a href="#cite_note-unsw-8">[8]</a> Its population is not under severe threat, although <a href="/wiki/Captive_breeding" title="Captive breeding">captive-breeding</a> programs have had slight success, and it is vulnerable to pollution. It is classified as a <a href="/wiki/Near-threatened_species" title="Near-threatened species">near-threatened species</a> by the <a href="/wiki/IUCN" class="mw-redirect" title="IUCN">IUCN</a>, but a November 2020 report has recommended that it be upgraded to <a href="/wiki/Threatened_species" title="Threatened species">threatened species</a> under the federal <a href="/wiki/EPBC_Act" class="mw-redirect" title="EPBC Act">EPBC Act</a>, due to <a href="/wiki/Habitat_destruction" title="Habitat destruction">habitat destruction</a> and declining numbers in all states.<a href="#cite_note-2020report-9">[9]</a> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Taxonomy_and_naming">Taxonomy and naming</h2></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Plural_form_of_words_ending_in_-us" title="Plural form of words ending in -us">Plural form of words ending in -us</a></div> <a href="/wiki/Australian_Aboriginal_people" class="mw-redirect" title="Australian Aboriginal people">Australian Aboriginal people</a> name or have named the platypus in various ways depending on <a href="/wiki/Australian_Aboriginal_languages" title="Australian Aboriginal languages">Australian indigenous languages and dialects</a>. Among the names found: boondaburra, mallingong, tambreet, watjarang<a href="#cite_note-10">[10]</a> (names in <a href="/wiki/Yass,_New_South_Wales" title="Yass, New South Wales">Yass</a>, <a href="/wiki/Murrumbidgee_Shire" title="Murrumbidgee Shire">Murrumbidgee</a>, and <a href="/wiki/Tumut" title="Tumut">Tumut</a>),<a href="#cite_note-:2-11">[11]</a> tohunbuck (region of <a href="/wiki/Goomburra" class="mw-redirect" title="Goomburra">Goomburra</a>, <a href="/wiki/Darling_Downs" title="Darling Downs">Darling Downs</a>),<a href="#cite_note-:2-11">[11]</a> dulaiwarrung<a href="#cite_note-12">[12]</a> ou dulai warrung (<a href="/wiki/Woiwurrung%E2%80%93Taungurung_language" title="Woiwurrung–Taungurung language">Woiwurrung</a> language, <a href="/wiki/Wurundjeri" title="Wurundjeri">Wurundjeri</a>, <a href="/wiki/Victoria_(State)" class="mw-redirect" title="Victoria (State)">Victoria</a>),<a href="#cite_note-:1-13">[13]</a> djanbang (<a href="/wiki/Yugambeh%E2%80%93Bundjalung_languages" title="Yugambeh–Bundjalung languages">Bundjalung</a>, <a href="/wiki/Queensland" title="Queensland">Queensland</a>),<a href="#cite_note-14">[14]</a> djumulung (<a href="/wiki/Yuin%E2%80%93Kuric_languages" title="Yuin–Kuric languages">Yuin</a> language, <a href="/wiki/Yuin" title="Yuin">Yuin</a>, <a href="/wiki/New_South_Wales" title="New South Wales">New South Wales</a>),<a href="#cite_note-15">[15]</a> maluŋgaŋ (ngunnawal language, <a href="/wiki/Ngunnawal" title="Ngunnawal">Ngunnawal</a>, <a href="/wiki/Australian_Capital_Territory" title="Australian Capital Territory">Australian Capital Territory</a><a href="#cite_note-16">[16]</a>), biladurang, wamul, dyiimalung, oornie, dungidany (<a href="/wiki/Wiradjuri_language" title="Wiradjuri language">Wiradjuri</a> language, <a href="/wiki/Wiradjuri" title="Wiradjuri">Wiradjuri</a>, <a href="/wiki/Victoria_(State)" class="mw-redirect" title="Victoria (State)">Vic</a>, <a href="/wiki/New_South_Wales" title="New South Wales">NSW</a>),<a href="#cite_note-:1-13">[13]</a> oonah,<a href="#cite_note-17">[17]</a> etc. The name chosen and approved in <a href="/wiki/Palawa_kani" title="Palawa kani">Palawa kani</a> (reconstructed <a href="/wiki/Tasmanian_languages" title="Tasmanian languages">tasmanian</a> language) is larila.<a href="#cite_note-18">[18]</a> When the platypus was first encountered by Europeans in 1798, a <a href="/wiki/Pelage" class="mw-redirect" title="Pelage">pelt</a> and sketch were sent back to <a href="/wiki/Kingdom_of_Great_Britain" title="Kingdom of Great Britain">Great Britain</a> by <a href="/wiki/John_Hunter_(Royal_Navy_officer)" title="John Hunter (Royal Navy officer)">Captain John Hunter</a>, the second Governor of <a href="/wiki/New_South_Wales" title="New South Wales">New South Wales</a>.<a href="#cite_note-Paradox-19">[19]</a> British scientists' initial hunch was that the attributes were a hoax.<a href="#cite_note-hoax-20">[20]</a> <a href="/wiki/George_Shaw_(biologist)" title="George Shaw (biologist)">George Shaw</a>, who produced the first description of the animal in the Naturalist's Miscellany in 1799, stated it was impossible not to entertain doubts as to its genuine nature,<a href="#cite_note-Shaw-1799-5">[5]</a> and <a href="/wiki/Robert_Knox_(surgeon)" title="Robert Knox (surgeon)">Robert Knox</a> believed it might have been produced by some Asian <a href="/wiki/Taxidermy" title="Taxidermy">taxidermist</a>.<a href="#cite_note-hoax-20">[20]</a> It was thought that somebody had sewn a duck's beak onto the body of a beaver-like animal. Shaw even took a pair of scissors to the dried skin to check for stitches.<a href="#cite_note-APC-21">[21]</a><a href="#cite_note-Shaw-1799-5">[5]</a> The common name "platypus" literally means 'flat-foot', deriving from the <a href="/wiki/Ancient_Greek" title="Ancient Greek">Greek</a> word platúpous (<a href="https://en.wiktionary.org/wiki/%CF%80%CE%BB%CE%B1%CF%84%CF%8D%CF%80%CE%BF%CF%85%CF%82#Ancient_Greek" class="extiw" title="wikt:πλατύπους">πλατύπους</a>),<a href="#cite_note-22">[22]</a> from platús (<a href="https://en.wiktionary.org/wiki/%CF%80%CE%BB%CE%B1%CF%84%CF%8D%CF%82#Ancient_Greek" class="extiw" title="wikt:πλατύς">πλατύς</a> 'broad, wide, flat')<a href="#cite_note-23">[23]</a><a href="#cite_note-24">[a]</a> and poús (<a href="https://en.wiktionary.org/wiki/%CF%80%CE%BF%CF%8D%CF%82#Ancient_Greek" class="extiw" title="wikt:πούς">πούς</a> 'foot').<a href="#cite_note-25">[24]</a><a href="#cite_note-26">[25]</a> Shaw initially assigned the species the <a href="/wiki/Linnaean_taxonomy" title="Linnaean taxonomy">Linnaean</a> name Platypus anatinus when he described it,<a href="#cite_note-Shaw-1799-5">[5]</a> but the genus term was quickly discovered to already be in use as the name of the wood-boring <a href="/wiki/Ambrosia_beetle" title="Ambrosia beetle">ambrosia beetle</a> genus <a href="/wiki/Platypus_(beetle)" title="Platypus (beetle)">Platypus</a>.<a href="#cite_note-ABRS-27">[26]</a> It was independently described as Ornithorhynchus paradoxus by <a href="/wiki/Johann_Blumenbach" class="mw-redirect" title="Johann Blumenbach">Johann Blumenbach</a> in 1800 (from a specimen given to him by <a href="/wiki/Sir_Joseph_Banks" class="mw-redirect" title="Sir Joseph Banks">Sir Joseph Banks</a>)<a href="#cite_note-NLA-28">[27]</a> and following the <a href="/wiki/Principle_of_priority" class="mw-redirect" title="Principle of priority">rules of priority</a> of nomenclature, it was later officially recognised as Ornithorhynchus anatinus.<a href="#cite_note-ABRS-27">[26]</a> There is no universally agreed plural form of "platypus" in the English language. Scientists generally use "platypuses" or simply "platypus". Alternatively, the term "platypi" is also used for the plural, although this is a form of <a href="/wiki/Dog_Latin" title="Dog Latin">pseudo-Latin</a>;<a href="#cite_note-APC-21">[21]</a> going by the word's Greek roots the plural would be "platypodes". Early <a href="/wiki/United_Kingdom" title="United Kingdom">British</a> <a href="/wiki/Settler" title="Settler">settlers</a> called it by many names, such as "watermole", "duckbill", and "duckmole".<a href="#cite_note-APC-21">[21]</a> Occasionally it is specifically called the "duck-billed platypus". The scientific name Ornithorhynchus anatinus literally means 'duck-like bird-snout',<a href="#cite_note-Shaw-1799-5">[5]</a> deriving its <a href="/wiki/Generic_epithet" class="mw-redirect" title="Generic epithet">genus name</a> from the Greek root ornith- (<a href="https://en.wiktionary.org/wiki/%E1%BD%84%CF%81%CE%BD%CE%B9%CF%82#Ancient_Greek" class="extiw" title="wikt:ὄρνις">όρνιθ</a> ornith or ὄρνις órnīs 'bird')<a href="#cite_note-29">[28]</a> and the word rhúnkhos (<a href="https://en.wiktionary.org/wiki/%E1%BF%A5%CF%8D%CE%B3%CF%87%CE%BF%CF%82#Ancient_Greek" class="extiw" title="wikt:ῥύγχος">ῥύγχος</a> 'snout', 'beak').<a href="#cite_note-30">[29]</a> Its <a href="/wiki/Specific_epithet" class="mw-redirect" title="Specific epithet">species name</a> is derived from Latin <a href="https://en.wiktionary.org/wiki/anatinus#Latin" class="extiw" title="wikt:anatinus">anatinus</a> ('duck-like') from <a href="https://en.wiktionary.org/wiki/anas#Latin" class="extiw" title="wikt:anas">anas</a> 'duck'.<a href="#cite_note-Shaw-1799-5">[5]</a><a href="#cite_note-31">[30]</a> The platypus is the sole living representative or monotypic taxon of its <a href="/wiki/Family_(biology)" title="Family (biology)">family</a> (Ornithorhynchidae).<a href="#cite_note-32">[31]</a> <ul class="gallery mw-gallery-packed"> <li class="gallerybox" style="width: 136px"> <div class="thumb" style="width: 134px;"><a href="/wiki/File:Platypus-plate.jpg" class="mw-file-description" title="A book for children published in Germany in 1798"><img alt="A book for children published in Germany in 1798" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4f/Platypus-plate.jpg/201px-Platypus-plate.jpg" decoding="async" width="134" height="180" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4f/Platypus-plate.jpg/301px-Platypus-plate.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/4/4f/Platypus-plate.jpg 2x" data-file-width="350" data-file-height="471" /></a></div> <div class="gallerytext">A book for children published in Germany in 1798</div> </li> <li class="gallerybox" style="width: 360px"> <div class="thumb" style="width: 358px;"><a href="/wiki/File:Platypus_(Ornithorhynchus_anatinus)._First_Description_1799.jpg" class="mw-file-description" title="Illustration from the first scientific description in 1799"><img alt="Illustration from the first scientific description in 1799" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/61/Platypus_%28Ornithorhynchus_anatinus%29._First_Description_1799.jpg/537px-Platypus_%28Ornithorhynchus_anatinus%29._First_Description_1799.jpg" decoding="async" width="358" height="180" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/61/Platypus_%28Ornithorhynchus_anatinus%29._First_Description_1799.jpg/805px-Platypus_%28Ornithorhynchus_anatinus%29._First_Description_1799.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/61/Platypus_%28Ornithorhynchus_anatinus%29._First_Description_1799.jpg/1074px-Platypus_%28Ornithorhynchus_anatinus%29._First_Description_1799.jpg 2x" data-file-width="2256" data-file-height="1135" /></a></div> <div class="gallerytext">Illustration from the first scientific description in 1799</div> </li> <li class="gallerybox" style="width: 280px"> <div class="thumb" style="width: 278px;"><a href="/wiki/File:Platypus-sketch.jpg" class="mw-file-description" title="Colour print from 1863"><img alt="Colour print from 1863" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7e/Platypus-sketch.jpg/417px-Platypus-sketch.jpg" decoding="async" width="278" height="180" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7e/Platypus-sketch.jpg/626px-Platypus-sketch.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7e/Platypus-sketch.jpg/834px-Platypus-sketch.jpg 2x" data-file-width="5858" data-file-height="3792" /></a></div> <div class="gallerytext">Colour print from 1863</div> </li> </ul> <div class="mw-heading mw-heading2"><h2 id="Description">Description</h2></div> In <a href="/wiki/David_Collins_(lieutenant_governor)" title="David Collins (lieutenant governor)">David Collins</a>'s account of the new colony 1788–1801, he describes "an amphibious animal, of the mole species", with a drawing.<a href="#cite_note-33">[32]</a> The body and the broad, flat tail of the platypus are covered with dense, brown, biofluorescent <a href="/wiki/Fur" title="Fur">fur</a> that traps a layer of insulating air to keep the animal warm.<a href="#cite_note-APC-21">[21]</a><a href="#cite_note-ABRS-27">[26]</a><a href="#cite_note-34">[33]</a> The fur is waterproof, and textured like that of a <a href="/wiki/Mole_(animal)" title="Mole (animal)">mole</a>.<a href="#cite_note-35">[34]</a> The platypus's tail stores fat reserves, an adaptation also found in the <a href="/wiki/Tasmanian_devil" title="Tasmanian devil">Tasmanian devil</a>.<a href="#cite_note-Guiler-36">[35]</a> <a href="/wiki/Webbed_foot" title="Webbed foot">Webbing</a> is more significant on the front feet, which in land walking are folded up in <a href="/wiki/Knuckle-walking" title="Knuckle-walking">knuckle-walking</a> to protect the webbing.<a href="#cite_note-Fish-37">[36]</a> The elongated snout and lower jaw are covered in soft skin, forming the bill. The nostrils are located on the snout's dorsal surface, while the eyes and ears are just behind the snout in a groove which closes underwater.<a href="#cite_note-ABRS-27">[26]</a> Platypuses can give a low growl when disturbed, and a range of vocalisations have been reported in captivity.<a href="#cite_note-APC-21">[21]</a> Size varies considerably in different regions, with average weight from 0.7 to 2.4 kg (1 lb 9 oz to 5 lb 5 oz); males have average length 50 cm (20 in), while females are the smaller at 43 cm (17 in).<a href="#cite_note-ABRS-27">[26]</a> This variation does not seem to follow any particular climatic rule and may be due to other factors such as predation and human encroachment.<a href="#cite_note-Workshop-38">[37]</a> The platypus has an average <a href="/wiki/Core_temperature" class="mw-redirect" title="Core temperature">body temperature</a> of about 32 °C (90 °F), lower than the 37 °C (99 °F) typical of <a href="/wiki/Placentalia" title="Placentalia">placental mammals</a>.<a href="#cite_note-DC-39">[38]</a> Research suggests this has been a gradual adaptation to harsh environmental conditions among the few marginal surviving monotreme species, rather than a general characteristic of past monotremes.<a href="#cite_note-temp-40">[39]</a><a href="#cite_note-temp2-41">[40]</a> In addition to laying eggs, the anatomy, <a href="/wiki/Ontogeny" title="Ontogeny">ontogeny</a>, and genetics of monotremes shows traces of similarity to reptiles and birds. The platypus has a <a href="/wiki/Reptile" title="Reptile">reptilian</a> gait with legs on the sides of the body, rather than underneath.<a href="#cite_note-ABRS-27">[26]</a> The platypus's genes are a possible evolutionary link between the mammalian <a href="/wiki/XY_sex-determination_system" title="XY sex-determination system">XY</a> and bird/reptile <a href="/wiki/ZW_sex-determination_system" title="ZW sex-determination system">ZW</a> sex-determination systems, as one of the platypus's five X chromosomes contains the <a href="/wiki/DMRT1" title="DMRT1">DMRT1</a> gene, which birds possess on their Z chromosome.<a href="#cite_note-Graves-42">[41]</a> As in all true mammals, the tiny bones that conduct sound in the <a href="/wiki/Middle_ear" title="Middle ear">middle ear</a> are fully incorporated into the skull, rather than lying in the jaw as in pre-mammalian <a href="/wiki/Synapsid" class="mw-redirect" title="Synapsid">synapsids</a>. However, the external opening of the ear still lies at the base of the jaw.<a href="#cite_note-ABRS-27">[26]</a> The platypus has extra bones in the shoulder girdle, including an <a href="/wiki/Interclavicle" title="Interclavicle">interclavicle</a> not found in other mammals.<a href="#cite_note-ABRS-27">[26]</a> As in many other aquatic and semiaquatic <a href="/wiki/Vertebrates" class="mw-redirect" title="Vertebrates">vertebrates</a>, the bones show <a href="/wiki/Osteosclerosis" title="Osteosclerosis">osteosclerosis</a>, increasing their density to provide ballast.<a href="#cite_note-43">[42]</a> The platypus <a href="/wiki/Jaw" title="Jaw">jaw</a> is constructed differently from that of other mammals, and the jaw-opening muscle is different.<a href="#cite_note-ABRS-27">[26]</a> Modern platypus young have three teeth in each of the <a href="/wiki/Maxilla" title="Maxilla">maxillae</a> (one premolar and two <a href="/wiki/Molar_(tooth)" title="Molar (tooth)">molars</a>) and <a href="/wiki/Mandible" title="Mandible">dentaries</a> (three molars), which they lose before or just after leaving the breeding burrow;<a href="#cite_note-ABRS-27">[26]</a> adults instead develop heavily <a href="/wiki/Keratinisation" class="mw-redirect" title="Keratinisation">keratinised</a> food-grinding pads called <a href="/wiki/Ceratodontes" title="Ceratodontes">ceratodontes</a>.<a href="#cite_note-ABRS-27">[26]</a><a href="#cite_note-Piper-2007-44">[43]</a><a href="#cite_note-Haeckel1895-45">[44]</a> The first upper and third lower cheek teeth of platypus nestlings are small, each having one principal cusp, while the other teeth have two main cusps.<a href="#cite_note-46">[45]</a> <ul class="gallery mw-gallery-packed"> <li class="gallerybox" style="width: 182px"> <div class="thumb" style="width: 180px;"><a href="/wiki/File:Duck-billed_platypus_(Ornithorhynchus_anatinus)_diving_Scottsdale.jpg" class="mw-file-description" title="Diving"><img alt="Diving" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b4/Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_diving_Scottsdale.jpg/270px-Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_diving_Scottsdale.jpg" decoding="async" width="180" height="180" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b4/Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_diving_Scottsdale.jpg/405px-Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_diving_Scottsdale.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b4/Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_diving_Scottsdale.jpg/540px-Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_diving_Scottsdale.jpg 2x" data-file-width="4000" data-file-height="4000" /></a></div> <div class="gallerytext">Diving</div> </li> <li class="gallerybox" style="width: 182px"> <div class="thumb" style="width: 180px;"><a href="/wiki/File:Duck-billed_platypus_(Ornithorhynchus_anatinus)_surfacing_Scottsdale.jpg" class="mw-file-description" title="Surfacing"><img alt="Surfacing" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/93/Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_surfacing_Scottsdale.jpg/270px-Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_surfacing_Scottsdale.jpg" decoding="async" width="180" height="180" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/93/Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_surfacing_Scottsdale.jpg/405px-Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_surfacing_Scottsdale.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/93/Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_surfacing_Scottsdale.jpg/540px-Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_surfacing_Scottsdale.jpg 2x" data-file-width="3165" data-file-height="3165" /></a></div> <div class="gallerytext">Surfacing</div> </li> <li class="gallerybox" style="width: 272px"> <div class="thumb" style="width: 270px;"><a href="/wiki/File:Duck-billed_platypus_(Ornithorhynchus_anatinus)_Scottsdale_4.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b3/Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_Scottsdale_4.jpg/405px-Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_Scottsdale_4.jpg" decoding="async" width="270" height="180" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b3/Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_Scottsdale_4.jpg/608px-Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_Scottsdale_4.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b3/Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_Scottsdale_4.jpg/810px-Duck-billed_platypus_%28Ornithorhynchus_anatinus%29_Scottsdale_4.jpg 2x" data-file-width="3447" data-file-height="2298" /></a></div> <div class="gallerytext"></div> </li> </ul> <div class="mw-heading mw-heading3"><h3 id="Venom">Venom</h3></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Platypus_venom" title="Platypus venom">Platypus venom</a></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Platypus_spur.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3d/Platypus_spur.JPG/220px-Platypus_spur.JPG" decoding="async" width="220" height="156" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3d/Platypus_spur.JPG/330px-Platypus_spur.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/3/3d/Platypus_spur.JPG 2x" data-file-width="340" data-file-height="241" /></a><figcaption>The calcaneus spur on the male's hind limb is used to inject venom.</figcaption></figure> While both male and female platypuses are born with back ankle spurs, only the males' deliver venom.<a href="#cite_note-47">[46]</a><a href="#cite_note-48">[47]</a><a href="#cite_note-49">[48]</a> It is powerful enough to kill smaller animals such as dogs, and though it is not lethal to humans, it can inflict weeks of agony.<a href="#cite_note-PS-50">[49]</a><a href="#cite_note-51">[50]</a> <a href="/wiki/Edema" title="Edema">Edema</a> rapidly develops around the wound and gradually spreads through the affected limb, and it may develop into an excruciating <a href="/wiki/Hyperalgesia" title="Hyperalgesia">hyperalgesia</a> (heightened sensitivity to pain) persisting for days or even months.<a href="#cite_note-JN-52">[51]</a><a href="#cite_note-venom-53">[52]</a> The venom is composed largely of <a href="/wiki/Defensin" title="Defensin">defensin</a>-like <a href="/wiki/Protein" title="Protein">proteins</a> (DLPs) produced by the immune system, three of which are unique to the platypus.<a href="#cite_note-PS-50">[49]</a> In other animals, defensins <a href="/wiki/Lysis" title="Lysis">kill</a> pathogenic bacteria and viruses, but in platypuses they are also collected into a venom against predators. Venom is produced in the <a href="https://en.wiktionary.org/wiki/crural" class="extiw" title="wikt:crural">crural</a> glands of the male, which are kidney-shaped <a href="/wiki/Alveolar_gland" title="Alveolar gland">alveolar glands</a> connected by a thin-walled duct to a <a href="/wiki/Calcaneus" title="Calcaneus">calcaneus</a> spur on each hind limb. The female platypus, in common with echidnas, has rudimentary spur buds that do not develop (dropping off before the end of their first year) and lack functional crural glands.<a href="#cite_note-ABRS-27">[26]</a> Venom production rises among males during the breeding season, and it may be used to assert dominance.<a href="#cite_note-PS-50">[49]</a> Similar spurs are found on many archaic mammal groups, indicating that this was an ancient general characteristic among mammals.<a href="#cite_note-54">[53]</a> <div class="mw-heading mw-heading3"><h3 id="Electrolocation">Electrolocation</h3></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Platypus_electrolocation.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Platypus_electrolocation.svg/440px-Platypus_electrolocation.svg.png" decoding="async" width="440" height="248" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Platypus_electrolocation.svg/660px-Platypus_electrolocation.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Platypus_electrolocation.svg/880px-Platypus_electrolocation.svg.png 2x" data-file-width="1280" data-file-height="720" /></a><figcaption>The platypus has secondarily acquired <a href="/wiki/Electroreception_and_electrogenesis" title="Electroreception and electrogenesis">electroreception</a>. Its receptors are arranged in stripes on its bill, giving it high sensitivity to the sides and below; it makes quick turns of its head as it swims to detect prey.<a href="#cite_note-Electro1-55">[54]</a></figcaption></figure> <a href="/wiki/Monotremes" class="mw-redirect" title="Monotremes">Monotremes</a> are the only mammals (apart from the <a href="/wiki/Guiana_dolphin" title="Guiana dolphin">Guiana dolphin</a>)<a href="#cite_note-56">[55]</a> known to have a sense of <a href="/wiki/Electroreception" class="mw-redirect" title="Electroreception">electroreception</a>, and the platypus's electroreception is the most sensitive of any monotreme.<a href="#cite_note-57">[56]</a><a href="#cite_note-Electro1-55">[54]</a> Feeding by neither sight nor smell,<a href="#cite_note-draft_genome-58">[57]</a> the platypus closes its eyes, ears, and nose when it dives.<a href="#cite_note-59">[58]</a> Digging in the bottom of streams with its bill, its electroreceptors detect tiny electric currents generated by the muscular contractions of its prey, enabling it to distinguish between animate and inanimate objects.<a href="#cite_note-Electro1-55">[54]</a> Experiments have shown the platypus will even react to an "artificial shrimp" if a small electric current is passed through it.<a href="#cite_note-Manning-60">[59]</a> The <a href="/wiki/Electroreceptor" class="mw-redirect" title="Electroreceptor">electroreceptors</a> are located in rostrocaudal rows in the skin of the bill, while <a href="/wiki/Mechanoreceptor" title="Mechanoreceptor">mechanoreceptors</a> for touch are uniformly distributed across the bill. The electrosensory area of the <a href="/wiki/Cerebral_cortex" title="Cerebral cortex">cerebral cortex</a> is in the tactile <a href="/wiki/Somatosensory" class="mw-redirect" title="Somatosensory">somatosensory</a> area, and some cortical cells receive input from both electroreceptors and mechanoreceptors, suggesting the platypus feels electric fields like touches. These receptors in the bill dominate the <a href="/wiki/Somatotopic_map" class="mw-redirect" title="Somatotopic map">somatotopic map</a> of the platypus brain, in the same way human hands dominate the <a href="/wiki/Cortical_homunculus" title="Cortical homunculus">Penfield homunculus map</a>.<a href="#cite_note-sensory_platypus-61">[60]</a><a href="#cite_note-Ancestors_Tale-62">[61]</a> The platypus can feel the direction of an electric source, perhaps by comparing differences in <a href="/wiki/Signal_strength" class="mw-redirect" title="Signal strength">signal strength</a> across the sheet of electroreceptors, enhanced by the characteristic side-to-side motion of the animal's head while hunting. It may also be able to determine the distance of moving prey from the time lag between their electrical and mechanical pressure pulses.<a href="#cite_note-Electro1-55">[54]</a> Monotreme electrolocation for hunting in murky waters may be tied to their tooth loss.<a href="#cite_note-Masakazu_Asahara_2016-63">[62]</a> The extinct <a href="/wiki/Obdurodon" title="Obdurodon">Obdurodon</a> was electroreceptive, but unlike the modern platypus it foraged pelagically (near the ocean surface).<a href="#cite_note-Masakazu_Asahara_2016-63">[62]</a> <div class="mw-heading mw-heading3"><h3 id="Eyes">Eyes</h3></div> In recent studies it has been suggested that the eyes of the platypus are more similar to those of <a href="/wiki/Pacific_hagfish" title="Pacific hagfish">Pacific hagfish</a> or Northern Hemisphere <a href="/wiki/Lamprey" title="Lamprey">lampreys</a> than to those of most tetrapods. The eyes also contain <a href="/wiki/Double_cone_(biology)" title="Double cone (biology)">double cones</a>, unlike most mammals.<a href="#cite_note-64">[63]</a> Although the platypus's eyes are small and not used under water, several features indicate that vision was important for its ancestors. The <a href="/wiki/Cornea" title="Cornea">corneal</a> surface and the adjacent surface of the lens is flat, while the posterior surface of the lens is steeply curved, similar to the eyes of other aquatic mammals such as otters and sea-lions. A <a href="/wiki/Temporal_bone" title="Temporal bone">temporal</a> (ear side) concentration of <a href="/wiki/Retinal_ganglion_cell" title="Retinal ganglion cell">retinal ganglion cells</a>, important for binocular vision, indicates a vestigial role in <a href="/wiki/Predation" title="Predation">predation</a>, though the actual visual acuity is insufficient for such activities. Limited acuity is matched by low <a href="/wiki/Cortical_magnification" title="Cortical magnification">cortical magnification</a>, a small <a href="/wiki/Lateral_geniculate_nucleus" title="Lateral geniculate nucleus">lateral geniculate nucleus</a>, and a large <a href="/wiki/Optic_tectum" class="mw-redirect" title="Optic tectum">optic tectum</a>, suggesting that the <a href="/wiki/Midbrain_tectum" class="mw-redirect" title="Midbrain tectum">visual midbrain</a> plays a more important role than the <a href="/wiki/Visual_cortex" title="Visual cortex">visual cortex</a>, as in some rodents. These features suggest that the platypus has adapted to an aquatic and nocturnal lifestyle, developing its electrosensory system at the cost of its visual system. This contrasts with the small number of electroreceptors in the <a href="/wiki/Short-beaked_echidna" title="Short-beaked echidna">short-beaked echidna</a>, which dwells in dry environments, while the <a href="/wiki/Long-beaked_echidna" title="Long-beaked echidna">long-beaked echidna</a>, which lives in moist environments, is intermediate between the other two monotremes.<a href="#cite_note-sensory_platypus-61">[60]</a> <div class="mw-heading mw-heading3"><h3 id="Biofluorescence">Biofluorescence</h3></div> In 2020, research revealed that platypus fur gives a bluish-green <a href="/wiki/Biofluorescent" class="mw-redirect" title="Biofluorescent">biofluorescent</a> glow in <a href="/wiki/Blacklight" title="Blacklight">black light</a>.<a href="#cite_note-65">[64]</a> <div class="mw-heading mw-heading2"><h2 id="Distribution,_ecology,_and_behaviour">Distribution, ecology, and behaviour</h2></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Animaldentition_ornithoryncusanatinus.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/61/Animaldentition_ornithoryncusanatinus.png/220px-Animaldentition_ornithoryncusanatinus.png" decoding="async" width="220" height="210" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/61/Animaldentition_ornithoryncusanatinus.png/330px-Animaldentition_ornithoryncusanatinus.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/61/Animaldentition_ornithoryncusanatinus.png/440px-Animaldentition_ornithoryncusanatinus.png 2x" data-file-width="525" data-file-height="500" /></a><figcaption>Dentition, as illustrated in Knight's Sketches in Natural History</figcaption></figure> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><video id="mwe_player_0" poster="//upload.wikimedia.org/wikipedia/commons/thumb/d/db/Ornithorhynchus_anatinus_-Sydney_Aquarium%2C_Sydney%2C_Australia_-swimming-6a.ogv/220px-seek%3D50-Ornithorhynchus_anatinus_-Sydney_Aquarium%2C_Sydney%2C_Australia_-swimming-6a.ogv.jpg" controls="" preload="none" data-mw-tmh="" class="mw-file-element" width="220" height="165" data-durationhint="76" data-mwtitle="Ornithorhynchus_anatinus_-Sydney_Aquarium,_Sydney,_Australia_-swimming-6a.ogv" data-mwprovider="wikimediacommons" resource="/wiki/File:Ornithorhynchus_anatinus_-Sydney_Aquarium,_Sydney,_Australia_-swimming-6a.ogv"><source src="//upload.wikimedia.org/wikipedia/commons/d/db/Ornithorhynchus_anatinus_-Sydney_Aquarium%2C_Sydney%2C_Australia_-swimming-6a.ogv" type="video/ogg; codecs="theora, vorbis"" data-width="500" data-height="375" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/d/db/Ornithorhynchus_anatinus_-Sydney_Aquarium%2C_Sydney%2C_Australia_-swimming-6a.ogv/Ornithorhynchus_anatinus_-Sydney_Aquarium%2C_Sydney%2C_Australia_-swimming-6a.ogv.144p.mjpeg.mov" type="video/quicktime" data-transcodekey="144p.mjpeg.mov" data-width="192" data-height="144" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/d/db/Ornithorhynchus_anatinus_-Sydney_Aquarium%2C_Sydney%2C_Australia_-swimming-6a.ogv/Ornithorhynchus_anatinus_-Sydney_Aquarium%2C_Sydney%2C_Australia_-swimming-6a.ogv.240p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="240p.vp9.webm" data-width="320" data-height="240" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/d/db/Ornithorhynchus_anatinus_-Sydney_Aquarium%2C_Sydney%2C_Australia_-swimming-6a.ogv/Ornithorhynchus_anatinus_-Sydney_Aquarium%2C_Sydney%2C_Australia_-swimming-6a.ogv.360p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="360p.vp9.webm" data-width="480" data-height="360" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/d/db/Ornithorhynchus_anatinus_-Sydney_Aquarium%2C_Sydney%2C_Australia_-swimming-6a.ogv/Ornithorhynchus_anatinus_-Sydney_Aquarium%2C_Sydney%2C_Australia_-swimming-6a.ogv.360p.webm" type="video/webm; codecs="vp8, vorbis"" data-transcodekey="360p.webm" data-width="480" data-height="360" /></video><figcaption>Swimming underwater at <a href="/wiki/Sydney_Aquarium" class="mw-redirect" title="Sydney Aquarium">Sydney Aquarium</a>, Australia</figcaption></figure> The platypus is semiaquatic, inhabiting small streams and rivers over an extensive range from the cold highlands of <a href="/wiki/Tasmania" title="Tasmania">Tasmania</a> and the <a href="/wiki/Australian_Alps" title="Australian Alps">Australian Alps</a> to the <a href="/wiki/Tropical_rainforest" title="Tropical rainforest">tropical rainforests</a> of coastal <a href="/wiki/Queensland" title="Queensland">Queensland</a> as far north as the base of the <a href="/wiki/Cape_York_Peninsula" title="Cape York Peninsula">Cape York Peninsula</a>.<a href="#cite_note-DPIW-66">[65]</a> Inland, its distribution is not well known. It was considered extinct on the <a href="/wiki/South_Australia" title="South Australia">South Australian</a> mainland, with the last sighting recorded at <a href="/wiki/Renmark,_South_Australia" title="Renmark, South Australia">Renmark</a> in 1975.<a href="#cite_note-Sutton-67">[66]</a> In the 1980s, <a href="/wiki/John_Wamsley" title="John Wamsley">John Wamsley</a> created a platypus breeding program in <a href="/wiki/Warrawong_Sanctuary" class="mw-redirect" title="Warrawong Sanctuary">Warrawong Sanctuary</a> (see <a href="#Platypus_in_wildlife_sanctuaries">below</a>), which subsequently closed.<a href="#cite_note-68">[67]</a><a href="#cite_note-69">[68]</a> In 2017 there were some unconfirmed sightings downstream from the sanctuary,<a href="#cite_note-Sutton-67">[66]</a> and in October 2020 a nesting platypus was filmed inside the recently reopened sanctuary.<a href="#cite_note-Sutton_2020-70">[69]</a> There is a population on <a href="/wiki/Kangaroo_Island" title="Kangaroo Island">Kangaroo Island</a><a href="#cite_note-RKI-71">[70]</a> introduced in the 1920s, said to stand at 150 individuals in the Rocky River region of <a href="/wiki/Flinders_Chase_National_Park" title="Flinders Chase National Park">Flinders Chase National Park</a>. In the <a href="/wiki/2019%E2%80%9320_Australian_bushfire_season" title="2019–20 Australian bushfire season">2019–20 Australian bushfire season</a>, large portions of the island burnt, decimating wildlife. However, <a href="/wiki/Department_for_Environment_and_Water_(South_Australia)" title="Department for Environment and Water (South Australia)">SA Department for Environment and Water</a> recovery teams worked to reinstate their habitat, with a number of sightings reported by April 2020.<a href="#cite_note-72">[71]</a> The platypus is no longer found in the main <a href="/wiki/Murray%E2%80%93Darling_basin" title="Murray–Darling basin">Murray–Darling Basin</a>, possibly due to declining <a href="/wiki/Water_quality" title="Water quality">water quality</a> from land clearing and <a href="/wiki/Irrigation" title="Irrigation">irrigation</a><a href="#cite_note-CSIRO-73">[72]</a> although it is found in the <a href="/wiki/Goulburn_River" title="Goulburn River">Goulburn River</a> in Victoria.<a href="#cite_note-74">[73]</a> Along the coastal river systems, its distribution is unpredictable: absent in some relatively healthy rivers, but present in some quite degraded ones, for example the lower <a href="/wiki/Maribyrnong_River" title="Maribyrnong River">Maribyrnong</a>.<a href="#cite_note-APC2-75">[74]</a> In captivity, platypuses have survived to 30 years of age, and wild specimens have been recaptured when 24 years old. <a href="/wiki/Mortality_rate" title="Mortality rate">Mortality rates</a> for adults in the wild appear to be low.<a href="#cite_note-76">[75]</a> Natural predators include <a href="/wiki/Snake" title="Snake">snakes</a>, <a href="/wiki/Rakali" title="Rakali">water rats</a>, <a href="/wiki/Goanna" title="Goanna">goannas</a>, <a href="/wiki/Hawk" title="Hawk">hawks</a>, <a href="/wiki/Owl" title="Owl">owls</a>, and <a href="/wiki/Eagle" title="Eagle">eagles</a>. Low platypus numbers in northern Australia are possibly due to predation by <a href="/wiki/Crocodile" title="Crocodile">crocodiles</a>.<a href="#cite_note-EPA-77">[76]</a> The introduction of <a href="/wiki/Red_fox" title="Red fox">red foxes</a> in 1845 for sport hunting may have had some impact on its numbers on the mainland.<a href="#cite_note-Workshop-38">[37]</a> The platypus is generally <a href="/wiki/Nocturnal" class="mw-redirect" title="Nocturnal">nocturnal</a> and <a href="/wiki/Crepuscular" class="mw-redirect" title="Crepuscular">crepuscular</a>, but can be active on overcast days.<a href="#cite_note-EC-78">[77]</a><a href="#cite_note-HCP-79">[78]</a> Its habitat bridges <a href="/wiki/River" title="River">rivers</a> and the <a href="/wiki/Riparian_zone" title="Riparian zone">riparian zone</a>, where it finds both prey and river banks to dig resting and nesting burrows.<a href="#cite_note-HCP-79">[78]</a> It may have a range of up to 7 km (4.3 mi), with a male's home range overlapping those of three or four females.<a href="#cite_note-AJZ4-80">[79]</a> The platypus is an excellent swimmer and spends much of its time in the water foraging for food. It has a swimming style unique among mammals,<a href="#cite_note-dpipwe-81">[80]</a> propelling itself by alternate strokes of the front feet, while the webbed hind feet are held against the body and only used for steering, along with the tail.<a href="#cite_note-Rowing-82">[81]</a> It can maintain its relatively low body temperature of about 32 °C (90 °F) while foraging for hours in water below 5 °C (41 °F).<a href="#cite_note-ABRS-27">[26]</a> Dives normally last around 30 seconds, with an estimated aerobic limit of 40 seconds, with 10 to 20 seconds at the surface between dives.<a href="#cite_note-Bethge-83">[82]</a><a href="#cite_note-84">[83]</a> The platypus rests in a short, straight burrow in the riverbank about 30 cm (12 in) above water level, its oval entrance-hole often <a href="/wiki/Camouflage" title="Camouflage">hidden</a> under a tangle of roots.<a href="#cite_note-dpipwe-81">[80]</a> It may sleep up to 14 hours per day, after half a day of diving.<a href="#cite_note-85">[84]</a> <div class="mw-heading mw-heading3"><h3 id="Diet">Diet</h3></div> The platypus is a <a href="/wiki/Carnivore" title="Carnivore">carnivore</a>, feeding on <a href="/wiki/Annelid" title="Annelid">annelid</a> worms, <a href="/wiki/Larva" title="Larva">insect larvae</a>, freshwater <a href="/wiki/Shrimp" title="Shrimp">shrimp</a>, and <a href="/wiki/Cherax" title="Cherax">yabby</a> (<a href="/wiki/Crayfish" title="Crayfish">crayfish</a>) that it digs out of the riverbed with its snout or catches while swimming. It carries prey to the surface in cheek-pouches before eating it.<a href="#cite_note-dpipwe-81">[80]</a> It eats about 20% of its own weight each day, which requires it to spend an average of 12 hours daily looking for food.<a href="#cite_note-Bethge-83">[82]</a> <div class="mw-heading mw-heading3"><h3 id="Reproduction">Reproduction</h3></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Ornithorhynchus_anatinus_-_nest_with_eggs_-_MUSE.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2d/Ornithorhynchus_anatinus_-_nest_with_eggs_-_MUSE.JPG/220px-Ornithorhynchus_anatinus_-_nest_with_eggs_-_MUSE.JPG" decoding="async" width="220" height="204" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2d/Ornithorhynchus_anatinus_-_nest_with_eggs_-_MUSE.JPG/330px-Ornithorhynchus_anatinus_-_nest_with_eggs_-_MUSE.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2d/Ornithorhynchus_anatinus_-_nest_with_eggs_-_MUSE.JPG/440px-Ornithorhynchus_anatinus_-_nest_with_eggs_-_MUSE.JPG 2x" data-file-width="1579" data-file-height="1467" /></a><figcaption>Platypus's nest with eggs (replica)</figcaption></figure> The species has a single <a href="/wiki/Breeding_season" class="mw-redirect" title="Breeding season">breeding season</a> between June and October, with some local variation.<a href="#cite_note-EPA-77">[76]</a> Investigations have found both resident and transient platypuses, and suggest a <a href="/wiki/Polygyny_in_animals" title="Polygyny in animals">polygynous</a> mating system.<a href="#cite_note-AJZ2-86">[85]</a> Females are believed to become sexually mature in their second year, with breeding observed in animals over nine years old.<a href="#cite_note-AJZ2-86">[85]</a> During <a href="/wiki/Copulation_(zoology)" title="Copulation (zoology)">copulation</a>, the male grasps the female's tail with his bill, wraps his tail around her, then grips her neck or shoulder, everts his <a href="/wiki/Penis" title="Penis">penis</a> through his cloaca, and inserts it into her <a href="/wiki/Urogenital_sinus" title="Urogenital sinus">urogenital sinus</a>.<a href="#cite_note-87">[86]</a> He takes no part in nesting, living in his year-long resting burrow. After mating, the female constructs a deep, elaborate nesting burrow up to 20 m (65 ft) long.<a href="#cite_note-ADW-88">[87]</a> She tucks fallen leaves and reeds underneath her curled tail, dragging them to the burrow to soften the tunnel floor with folded wet leaves, and to line the nest at the end with bedding.<a href="#cite_note-APC-21">[21]</a> The female has two <a href="/wiki/Ovary" title="Ovary">ovaries</a>, but only the left one is functional.<a href="#cite_note-89">[88]</a><a href="#cite_note-EC-78">[77]</a> She lays one to three (usually two) small, leathery eggs (similar to those of reptiles), about <style data-mw-deduplicate="TemplateStyles:r1154941027">.mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .den{vertical-align:sub}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}</style>11 mm (7⁄16 in) in diameter and slightly rounder than bird eggs.<a href="#cite_note-BSED-90">[89]</a> The eggs develop <a href="/wiki/Uterus" title="Uterus">in utero</a> for about 28 days, with only about 10 days of external <a href="/wiki/Avian_incubation" class="mw-redirect" title="Avian incubation">incubation</a> (in contrast to a chicken egg, which spends about one day in tract and 21 days externally).<a href="#cite_note-EC-78">[77]</a> The female curls around the incubating eggs, which develop in three phases.<a href="#cite_note-RS2-91">[90]</a> In the first, the <a href="/wiki/Embryo" title="Embryo">embryo</a> has no functional organs and relies on the <a href="/wiki/Yolk_sac" title="Yolk sac">yolk sac</a> for sustenance, until the sac is absorbed.<a href="#cite_note-92">[91]</a> During the second phase, the digits develop, and in the last phase, the <a href="/wiki/Egg_tooth" title="Egg tooth">egg tooth</a> appears.<a href="#cite_note-RS2-91">[90]</a> At first, European <a href="/wiki/Natural_history" title="Natural history">naturalists</a> could hardly believe that the female platypus lays eggs, but this was finally confirmed by <a href="/wiki/William_Hay_Caldwell" title="William Hay Caldwell">William Hay Caldwell</a> in 1884.<a href="#cite_note-ABRS-27">[26]</a><a href="#cite_note-PS-50">[49]</a> Most mammal zygotes go through <a href="/wiki/Holoblastic" class="mw-redirect" title="Holoblastic">holoblastic</a> cleavage, splitting into multiple divisible daughter cells. However, <a href="/wiki/Monotremes" class="mw-redirect" title="Monotremes">monotremes</a> like the platypus, along with <a href="/wiki/Sauropsida" title="Sauropsida">reptiles and birds</a>, undergo meroblastic cleavage, in which the ovum does not split completely. The cells at the edge of the yolk remain continuous with the egg's cytoplasm, allowing the yolk and embryo to exchange waste and nutrients with the egg through the cytoplasm.<a href="#cite_note-93">[92]</a> Young platypus are called "puggles". Newly hatched platypuses are vulnerable, blind, and hairless, and are fed by the mother's milk, that provides all the requirements for growth and development.<a href="#cite_note-94">[93]</a><a href="#cite_note-95">[94]</a> The platypus's <a href="/wiki/Mammary_gland" title="Mammary gland">mammary glands</a> lack teats, with milk released through pores in the skin. The milk pools in grooves on the mother's abdomen, allowing the young to lap it up.<a href="#cite_note-APC-21">[21]</a><a href="#cite_note-EPA-77">[76]</a> After they hatch, the offspring are milk-fed for three to four months. During incubation and weaning, the mother initially leaves the burrow only for short periods to forage. She leaves behind her a number of thin soil plugs along the length of the burrow, possibly to protect the young from predators; pushing past these on her return squeezes water from her fur and allows the burrow to remain dry.<a href="#cite_note-QM-96">[95]</a> After about five weeks, the mother begins to spend more time away from her young, and at around four months, the young emerge from the burrow.<a href="#cite_note-EPA-77">[76]</a> A platypus is born with teeth, but these drop out at a very early age, leaving the horny plates it uses to grind food.<a href="#cite_note-Piper-2007-44">[43]</a> <div class="mw-heading mw-heading2"><h2 id="Evolution">Evolution</h2></div> <table style="border: 1px solid #ccc; vertical-align: middle; width: 248px; margin:0.2em 0 0.2em 1em; float:right; clear:right;"> <tbody><tr> <td style="padding: 5px"> <div class="clade"><style data-mw-deduplicate="TemplateStyles:r1258728058">body.skin-vector-2022 .mw-parser-output div.clade,body.skin-minerva .mw-parser-output div.clade{overflow-x:auto;overflow-y:hidden}body.skin-minerva .mw-parser-output div.clade p{font-size:inherit}.mw-parser-output table.clade{border-spacing:0;margin:0;font-size:100%;line-height:100%;border-collapse:separate;width:auto}.mw-parser-output table.clade table.clade{width:100%;line-height:inherit}.mw-parser-output table.clade td.clade-label{min-width:0.2em;width:0.2em;padding:0.1em 0.25em;vertical-align:bottom;text-align:center;border-left:1px solid;border-bottom:1px solid;white-space:nowrap}.mw-parser-output table.clade td.clade-label::before,.mw-parser-output table.clade td.clade-slabel::before{content:"\2060 "}.mw-parser-output table.clade td.clade-fixed-width{overflow:hidden;text-overflow:ellipsis}.mw-parser-output table.clade td.clade-fixed-width:hover{overflow:visible}.mw-parser-output table.clade td.clade-label.first{border-left:none;border-right:none}.mw-parser-output table.clade td.clade-label.reverse{border-left:none;border-right:1px solid}.mw-parser-output table.clade td.clade-slabel{padding:0.1em 0.25em;vertical-align:top;text-align:center;border-left:1px solid;white-space:nowrap}.mw-parser-output table.clade td.clade-slabel:hover{overflow:visible}.mw-parser-output table.clade td.clade-slabel.last{border-left:none;border-right:none}.mw-parser-output table.clade td.clade-slabel.reverse{border-left:none;border-right:1px solid}.mw-parser-output table.clade td.clade-bar{vertical-align:middle;text-align:left;padding:0 0.5em;position:relative}.mw-parser-output table.clade td.clade-bar.reverse{text-align:right;position:relative}.mw-parser-output table.clade td.clade-leaf{border:0;padding:0;text-align:left}.mw-parser-output table.clade td.clade-leafR{border:0;padding:0;text-align:right}.mw-parser-output table.clade td.clade-leaf.reverse{text-align:right}.mw-parser-output table.clade:hover span.linkA{background-color:yellow}.mw-parser-output table.clade:hover span.linkB{background-color:green}</style> <table class="clade"> <tbody><tr> <td class="clade-label first"> </td> <td rowspan="2" class="clade-leaf"> <div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1258728058"> <table class="clade"> <tbody><tr> <td class="clade-label first"> </td> <td rowspan="2" class="clade-leaf"> <div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1258728058"> <table class="clade"> <tbody><tr> <td class="clade-label first"> </td> <td rowspan="2" class="clade-leaf"> Platypus </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"> </td> <td rowspan="2" class="clade-leaf"> <a href="/wiki/Echidna" title="Echidna">Echidnas</a> </td></tr> <tr> <td class="clade-slabel last"> </td></tr></tbody></table></div> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"><div style="display:inline" class="nowrap"> live birth </div> </td> <td rowspan="2" class="clade-leaf"> <div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1258728058"> <table class="clade"> <tbody><tr> <td class="clade-label first"> </td> <td rowspan="2" class="clade-leaf"> <a href="/wiki/Marsupial" title="Marsupial">Marsupials</a> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"><div style="display:inline" class="nowrap"> true placenta </div> </td> <td rowspan="2" class="clade-leaf"> <a href="/wiki/Eutheria" title="Eutheria">Eutherians</a> </td></tr> <tr> <td class="clade-slabel last"> </td></tr></tbody></table></div> </td></tr> <tr> <td class="clade-slabel last"> </td></tr></tbody></table></div> </td></tr> <tr> <td class="clade-slabel last"> </td></tr></tbody></table></div> </td></tr> <tr> <td style="text-align: left; font-size: 88%; border: 0; padding: 0;">Evolutionary relationships between the platypus and other mammals<a href="#cite_note-LecointreGuyader2006-97">[96]</a> </td></tr></tbody></table> The platypus and other monotremes were very poorly understood, and some of the 19th century myths that grew up around them – for example, that the monotremes were "inferior" or <a href="/wiki/Reptile" title="Reptile">quasireptilian</a> – still endure.<a href="#cite_note-Rodent-98">[97]</a> In 1947, <a href="/wiki/William_King_Gregory" title="William King Gregory">William King Gregory</a> theorised that placental mammals and marsupials may have diverged earlier, and a subsequent branching divided the monotremes and marsupials, but later research and fossil discoveries have suggested this is incorrect.<a href="#cite_note-Rodent-98">[97]</a><a href="#cite_note-JM-99">[98]</a> In fact, modern monotremes are the survivors of an early branching of the mammal tree, and a later branching is thought to have led to the <a href="/wiki/Marsupial" title="Marsupial">marsupial</a> and placental groups.<a href="#cite_note-Rodent-98">[97]</a><a href="#cite_note-JME-100">[99]</a> <a href="/wiki/Molecular_clock" title="Molecular clock">Molecular clock</a> and fossil dating suggest platypuses split from <a href="/wiki/Echidna" title="Echidna">echidnas</a> around 19–48 million years ago.<a href="#cite_note-Phillips-101">[100]</a> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Steropodon_BW.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0e/Steropodon_BW.jpg/220px-Steropodon_BW.jpg" decoding="async" width="220" height="141" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0e/Steropodon_BW.jpg/330px-Steropodon_BW.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0e/Steropodon_BW.jpg/440px-Steropodon_BW.jpg 2x" data-file-width="800" data-file-height="511" /></a><figcaption>Reconstruction of ancient platypus relative Steropodon</figcaption></figure> The oldest discovered fossil of the modern platypus dates back to about 100,000 years ago during the <a href="/wiki/Quaternary" title="Quaternary">Quaternary</a> period, though a limb bone of Ornithorhynchus is known from <a href="/wiki/Pliocene" title="Pliocene">Pliocene</a>-aged strata.<a href="#cite_note-102">[101]</a> The extinct monotremes <a href="/wiki/Teinolophos" title="Teinolophos">Teinolophos</a> and <a href="/wiki/Steropodon" title="Steropodon">Steropodon</a> from the <a href="/wiki/Cretaceous" title="Cretaceous">Cretaceous</a> were once thought to be closely related to the modern platypus,<a href="#cite_note-JM-99">[98]</a> but are now considered more basal taxa.<a href="#cite_note-Thomas_H._Rich_2016-103">[102]</a> The fossilised Steropodon was discovered in <a href="/wiki/New_South_Wales" title="New South Wales">New South Wales</a> and is composed of an opalised lower jawbone with three molar teeth (whereas the adult contemporary platypus is toothless). The molar teeth were initially thought to be <a href="/wiki/Tribosphenic_molar" class="mw-redirect" title="Tribosphenic molar">tribosphenic</a>, which would have supported a variation of Gregory's theory, but later research has suggested, while they have three cusps, they evolved under a separate process.<a href="#cite_note-MS-104">[103]</a> The fossil jaw of Teinolophos is thought to be about 110 million years old, making it the oldest mammal fossil found in Australia. Unlike the modern platypus (and <a href="/wiki/Echidna" title="Echidna">echidnas</a>), Teinolophos lacked a beak.<a href="#cite_note-Thomas_H._Rich_2016-103">[102]</a> In 2024, <a href="/wiki/Late_Cretaceous" title="Late Cretaceous">Late Cretaceous</a> (<a href="/wiki/Cenomanian" title="Cenomanian">Cenomanian</a>)-aged fossil specimens of actual early platypus relatives were recovered from the same rocks as Steropodon, including the <a href="/wiki/Basal_(phylogenetics)" title="Basal (phylogenetics)">basal</a> <a href="/wiki/Opalios" title="Opalios">Opalios</a> and the more derived <a href="/wiki/Dharragarra" title="Dharragarra">Dharragarra</a>, the latter of which may be the oldest member of the platypus <a href="/wiki/Stem_group" class="mw-redirect" title="Stem group">stem</a>-lineage, as it retains the same <a href="/wiki/Dentition" title="Dentition">dental formula</a> found in Cenozoic platypus relatives.<a href="#cite_note-:0-105">[104]</a> <a href="/wiki/Monotrematum" title="Monotrematum">Monotrematum</a> and <a href="/wiki/Patagorhynchus" title="Patagorhynchus">Patagorhynchus</a>, two other fossil relatives of the platypus, are known from the latest Cretaceous (<a href="/wiki/Maastrichtian" title="Maastrichtian">Maastrichtian</a>) and the mid-<a href="/wiki/Paleocene" title="Paleocene">Paleocene</a> of <a href="/wiki/Argentina" title="Argentina">Argentina</a>, indicating that some monotremes managed to colonize <a href="/wiki/South_America" title="South America">South America</a> from Australia when the two continents were connected via <a href="/wiki/Antarctica" title="Antarctica">Antarctica</a>. These are also considered potential members of the platypus stem-lineage.<a href="#cite_note-MS-104">[103]</a><a href="#cite_note-patagonia-106">[105]</a><a href="#cite_note-:0-105">[104]</a> The closest fossil relative of the platypus was <a href="/wiki/Obdurodon" title="Obdurodon">Obdurodon</a>, known from the late <a href="/wiki/Oligocene" title="Oligocene">Oligocene</a> to the <a href="/wiki/Miocene" title="Miocene">Miocene</a> of Australia. It closely resembled the modern platypus, aside from the presence of molar teeth.<a href="#cite_note-:0-105">[104]</a> A fossilised tooth of the giant platypus <a href="/wiki/Obdurodon_tharalkooschild" class="mw-redirect" title="Obdurodon tharalkooschild">Obdurodon tharalkooschild</a> was dated 5–15 million years ago. Judging by the tooth, the animal measured 1.3 metres long, making it the largest platypus on record.<a href="#cite_note-107">[106]</a> The loss of teeth in the modern platypus has long been enigmatic, as a distinctive lower molar tooth row was previously present in its lineage for over 95 million years. Even its closest relative, Obdurodon, which otherwise closely resembles the platypus, retained this tooth row. More recent studies indicate that this tooth loss was a geologically very recent event, occurring only around the <a href="/wiki/Pliocene" title="Pliocene">Plio</a>-<a href="/wiki/Pleistocene" title="Pleistocene">Pleistocene</a> (around 2.5 million years ago), when the <a href="/wiki/Rakali" title="Rakali">rakali</a>, a large semiaquatic <a href="/wiki/Rodent" title="Rodent">rodent</a>, colonized Australia from <a href="/wiki/New_Guinea" title="New Guinea">New Guinea</a>. The platypus, which previously fed on a wide array of hard and soft-bodied prey, was outcompeted by the rakali over hard-bodied prey such as crayfish and mussels. This competition may have selected for the loss of teeth in the platypus and their replacement by horny pads, as a way of specializing for softer-bodied prey, which the rakali did not compete with it over.<a href="#cite_note-:0-105">[104]</a> <div class="mw-heading mw-heading3"><h3 id="Genome">Genome</h3></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Platypus_skeleton_Pengo.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3f/Platypus_skeleton_Pengo.jpg/220px-Platypus_skeleton_Pengo.jpg" decoding="async" width="220" height="99" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3f/Platypus_skeleton_Pengo.jpg/330px-Platypus_skeleton_Pengo.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3f/Platypus_skeleton_Pengo.jpg/440px-Platypus_skeleton_Pengo.jpg 2x" data-file-width="1566" data-file-height="705" /></a><figcaption>Platypus skeleton</figcaption></figure> Because of the early divergence from the <a href="/wiki/Theria" title="Theria">therian mammals</a> and the low numbers of extant monotreme species, the platypus is a frequent subject of research in evolutionary biology. In 2004, <a href="/wiki/Research" title="Research">researchers</a> at the <a href="/wiki/Australian_National_University" title="Australian National University">Australian National University</a> discovered the platypus has ten <a href="/wiki/Sex_chromosome" title="Sex chromosome">sex chromosomes</a>, compared with two (XY) in most other mammals. These ten chromosomes form five unique pairs of XY in males and XX in females, i.e. males are X1Y1X2Y2X3Y3X4Y4X5Y5.<a href="#cite_note-discover-108">[107]</a> One of the X chromosomes of the platypus has great homology to the bird Z chromosome.<a href="#cite_note-109">[108]</a> The platypus genome also has both reptilian and mammalian genes associated with egg fertilisation.<a href="#cite_note-draft_genome-58">[57]</a><a href="#cite_note-110">[109]</a> Though the platypus lacks the mammalian sex-determining gene <a href="/wiki/SRY" class="mw-redirect" title="SRY">SRY</a>, a study found that the mechanism of sex determination is the <a href="/wiki/Anti-M%C3%BCllerian_hormone" title="Anti-Müllerian hormone">AMH gene</a> on the oldest <a href="/wiki/Y_chromosome" title="Y chromosome">Y chromosome</a>.<a href="#cite_note-111">[110]</a><a href="#cite_note-112">[111]</a> A draft version of the platypus genome sequence was published in <a href="/wiki/Nature_(journal)" title="Nature (journal)">Nature</a> on 8 May 2008, revealing both reptilian and mammalian elements, as well as two genes found previously only in birds, amphibians, and fish. More than 80% of the platypus's genes are common to the other mammals whose genomes have been sequenced.<a href="#cite_note-draft_genome-58">[57]</a> An updated genome, the most complete on record, was published in 2021, together with the genome of the <a href="/wiki/Short-beaked_echidna" title="Short-beaked echidna">short-beaked echidna</a>.<a href="#cite_note-113">[112]</a> <div class="mw-heading mw-heading2"><h2 id="Conservation">Conservation</h2></div> <div class="mw-heading mw-heading3"><h3 id="Status_and_threats">Status and threats</h3></div> Except for its loss from the state of South Australia, the platypus occupies the same general distribution as it did prior to <a href="/wiki/European_settlement_of_Australia" class="mw-redirect" title="European settlement of Australia">European settlement of Australia</a>. However, local changes and fragmentation of distribution due to human modification of its habitat are documented. Its historical abundance is unknown and its current abundance difficult to gauge, but it is assumed to have declined in numbers, although as of 1998 was still being considered as common over most of its current range.<a href="#cite_note-HCP-79">[78]</a> The species was extensively hunted for its fur until the early years of the 20th century. Although the species gained legal protections beginning in Victoria in 1890<a href="#cite_note-1890act-114">[113]</a> and throughout Australia by 1912,<a href="#cite_note-unsw-8">[8]</a> until about 1950 it was still at risk of drowning in the nets of inland <a href="/wiki/Fisheries" class="mw-redirect" title="Fisheries">fisheries</a>.<a href="#cite_note-CSIRO-73">[72]</a> The <a href="/wiki/International_Union_for_Conservation_of_Nature" title="International Union for Conservation of Nature">International Union for Conservation of Nature</a> recategorised its status as "near threatened" in 2016.<a href="#cite_note-115">[114]</a> The species is protected by law, but the only state in which it is listed as endangered is South Australia, under the <a href="/wiki/National_Parks_and_Wildlife_Act_1972" class="mw-redirect" title="National Parks and Wildlife Act 1972">National Parks and Wildlife Act 1972</a>. In November 2020 a recommendation was made to list the platypus as a vulnerable species across all states<a href="#cite_note-2020report-9">[9]</a> with a vulnerable listing being made official in Victoria under the state's <a href="/wiki/Flora_and_Fauna_Guarantee_Act_1988" title="Flora and Fauna Guarantee Act 1988">Flora and Fauna Guarantee Act 1988</a> on 10 January 2021.<a href="#cite_note-riskassessment-116">[115]</a> <div class="mw-heading mw-heading4"><h4 id="Habitat_destruction">Habitat destruction</h4></div> The platypus is not considered to be in immediate danger of extinction, because conservation measures have been successful, but it could be adversely affected by habitat disruption caused by <a href="/wiki/Dam" title="Dam">dams</a>, <a href="/wiki/Irrigation" title="Irrigation">irrigation</a>, <a href="/wiki/Pollution" title="Pollution">pollution</a>, netting, and trapping.<a href="#cite_note-117">[116]</a> Reduction of watercourse flows and water levels through excessive droughts and extraction of water for industrial, agricultural, and domestic supplies are also considered a threat. The <a href="/wiki/IUCN" class="mw-redirect" title="IUCN">IUCN</a> lists the platypus on its <a href="/wiki/Red_List" class="mw-redirect" title="Red List">Red List</a> as "<a href="/wiki/Near_Threatened" class="mw-redirect" title="Near Threatened">Near Threatened</a>"<a href="#cite_note-iucn-1">[1]</a> as assessed in 2016, when it was estimated that numbers had reduced by about 30 percent on average since European settlement. The animal is listed as endangered in South Australia, but it is not covered at all under the federal <a href="/wiki/EPBC_Act" class="mw-redirect" title="EPBC Act">EPBC Act</a>.<a href="#cite_note-natgeog-118">[117]</a><a href="#cite_note-119">[118]</a> Researchers have worried for years that declines have been greater than assumed.<a href="#cite_note-natgeog-118">[117]</a> In January 2020, researchers from the <a href="/wiki/University_of_New_South_Wales" title="University of New South Wales">University of New South Wales</a> presented evidence that the platypus is at risk of <a href="/wiki/Extinction" title="Extinction">extinction</a>, due to a combination of extraction of <a href="/wiki/Water_resource" class="mw-redirect" title="Water resource">water resources</a>, <a href="/wiki/Land_clearing" class="mw-redirect" title="Land clearing">land clearing</a>, <a href="/wiki/Climate_change" title="Climate change">climate change</a> and severe <a href="/wiki/Drought" title="Drought">drought</a>.<a href="#cite_note-EA-20200121-120">[119]</a><a href="#cite_note-brink2020-121">[120]</a> The study predicted that, considering current threats, the animals' abundance would decline by 47–66% and <a href="/wiki/Metapopulation" title="Metapopulation">metapopulation</a> occupancy by 22–32% over 50 years, causing "extinction of local populations across about 40% of the range". Under projections of climate change projections to 2070, reduced habitat due to drought would lead to 51–73% reduced abundance and 36–56% reduced metapopulation occupancy within 50 years respectively. These predictions suggested that the species would fall under the "Vulnerable" classification. The authors stressed the need for national conservation efforts, which might include conducting more surveys, tracking trends, reduction of threats and improvement of river management to ensure healthy platypus habitat.<a href="#cite_note-122">[121]</a> Co-author Gilad Bino is concerned that the estimates of the 2016 baseline numbers could be wrong, and numbers may have been reduced by as much as half already.<a href="#cite_note-natgeog-118">[117]</a> A November 2020 report by scientists from the <a href="/wiki/University_of_New_South_Wales" title="University of New South Wales">University of New South Wales</a>, funded by a research grant from the <a href="/wiki/Australian_Conservation_Foundation" title="Australian Conservation Foundation">Australian Conservation Foundation</a> in collaboration with the <a href="/wiki/World_Wildlife_Fund" class="mw-redirect" title="World Wildlife Fund">World Wildlife Fund Australia</a> and the <a href="/wiki/Humane_Society_International_Australia" title="Humane Society International Australia">Humane Society International Australia</a> revealed that that platypus habitat in Australia had shrunk by 22 per cent in the previous 30 years, and recommended that the platypus should be listed as a threatened species under the EPBC Act.<a href="#cite_note-2020report-9">[9]</a><a href="#cite_note-123">[122]</a> Declines in population had been greatest in NSW, in particular in the <a href="/wiki/Murray%E2%80%93Darling_basin" title="Murray–Darling basin">Murray–Darling basin</a>.<a href="#cite_note-124">[123]</a><a href="#cite_note-2020report-9">[9]</a> <div class="mw-heading mw-heading4"><h4 id="Disease">Disease</h4></div> Platypuses generally suffer from few <a href="/wiki/Disease" title="Disease">diseases</a> in the wild; however, as of 2008 there was concern in Tasmania about the potential impacts of a disease caused by the fungus <a href="/wiki/Mucor_amphibiorum" class="mw-redirect" title="Mucor amphibiorum">Mucor amphibiorum</a>. The disease (termed <a href="/wiki/Mucormycosis" title="Mucormycosis">mucormycosis</a>) affects only Tasmanian platypuses, and had not been observed in platypuses in mainland Australia. Affected platypuses can develop skin lesions or <a href="/wiki/Ulcer" title="Ulcer">ulcers</a> on various parts of their bodies, including their backs, tails, and legs. Mucormycosis can kill platypuses, death arising from secondary infection and by affecting the animals' ability to maintain body temperature and forage efficiently. The Biodiversity Conservation Branch at the Department of Primary Industries and Water collaborated with NRM north and <a href="/wiki/University_of_Tasmania" title="University of Tasmania">University of Tasmania</a> researchers to determine the impacts of the disease on Tasmanian platypuses, as well as the mechanism of transmission and spread of the disease.<a href="#cite_note-DPIW2-125">[124]</a> <div class="mw-heading mw-heading3"><h3 id="Wildlife_sanctuaries">Wildlife sanctuaries</h3></div> Much of the world was introduced to the platypus in 1939 when <a href="/wiki/National_Geographic_Magazine" class="mw-redirect" title="National Geographic Magazine">National Geographic Magazine</a> published an article on the platypus and the efforts to study and raise it in captivity. The latter is a difficult task, and only a few young have been successfully raised since, notably at <a href="/wiki/Healesville_Sanctuary" title="Healesville Sanctuary">Healesville Sanctuary</a> in <a href="/wiki/Victoria_(Australia)" class="mw-redirect" title="Victoria (Australia)">Victoria</a>. The leading figure in these efforts was <a href="/wiki/David_Fleay" title="David Fleay">David Fleay</a>, who established a platypusary (a simulated stream in a tank) at the Healesville Sanctuary, where breeding was successful in 1943.<a href="#cite_note-Zoos_Voctoria-126">[125]</a> In 1972, he found a dead baby of about 50 days old, which had presumably been born in captivity, at his <a href="/wiki/David_Fleay_Wildlife_Park" title="David Fleay Wildlife Park">wildlife park</a> at <a href="/wiki/Burleigh_Heads,_Queensland" title="Burleigh Heads, Queensland">Burleigh Heads</a> on the <a href="/wiki/Gold_Coast,_Queensland" title="Gold Coast, Queensland">Gold Coast</a>, Queensland.<a href="#cite_note-DF-127">[126]</a> Healesville repeated its success in 1998 and again in 2000 with a similar stream tank.<a href="#cite_note-catalyst-128">[127]</a> Since 2008, platypus has bred regularly at Healesville,<a href="#cite_note-129">[128]</a> including second-generation (captive born themselves breeding in captivity).<a href="#cite_note-PlatConservZoo-130">[129]</a> <a href="/wiki/Taronga_Zoo" title="Taronga Zoo">Taronga Zoo</a> in <a href="/wiki/Sydney" title="Sydney">Sydney</a> bred twins in 2003, and breeding was again successful there in 2006.<a href="#cite_note-catalyst-128">[127]</a> <div class="mw-heading mw-heading3"><h3 id="Captivity">Captivity</h3></div> As of 2019, the only platypuses in captivity outside of Australia are in the <a href="/wiki/San_Diego_Zoo_Safari_Park" title="San Diego Zoo Safari Park">San Diego Zoo Safari Park</a> in the <a href="/wiki/U.S._state" title="U.S. state">U.S. state</a> of <a href="/wiki/California" title="California">California</a>.<a href="#cite_note-131">[130]</a><a href="#cite_note-132">[131]</a> Three attempts were made to bring the animals to the <a href="/wiki/Bronx_Zoo" title="Bronx Zoo">Bronx Zoo</a>, in 1922, 1947, and 1958. Of these, only two of the three animals introduced in 1947, <a href="/wiki/Penelope_(platypus)" title="Penelope (platypus)">Penelope</a> and Cecil,<a href="#cite_note-133">[132]</a> lived longer than eighteen months.<a href="#cite_note-134">[133]</a> <div class="mw-heading mw-heading2"><h2 id="Human_interactions">Human interactions</h2></div> <div class="mw-heading mw-heading3"><h3 id="Usage">Usage</h3></div> <a href="/wiki/Aboriginal_Australians" title="Aboriginal Australians">Aboriginal Australians</a> used to hunt platypuses for food (their fatty tails being particularly nutritious), while, after colonisation, Europeans hunted them for fur from the late 19th century until 1912, when it was prohibited by law.<a href="#cite_note-1912article-135">[134]</a> In addition, European researchers captured and killed platypus or removed their eggs, partly in order to increase scientific knowledge, but also to gain prestige and outcompete rivals from different countries.<a href="#cite_note-2020report-9">[9]</a> <div class="mw-heading mw-heading3"><h3 id="Cultural_references">Cultural references</h3></div> The platypus has been a subject in the <a href="/wiki/Dreamtime" class="mw-redirect" title="Dreamtime">Dreamtime</a> stories of <a href="/wiki/Aboriginal_Australians" title="Aboriginal Australians">Aboriginal Australians</a>, some of whom believed the animal was a hybrid of a duck and a <a href="/wiki/Rakali" title="Rakali">water rat</a>.<a href="#cite_note-Gadi-136">[135]</a>: 57–60  According to one story of the upper <a href="/wiki/Darling_River" title="Darling River">Darling River</a>,<a href="#cite_note-2020report-9">[9]</a> the major animal groups, the land animals, water animals and birds, all competed for the platypus to join their respective groups, but the platypus ultimately decided to not join any of them, feeling that he did not need to be part of a group to be special,<a href="#cite_note-Gadi-136">[135]</a>: 83–85  and wished to remain friends with all of those groups.<a href="#cite_note-2020report-9">[9]</a> Another Dreaming story emanate of the upper Darling tells of a young duck which ventured too far, ignoring the warnings of her tribe, and was kidnapped by a large water-rat called Biggoon. After managing to escape after some time, she returned and laid two eggs which hatched into strange furry creatures, so they were all banished and went to live in the mountains.<a href="#cite_note-2020report-9">[9]</a> The platypus is also used by some Aboriginal peoples as a <a href="/wiki/Totem" title="Totem">totem</a>, which is to them "a natural object, plant or animal that is inherited by members of a clan or family as their spiritual emblem", and the animal holds special meaning as a totem animal for the <a href="/wiki/Wadi_Wadi" class="mw-redirect" title="Wadi Wadi">Wadi Wadi</a> people, who live along the <a href="/wiki/Murray_River" title="Murray River">Murray River</a>. Because of their cultural significance and importance in <a href="/wiki/Connection_to_country" class="mw-redirect" title="Connection to country">connection to country</a>, the platypus is protected and conserved by these Indigenous peoples.<a href="#cite_note-2020report-9">[9]</a> The platypus has often been used as a symbol of Australia's <a href="/wiki/Cultural_identity" title="Cultural identity">cultural identity</a>. In the 1940s, live platypuses were given to allies in the <a href="/wiki/Second_World_War" class="mw-redirect" title="Second World War">Second World War</a>, in order to strengthen ties and boost morale.<a href="#cite_note-2020report-9">[9]</a> Platypuses have been used several times as mascots: Syd the platypus was one of the three mascots chosen for the <a href="/wiki/2000_Summer_Olympics" title="2000 Summer Olympics">Sydney 2000 summer Olympics</a> along with an echidna and a <a href="/wiki/Kookaburra" title="Kookaburra">kookaburra</a>,<a href="#cite_note-137">[136]</a> Expo Oz the platypus was the mascot for <a href="/wiki/World_Expo_88" title="World Expo 88">World Expo 88</a>, which was held in <a href="/wiki/Brisbane" title="Brisbane">Brisbane</a> in 1988,<a href="#cite_note-138">[137]</a> and Hexley the platypus is the mascot for the <a href="/wiki/Darwin_(operating_system)" title="Darwin (operating system)">Darwin</a> operating system, the <a href="/wiki/BSD" class="mw-redirect" title="BSD">BSD</a>-based core of <a href="/wiki/MacOS" title="MacOS">macOS</a> and other operating systems from <a href="/wiki/Apple_Inc." title="Apple Inc.">Apple Inc.</a><a href="#cite_note-139">[138]</a> Since the introduction of <a href="/wiki/Decimal_currency" class="mw-redirect" title="Decimal currency">decimal currency</a> to <a href="/wiki/Australia" title="Australia">Australia</a> in 1966, the embossed image of a platypus, designed and sculpted by <a href="/wiki/Stuart_Devlin" title="Stuart Devlin">Stuart Devlin</a>, has appeared on the reverse (tails) side of the <a href="/wiki/Australian_twenty-cent_coin" title="Australian twenty-cent coin">20-cent coin</a>.<a href="#cite_note-140">[139]</a> The platypus has frequently appeared in Australian postage stamps, most recently the 2015 "Native Animals" series and the 2016 "Australian Animals Monotremes" series.<a href="#cite_note-141">[140]</a><a href="#cite_note-142">[141]</a> In the American animated series <a href="/wiki/Phineas_and_Ferb" title="Phineas and Ferb">Phineas and Ferb</a>, the <a href="/wiki/Title_character" title="Title character">title characters</a> own a pet bluish-green platypus named <a href="/wiki/Perry_the_Platypus" title="Perry the Platypus">Perry</a> who, unknown to them, is a secret agent. Such choices were inspired by media underuse, as well as to exploit the animal's striking appearance;<a href="#cite_note-QA-143">[142]</a> additionally, show creator <a href="/wiki/Dan_Povenmire" title="Dan Povenmire">Dan Povenmire</a>, who also wrote the character's theme song, said that its opening lyrics are based on the introductory sentence of the Platypus article on Wikipedia, copying the "semiaquatic egg-laying mammal" phrase word for word and appending the phrase "of action";<a href="#cite_note-144">[143]</a> however, the article did not include "egg-laying mammal" in the lead sentence until 2014, several years after the song released. As a character, Perry has been well received by both fans and critics.<a href="#cite_note-star-145">[144]</a><a href="#cite_note-146">[145]</a> Coincidentally, real platypuses show a similar cyan colour when seen under ultraviolet lighting.<a href="#cite_note-147">[146]</a> <ul class="gallery mw-gallery-packed"> <li class="gallerybox" style="width: 322px"> <div class="thumb" style="width: 320px;"><a href="/wiki/File:Platypus_cape_unknown_tasmania.jpg" class="mw-file-description" title="Platypus fur cape made in 1890, now in the National Gallery of Victoria"><img alt="Platypus fur cape made in 1890, now in the National Gallery of Victoria" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/08/Platypus_cape_unknown_tasmania.jpg/480px-Platypus_cape_unknown_tasmania.jpg" decoding="async" width="320" height="180" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/08/Platypus_cape_unknown_tasmania.jpg/720px-Platypus_cape_unknown_tasmania.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/08/Platypus_cape_unknown_tasmania.jpg/960px-Platypus_cape_unknown_tasmania.jpg 2x" data-file-width="3840" data-file-height="2160" /></a></div> <div class="gallerytext">Platypus fur cape made in 1890, now in the National Gallery of Victoria</div> </li> <li class="gallerybox" style="width: 182px"> <div class="thumb" style="width: 180px;"><a href="/wiki/File:%22Nam_Sang_Woo_Safety_Matches%22_platypus_matchbox_label_art_-_from,_Collectie_NMvWereldculturen,_TM-6477-76,_Etiketten_van_luciferdoosjes,_1900-1949_(cropped).jpg" class="mw-file-description" title="Early 20th-century matchbox label"><img alt="Early 20th-century matchbox label" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/%22Nam_Sang_Woo_Safety_Matches%22_platypus_matchbox_label_art_-_from%2C_Collectie_NMvWereldculturen%2C_TM-6477-76%2C_Etiketten_van_luciferdoosjes%2C_1900-1949_%28cropped%29.jpg/270px-%22Nam_Sang_Woo_Safety_Matches%22_platypus_matchbox_label_art_-_from%2C_Collectie_NMvWereldculturen%2C_TM-6477-76%2C_Etiketten_van_luciferdoosjes%2C_1900-1949_%28cropped%29.jpg" decoding="async" width="180" height="180" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/%22Nam_Sang_Woo_Safety_Matches%22_platypus_matchbox_label_art_-_from%2C_Collectie_NMvWereldculturen%2C_TM-6477-76%2C_Etiketten_van_luciferdoosjes%2C_1900-1949_%28cropped%29.jpg/405px-%22Nam_Sang_Woo_Safety_Matches%22_platypus_matchbox_label_art_-_from%2C_Collectie_NMvWereldculturen%2C_TM-6477-76%2C_Etiketten_van_luciferdoosjes%2C_1900-1949_%28cropped%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/%22Nam_Sang_Woo_Safety_Matches%22_platypus_matchbox_label_art_-_from%2C_Collectie_NMvWereldculturen%2C_TM-6477-76%2C_Etiketten_van_luciferdoosjes%2C_1900-1949_%28cropped%29.jpg/540px-%22Nam_Sang_Woo_Safety_Matches%22_platypus_matchbox_label_art_-_from%2C_Collectie_NMvWereldculturen%2C_TM-6477-76%2C_Etiketten_van_luciferdoosjes%2C_1900-1949_%28cropped%29.jpg 2x" data-file-width="889" data-file-height="889" /></a></div> <div class="gallerytext">Early 20th-century <a href="/wiki/Matchbox" title="Matchbox">matchbox</a> label</div> </li> <li class="gallerybox" style="width: 216px"> <div class="thumb" style="width: 214px;"><a href="/wiki/File:Australianstamp_1551.jpg" class="mw-file-description" title="9d postage stamp from 1937"><img alt="9d postage stamp from 1937" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b7/Australianstamp_1551.jpg/321px-Australianstamp_1551.jpg" decoding="async" width="214" height="180" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b7/Australianstamp_1551.jpg/482px-Australianstamp_1551.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/b/b7/Australianstamp_1551.jpg 2x" data-file-width="598" data-file-height="503" /></a></div> <div class="gallerytext">9d postage stamp from 1937</div> </li> </ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2></div> <ul><li><a href="/wiki/Henry_Burrell" title="Henry Burrell">Henry Burrell</a></li> <li><a href="/wiki/Ellis_Stanley_Joseph#Platypus_(1922)" title="Ellis Stanley Joseph">Ellis Joseph</a></li> <li><a href="/wiki/Fauna_of_Australia" title="Fauna of Australia">Fauna of Australia</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Footnotes">Footnotes</h2></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width reflist-lower-alpha"> <ol class="references"> <li id="cite_note-24"><a href="#cite_ref-24">^</a> The same root gives rise to <a href="/wiki/Platysma" class="mw-redirect" title="Platysma">platysma</a>, a broad, wide and flat muscle of the neck. </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Citations">Citations</h2></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239543626"><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-iucn-1">^ <a href="#cite_ref-iucn_1-0">a</a> <a href="#cite_ref-iucn_1-1">b</a> <style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output 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Retrieved 26 November 2009.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Variety&rft.atitle=%27Phineas%27+star+Perry+makes+mark+on+auds&rft.date=2009-11-20&rft.au=Littleton%2C+Cynthia&rft_id=https%3A%2F%2Fvariety.com%2F2009%2Fdigital%2Ffeatures%2Fphineas-star-perry-makes-mark-on-auds-1118011690%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3APlatypus" class="Z3988"> </li> <li id="cite_note-146"><a href="#cite_ref-146">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJackson,_John2009" class="citation magazine cs1">Jackson, John (31 March 2009). <a rel="nofollow" class="external text" href="https://www.pastemagazine.com/blogs/lists/2009/03/7-reasons-why-phineas-and-ferb-is-the-best-kids-sh.html">"Five Reasons Why Phineas and Ferb is the Best Kids Show on TV"</a>. <a href="/wiki/Paste_(magazine)" title="Paste (magazine)">Paste</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20191003091539/https://www.pastemagazine.com/blogs/lists/2009/03/7-reasons-why-phineas-and-ferb-is-the-best-kids-sh.html">Archived</a> from the original on 3 October 2019. Retrieved 25 November 2009.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Paste&rft.atitle=Five+Reasons+Why+Phineas+and+Ferb+is+the+Best+Kids+Show+on+TV&rft.date=2009-03-31&rft.au=Jackson%2C+John&rft_id=https%3A%2F%2Fwww.pastemagazine.com%2Fblogs%2Flists%2F2009%2F03%2F7-reasons-why-phineas-and-ferb-is-the-best-kids-sh.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3APlatypus" class="Z3988"> </li> <li id="cite_note-147"><a href="#cite_ref-147">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAnichAnthonyCarlsonGunnelson2021" class="citation journal cs1">Anich, Paula Spaeth; Anthony, Sharon; Carlson, Michaela; Gunnelson, Adam; Kohler, Allison M.; Martin, Jonathan G.; Olson, Erik R. (26 March 2021). "Biofluorescence in the platypus (Ornithorhynchus anatinus)". Mammalia. 85 (2): 179–181. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1515%2Fmammalia-2020-0027">10.1515/mammalia-2020-0027</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Mammalia&rft.atitle=Biofluorescence+in+the+platypus+%28Ornithorhynchus+anatinus%29&rft.volume=85&rft.issue=2&rft.pages=179-181&rft.date=2021-03-26&rft_id=info%3Adoi%2F10.1515%2Fmammalia-2020-0027&rft.aulast=Anich&rft.aufirst=Paula+Spaeth&rft.au=Anthony%2C+Sharon&rft.au=Carlson%2C+Michaela&rft.au=Gunnelson%2C+Adam&rft.au=Kohler%2C+Allison+M.&rft.au=Martin%2C+Jonathan+G.&rft.au=Olson%2C+Erik+R.&rfr_id=info%3Asid%2Fen.wikipedia.org%3APlatypus" class="Z3988"> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="References">References</h2></div> <div class="mw-heading mw-heading3"><h3 id="Books">Books</h3></div> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAugee2001" class="citation encyclopaedia cs1">Augee, Michael L. (2001). "Platypus". World Book Encyclopedia.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Platypus&rft.btitle=World+Book+Encyclopedia&rft.date=2001&rft.aulast=Augee&rft.aufirst=Michael+L.&rfr_id=info%3Asid%2Fen.wikipedia.org%3APlatypus" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBurrell,_Harry1974" class="citation book cs1">Burrell, Harry (1974). The Platypus. Adelaide SA: Rigby. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-85179-521-8" title="Special:BookSources/978-0-85179-521-8"><bdi>978-0-85179-521-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Platypus&rft.place=Adelaide+SA&rft.pub=Rigby&rft.date=1974&rft.isbn=978-0-85179-521-8&rft.au=Burrell%2C+Harry&rfr_id=info%3Asid%2Fen.wikipedia.org%3APlatypus" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFleay,_David_H.1980" class="citation book cs1">Fleay, David H. (1980). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=IaIKAQAAMAAJ">Paradoxical Platypus: Hobnobbing with Duckbills</a>. Jacaranda Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7016-1364-8" title="Special:BookSources/978-0-7016-1364-8"><bdi>978-0-7016-1364-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Paradoxical+Platypus%3A+Hobnobbing+with+Duckbills&rft.pub=Jacaranda+Press&rft.date=1980&rft.isbn=978-0-7016-1364-8&rft.au=Fleay%2C+David+H.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DIaIKAQAAMAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3APlatypus" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGrant,_Tom1995" class="citation book cs1">Grant, Tom (1995). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=FASJWgDhxIsC">The platypus: a unique mammal</a>. Sydney: University of New South Wales Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-86840-143-0" title="Special:BookSources/978-0-86840-143-0"><bdi>978-0-86840-143-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+platypus%3A+a+unique+mammal&rft.place=Sydney&rft.pub=University+of+New+South+Wales+Press&rft.date=1995&rft.isbn=978-0-86840-143-0&rft.au=Grant%2C+Tom&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DFASJWgDhxIsC&rfr_id=info%3Asid%2Fen.wikipedia.org%3APlatypus" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGriffiths,_Mervyn1978" class="citation book cs1">Griffiths, Mervyn (1978). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=1KTwAAAAMAAJ">The Biology of the Monotremes</a>. Academic Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-12-303850-0" title="Special:BookSources/978-0-12-303850-0"><bdi>978-0-12-303850-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Biology+of+the+Monotremes&rft.pub=Academic+Press&rft.date=1978&rft.isbn=978-0-12-303850-0&rft.au=Griffiths%2C+Mervyn&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D1KTwAAAAMAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3APlatypus" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHutch,_MichaelMcDade,_Melissa_C.2004" class="citation encyclopaedia cs1 cs1-prop-long-vol">Hutch, Michael; McDade, Melissa C., eds. (2004). "Grzimek's Animal Life Encyclopedia: Lower metazoans and lesser deuterosomes". Grzimek's Animal Life Encyclopedia. Vol. 12: Mammals III. Gale. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9780787657772" title="Special:BookSources/9780787657772"><bdi>9780787657772</bdi></a>. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/1089554968">1089554968</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Grzimek%27s+Animal+Life+Encyclopedia%3A+Lower+metazoans+and+lesser+deuterosomes&rft.btitle=Grzimek%27s+Animal+Life+Encyclopedia&rft.pub=Gale&rft.date=2004&rft_id=info%3Aoclcnum%2F1089554968&rft.isbn=9780787657772&rfr_id=info%3Asid%2Fen.wikipedia.org%3APlatypus" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMoyal,_Ann_Mozley2004" class="citation book cs1"><a href="/wiki/Ann_Moyal" title="Ann Moyal">Moyal, Ann Mozley</a> (2004). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=5DkezNMhSTYC">Platypus: The Extraordinary Story of How a Curious Creature Baffled the World</a>. Baltimore: The Johns Hopkins University Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-8018-8052-0" title="Special:BookSources/978-0-8018-8052-0"><bdi>978-0-8018-8052-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Platypus%3A+The+Extraordinary+Story+of+How+a+Curious+Creature+Baffled+the+World&rft.place=Baltimore&rft.pub=The+Johns+Hopkins+University+Press&rft.date=2004&rft.isbn=978-0-8018-8052-0&rft.au=Moyal%2C+Ann+Mozley&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D5DkezNMhSTYC&rfr_id=info%3Asid%2Fen.wikipedia.org%3APlatypus" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFStrahanVan_Dyck2006" class="citation book cs1">Strahan, Ronald; Van Dyck, Steve (April 2006). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=N3tFAQAAIAAJ">Mammals of Australia</a> (3rd ed.). New Holland. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-877069-25-3" title="Special:BookSources/978-1-877069-25-3"><bdi>978-1-877069-25-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Mammals+of+Australia&rft.edition=3rd&rft.pub=New+Holland&rft.date=2006-04&rft.isbn=978-1-877069-25-3&rft.aulast=Strahan&rft.aufirst=Ronald&rft.au=Van+Dyck%2C+Steve&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DN3tFAQAAIAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3APlatypus" class="Z3988"></li></ul> <div class="mw-heading mw-heading3"><h3 id="Documentaries">Documentaries</h3></div> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation episode cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20130507073318/http://www.abc.net.au/storm/exposure/default.htm">"Southern Exposure"</a>. Eye of the Storm. 2000. <a href="/wiki/Australian_Broadcasting_Corporation" title="Australian Broadcasting Corporation">Australian Broadcasting Corporation</a>. Archived from <a rel="nofollow" class="external text" href="http://www.abc.net.au/storm/exposure/default.htm">the original</a> on 7 May 2013.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Eye+of+the+Storm&rft.date=2000&rft_id=http%3A%2F%2Fwww.abc.net.au%2Fstorm%2Fexposure%2Fdefault.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3APlatypus" class="Z3988"> DVD <a href="/wiki/EAN_13" class="mw-redirect" title="EAN 13">EAN</a> 9398710245592</li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation episode cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20130228154105/http://www.abc.net.au/storm/nino/default.htm">"El Niño"</a>. Eye of the Storm. 2000. Archived from <a rel="nofollow" class="external text" href="http://www.abc.net.au/storm/nino/default.htm">the original</a> on 28 February 2013.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Eye+of+the+Storm&rft.date=2000&rft_id=http%3A%2F%2Fwww.abc.net.au%2Fstorm%2Fnino%2Fdefault.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3APlatypus" class="Z3988"></li></ul> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 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rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1237033735"><div class="side-box side-box-right plainlinks sistersitebox"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"> <div class="side-box-flex"> <div class="side-box-image"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/df/Wikispecies-logo.svg/34px-Wikispecies-logo.svg.png" decoding="async" width="34" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/df/Wikispecies-logo.svg/51px-Wikispecies-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/df/Wikispecies-logo.svg/68px-Wikispecies-logo.svg.png 2x" data-file-width="941" data-file-height="1103" /></div> <div class="side-box-text plainlist"><a href="/wiki/Wikispecies" title="Wikispecies">Wikispecies</a> has information related to <a href="https://species.wikimedia.org/wiki/Ornithorhynchus_anatinus" class="extiw" title="wikispecies:Ornithorhynchus anatinus">Ornithorhynchus anatinus</a>.</div></div> </div> <ul><li><a rel="nofollow" class="external text" href="https://www.biodiversitylibrary.org/name/Ornithorhynchus_anatinus">Biodiversity Heritage Library bibliography</a> for Ornithorhynchus anatinus</li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20190910215138/http://platypusfacts.net/">Platypus facts</a> (archived 10 September 2019)</li> <li>View the <a rel="nofollow" class="external text" href="http://www.ensembl.org/Ornithorhynchus_anatinus/Info/Index/">platypus genome</a> in <a href="/wiki/Ensembl" class="mw-redirect" title="Ensembl">Ensembl</a></li> <li><a rel="nofollow" class="external text" href="https://www.pbs.org/video/the-platypus-guardian-axzeo8/">PBS Nature "The Platypus Guardian"</a></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist 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.navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Mammalia" title="Template:Mammalia"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Mammalia" title="Template talk:Mammalia"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Mammalia" title="Special:EditPage/Template:Mammalia"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Mammalia" style="font-size:114%;margin:0 4em"><a href="/wiki/Mammal" title="Mammal">Mammalia</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="*_Kingdom:_Animalia_*_Phylum:_Chordata_*_Clade:_Synapsida_*_Clade:_Therapsida_*_Clade:_Cynodontia_*_Clade:_Mammaliaformes" style="font-size:114%;margin:0 4em"> <ul><li>Kingdom: <a href="/wiki/Animal" title="Animal">Animalia</a></li> <li>Phylum: <a href="/wiki/Chordate" title="Chordate">Chordata</a></li> <li>Clade: <a href="/wiki/Synapsida" title="Synapsida">Synapsida</a></li> <li>Clade: <a href="/wiki/Therapsid" class="mw-redirect" title="Therapsid">Therapsida</a></li> <li>Clade: <a href="/wiki/Cynodont" class="mw-redirect" title="Cynodont">Cynodontia</a></li> <li>Clade: <a href="/wiki/Mammaliaformes" title="Mammaliaformes">Mammaliaformes</a></li></ul> </div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Synapsida" scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Synapsida" title="Synapsida">Synapsida</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><ul><li>see <a href="/wiki/Template:Synapsida" title="Template:Synapsida">Synapsida</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Cynodont" class="mw-redirect" title="Cynodont">Cynodontia</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><ul><li>see <a href="/wiki/Template:Cynodontia" title="Template:Cynodontia">Cynodontia</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Mammal" title="Mammal">Mammalia</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><ul><li>see below↓</li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible uncollapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="3"><div id="Mammalia" style="font-size:114%;margin:0 4em"><a href="/wiki/Mammal" title="Mammal">Mammalia</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Australosphenida?" scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Australosphenida" title="Australosphenida">Australosphenida</a>?</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Ambondro_mahabo" title="Ambondro mahabo">Ambondro</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Tendagurutherium&action=edit&redlink=1" class="new" title="Tendagurutherium (page does not exist)">Tendagurutherium</a>?</li> <li><a href="/wiki/Monotreme" title="Monotreme">Monotremata</a>?</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Henosferidae" title="Henosferidae">Henosferidae</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Asfaltomylos" title="Asfaltomylos">Asfaltomylos</a></li> <li><a href="/wiki/Henosferus" title="Henosferus">Henosferus</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Ausktribosphenidae" title="Ausktribosphenidae">Ausktribosphenidae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ausktribosphenos" title="Ausktribosphenos">Ausktribosphenos</a></li> <li><a href="/wiki/Bishops_(mammal)" class="mw-redirect" title="Bishops (mammal)">Bishops</a>?</li> <li><a href="/w/index.php?title=Kryoparvus&action=edit&redlink=1" class="new" title="Kryoparvus (page does not exist)">Kryoparvus</a>?</li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Monotreme" title="Monotreme">Monotremata</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Kollikodontidae" title="Kollikodontidae">Kollikodontidae</a>?</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Kollikodon" title="Kollikodon">Kollikodon</a></li> <li><a href="/wiki/Kryoryctes" title="Kryoryctes">Kryoryctes</a>?</li> <li><a href="/wiki/Sundrius" title="Sundrius">Sundrius</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Steropodontidae" title="Steropodontidae">Steropodontidae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Parvopalus" title="Parvopalus">Parvopalus</a>?</li> <li><a href="/wiki/Steropodon" title="Steropodon">Steropodon</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Teinolophidae" title="Teinolophidae">Teinolophidae</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Stirtodon" title="Stirtodon">Stirtodon</a>?</li> <li><a href="/wiki/Teinolophos" title="Teinolophos">Teinolophos</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Ornithorhynchoidea" title="Ornithorhynchoidea">Ornithorhynchoidea</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Opalios" title="Opalios">Opalios</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Ornithorhynchidae" title="Ornithorhynchidae">Ornithorhynchidae</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Dharragarra" title="Dharragarra">Dharragarra</a>?</li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Monotrematum" title="Monotrematum">Monotrematum</a>?</li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Obdurodon" title="Obdurodon">Obdurodon</a></li> <li><a class="mw-selflink selflink">Ornithorhynchus</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Patagorhynchus" title="Patagorhynchus">Patagorhynchus</a>?</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Echidna" title="Echidna">Tachyglossidae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Megalibgwilia" title="Megalibgwilia">Megalibgwilia</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Murrayglossus" title="Murrayglossus">Murrayglossus</a></li> <li><a href="/wiki/Short-beaked_echidna" title="Short-beaked echidna">Tachyglossus</a></li> <li><a href="/wiki/Long-beaked_echidna" title="Long-beaked echidna">Zaglossus</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Allotheria" title="Allotheria">Allotheria</a>?</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><ul><li>see <a href="/wiki/Template:Allotheria" title="Template:Allotheria">Allotheria</a></li> <li>includes <a href="/wiki/Multituberculata" title="Multituberculata">multituberculates</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Theriimorpha" title="Theriimorpha">Theriimorpha</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><ul><li>see below↓</li></ul></li></ul> </div></td></tr></tbody></table><div></div></td><td class="noviewer navbox-image" rowspan="1" style="width:1px;padding:0 0 0 2px"><div><a href="/wiki/File:Genera_mammalium_Ornithorhynchus_anatinus.jpg" class="mw-file-description" title="Ornithorhynchus anatinus"><img alt="Ornithorhynchus anatinus" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2e/Genera_mammalium_Ornithorhynchus_anatinus.jpg/120px-Genera_mammalium_Ornithorhynchus_anatinus.jpg" decoding="async" width="120" height="35" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2e/Genera_mammalium_Ornithorhynchus_anatinus.jpg/180px-Genera_mammalium_Ornithorhynchus_anatinus.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2e/Genera_mammalium_Ornithorhynchus_anatinus.jpg/240px-Genera_mammalium_Ornithorhynchus_anatinus.jpg 2x" data-file-width="1624" data-file-height="478" /></a> <a href="/wiki/File:Tachyglossus_aculeatus-Cayley.jpg" class="mw-file-description" title="Tachyglossus aculeatus"><img alt="Tachyglossus aculeatus" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/49/Tachyglossus_aculeatus-Cayley.jpg/120px-Tachyglossus_aculeatus-Cayley.jpg" decoding="async" width="120" height="81" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/49/Tachyglossus_aculeatus-Cayley.jpg/180px-Tachyglossus_aculeatus-Cayley.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/49/Tachyglossus_aculeatus-Cayley.jpg/240px-Tachyglossus_aculeatus-Cayley.jpg 2x" data-file-width="500" data-file-height="337" /></a></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="3"><div id="Theriimorpha" style="font-size:114%;margin:0 4em"><a href="/wiki/Theriimorpha" title="Theriimorpha">Theriimorpha</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Theriimorpha" scope="row" class="navbox-group" style="width:1%"><div style="position: absolute; transform: translate(-50%,-50%) rotate(270deg);"><a href="/wiki/Theriimorpha" title="Theriimorpha">Theriimorpha</a></div></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Acinacodus" title="Acinacodus">Acinacodus</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Amphidon" title="Amphidon">Amphidon</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Amphilestes" title="Amphilestes">Amphilestes</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Aploconodon" title="Aploconodon">Aploconodon</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Chaoyangodens" title="Chaoyangodens">Chaoyangodens</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Comodon" title="Comodon">Comodon</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Condorodon" title="Condorodon">Condorodon</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Dyskritodon" title="Dyskritodon">Dyskritodon</a>?</li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Fruitafossor" title="Fruitafossor">Fruitafossor</a>?</li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Hakusanodon&action=edit&redlink=1" class="new" title="Hakusanodon (page does not exist)">Hakusanodon</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Indotriconodon" title="Indotriconodon">Indotriconodon</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Juchilestes" title="Juchilestes">Juchilestes</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Jueconodon&action=edit&redlink=1" class="new" title="Jueconodon (page does not exist)">Jueconodon</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Kemchugia&action=edit&redlink=1" class="new" title="Kemchugia (page does not exist)">Kemchugia</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Kryptotherium&action=edit&redlink=1" class="new" title="Kryptotherium (page does not exist)">Kryptotherium</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Liaoconodon" title="Liaoconodon">Liaoconodon</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Liaotherium&action=edit&redlink=1" class="new" title="Liaotherium (page does not exist)">Liaotherium</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Manchurodon&action=edit&redlink=1" class="new" title="Manchurodon (page does not exist)">Manchurodon</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Nakunodon&action=edit&redlink=1" class="new" title="Nakunodon (page does not exist)">Nakunodon</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Phascolotherium" title="Phascolotherium">Phascolotherium</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Sangarotherium" title="Sangarotherium">Sangarotherium</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Tendagurodon&action=edit&redlink=1" class="new" title="Tendagurodon (page does not exist)">Tendagurodon</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Allotheria" title="Allotheria">Allotheria</a>?</li> <li><a href="/wiki/Monotreme" title="Monotreme">Monotremata</a>?</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Gobiconodontidae" title="Gobiconodontidae">Gobiconodontidae</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/w/index.php?title=Fuxinoconodon&action=edit&redlink=1" class="new" title="Fuxinoconodon (page does not exist)">Fuxinoconodon</a></li> <li><a href="/wiki/Gobiconodon" title="Gobiconodon">Gobiconodon</a></li> <li><a href="/w/index.php?title=Hangjinia&action=edit&redlink=1" class="new" title="Hangjinia (page does not exist)">Hangjinia</a></li> <li><a href="/w/index.php?title=Huasteconodon&action=edit&redlink=1" class="new" title="Huasteconodon (page does not exist)">Huasteconodon</a>?</li> <li><a href="/w/index.php?title=Meemannodon&action=edit&redlink=1" class="new" title="Meemannodon (page does not exist)">Meemannodon</a></li> <li><a href="/wiki/Repenomamus" title="Repenomamus">Repenomamus</a></li> <li><a href="/wiki/Spinolestes" title="Spinolestes">Spinolestes</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Jeholodentidae" title="Jeholodentidae">Jeholodentidae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Jeholodens" title="Jeholodens">Jeholodens</a></li> <li><a href="/wiki/Yanoconodon" title="Yanoconodon">Yanoconodon</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Klameliidae" title="Klameliidae">Klameliidae</a>?</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/w/index.php?title=Ferganodon&action=edit&redlink=1" class="new" title="Ferganodon (page does not exist)">Ferganodon</a></li> <li><a href="/w/index.php?title=Klamelia&action=edit&redlink=1" class="new" title="Klamelia (page does not exist)">Klamelia</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Triconodontidae" title="Triconodontidae">Triconodontidae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Alticonodon" title="Alticonodon">Alticonodon</a></li> <li><a href="/w/index.php?title=Arundelconodon&action=edit&redlink=1" class="new" title="Arundelconodon (page does not exist)">Arundelconodon</a></li> <li><a href="/wiki/Astroconodon" title="Astroconodon">Astroconodon</a></li> <li><a href="/w/index.php?title=Corviconodon&action=edit&redlink=1" class="new" title="Corviconodon (page does not exist)">Corviconodon</a></li> <li><a href="/wiki/Eotriconodon" title="Eotriconodon">Eotriconodon</a></li> <li><a href="/wiki/Jugulator_amplissimus" title="Jugulator amplissimus">Jugulator</a></li> <li><a href="/wiki/Meiconodon" title="Meiconodon">Meiconodon</a></li> <li><a href="/wiki/Priacodon" title="Priacodon">Priacodon</a></li> <li><a href="/wiki/Triconodon" title="Triconodon">Triconodon</a></li> <li><a href="/wiki/Trioracodon" title="Trioracodon">Trioracodon</a></li> <li><a href="/w/index.php?title=Victoriaconodon&action=edit&redlink=1" class="new" title="Victoriaconodon (page does not exist)">Victoriaconodon</a></li> <li><a href="/wiki/Volaticotherini" title="Volaticotherini">Volaticotheria</a>?</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Volaticotherini" title="Volaticotherini">Volaticotheria</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Argentoconodon" title="Argentoconodon">Argentoconodon</a></li> <li><a href="/wiki/Ichthyoconodon" title="Ichthyoconodon">Ichthyoconodon</a></li> <li><a href="/wiki/Triconolestes" title="Triconolestes">Triconolestes</a>?</li> <li><a href="/wiki/Volaticotherium" title="Volaticotherium">Volaticotherium</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Tinodontidae" title="Tinodontidae">Tinodontidae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/w/index.php?title=Gobiotheriodon&action=edit&redlink=1" class="new" title="Gobiotheriodon (page does not exist)">Gobiotheriodon</a>?</li> <li><a href="/wiki/Tinodon" title="Tinodon">Tinodon</a></li> <li><a href="/w/index.php?title=Trishulotherium&action=edit&redlink=1" class="new" title="Trishulotherium (page does not exist)">Trishulotherium</a></li> <li><a href="/w/index.php?title=Yermakia&action=edit&redlink=1" class="new" title="Yermakia (page does not exist)">Yermakia</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Trechnotheria" title="Trechnotheria">Trechnotheria</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Monotreme" title="Monotreme">Monotremata</a>?</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Zhangheotheriidae" title="Zhangheotheriidae">Zhangheotheriidae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/w/index.php?title=Anebodon&action=edit&redlink=1" class="new" title="Anebodon (page does not exist)">Anebodon</a></li> <li><a href="/w/index.php?title=Kiyatherium&action=edit&redlink=1" class="new" title="Kiyatherium (page does not exist)">Kiyatherium</a></li> <li><a href="/wiki/Maotherium" title="Maotherium">Maotherium</a></li> <li><a href="/w/index.php?title=Ningchengodon&action=edit&redlink=1" class="new" title="Ningchengodon (page does not exist)">Ningchengodon</a></li> <li><a href="/w/index.php?title=Origolestes&action=edit&redlink=1" class="new" title="Origolestes (page does not exist)">Origolestes</a></li> <li><a href="/wiki/Zhangheotherium" title="Zhangheotherium">Zhangheotherium</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Spalacotheriidae" title="Spalacotheriidae">Spalacotheriidae</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Akidolestes" title="Akidolestes">Akidolestes</a></li> <li><a href="/w/index.php?title=Aliaga_(mammal)&action=edit&redlink=1" class="new" title="Aliaga (mammal) (page does not exist)">Aliaga</a></li> <li><a href="/w/index.php?title=Cifellitherium&action=edit&redlink=1" class="new" title="Cifellitherium (page does not exist)">Cifellitherium</a></li> <li><a href="/w/index.php?title=Heishanlestes&action=edit&redlink=1" class="new" title="Heishanlestes (page does not exist)">Heishanlestes</a></li> <li><a href="/w/index.php?title=Infernolestes&action=edit&redlink=1" class="new" title="Infernolestes (page does not exist)">Infernolestes</a></li> <li><a href="/w/index.php?title=Lactodens&action=edit&redlink=1" class="new" title="Lactodens (page does not exist)">Lactodens</a></li> <li><a href="/w/index.php?title=Shalbaatar&action=edit&redlink=1" class="new" title="Shalbaatar (page does not exist)">Shalbaatar</a></li> <li><a href="/w/index.php?title=Spalacolestes&action=edit&redlink=1" class="new" title="Spalacolestes (page does not exist)">Spalacolestes</a></li> <li><a href="/w/index.php?title=Spalacotheridium&action=edit&redlink=1" class="new" title="Spalacotheridium (page does not exist)">Spalacotheridium</a></li> <li><a href="/wiki/Spalacotherium" title="Spalacotherium">Spalacotherium</a></li> <li><a href="/w/index.php?title=Spalacotheroides&action=edit&redlink=1" class="new" title="Spalacotheroides (page does not exist)">Spalacotheroides</a></li> <li><a href="/w/index.php?title=Symmetrodontoides&action=edit&redlink=1" class="new" title="Symmetrodontoides (page does not exist)">Symmetrodontoides</a></li> <li><a href="/wiki/Symmetrolestes" title="Symmetrolestes">Symmetrolestes</a></li> <li><a href="/wiki/Yaverlestes" title="Yaverlestes">Yaverlestes</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Cladotheria" title="Cladotheria">Cladotheria</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><ul><li>see below↓</li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td><td class="noviewer navbox-image" rowspan="1" style="width:1px;padding:0 0 0 2px"><div><a href="/wiki/File:Repenomamus_BW.jpg" class="mw-file-description" title="Repenomamus robustus"><img alt="Repenomamus robustus" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bd/Repenomamus_BW.jpg/120px-Repenomamus_BW.jpg" decoding="async" width="120" height="82" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bd/Repenomamus_BW.jpg/180px-Repenomamus_BW.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/bd/Repenomamus_BW.jpg/240px-Repenomamus_BW.jpg 2x" data-file-width="800" data-file-height="546" /></a> <a href="/wiki/File:Volaticotherium_Life_Reconstruction.png" class="mw-file-description" title="Volaticotherium antiquum"><img alt="Volaticotherium antiquum" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/55/Volaticotherium_Life_Reconstruction.png/120px-Volaticotherium_Life_Reconstruction.png" decoding="async" width="120" height="118" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/55/Volaticotherium_Life_Reconstruction.png/180px-Volaticotherium_Life_Reconstruction.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/55/Volaticotherium_Life_Reconstruction.png/240px-Volaticotherium_Life_Reconstruction.png 2x" data-file-width="1384" data-file-height="1359" /></a></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="3"><div id="Cladotheria" style="font-size:114%;margin:0 4em"><a href="/wiki/Cladotheria" title="Cladotheria">Cladotheria</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Dryolestida" title="Dryolestida">Dryolestida</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Brancatherulum" title="Brancatherulum">Brancatherulum</a>?</li> <li><a href="/wiki/Dorsetodon" title="Dorsetodon">Dorsetodon</a></li> <li><a href="/wiki/Drescheratherium" title="Drescheratherium">Drescheratherium</a></li> <li><a href="/wiki/Euthlastus" title="Euthlastus">Euthlastus</a></li> <li><a href="/wiki/Henkelotherium" title="Henkelotherium">Henkelotherium</a></li> <li><a href="/wiki/Paurodon" title="Paurodon">Paurodon</a></li> <li><a href="/wiki/Tathiodon" title="Tathiodon">Tathiodon</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Dryolestidae" title="Dryolestidae">Dryolestidae</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Achyrodon" title="Achyrodon">Achyrodon</a></li> <li><a href="/wiki/Amblotherium" title="Amblotherium">Amblotherium</a></li> <li><a href="/w/index.php?title=Anthracolestes&action=edit&redlink=1" class="new" title="Anthracolestes (page does not exist)">Anthracolestes</a></li> <li><a href="/w/index.php?title=Beckumia&action=edit&redlink=1" class="new" title="Beckumia (page does not exist)">Beckumia</a></li> <li><a href="/wiki/Crusafontia" title="Crusafontia">Crusafontia</a></li> <li><a href="/wiki/Dryolestes" title="Dryolestes">Dryolestes</a></li> <li><a href="/wiki/Groebertherium" title="Groebertherium">Groebertherium</a>?</li> <li><a href="/w/index.php?title=Guimarotodus&action=edit&redlink=1" class="new" title="Guimarotodus (page does not exist)">Guimarotodus</a></li> <li><a href="/w/index.php?title=Hercynodon&action=edit&redlink=1" class="new" title="Hercynodon (page does not exist)">Hercynodon</a></li> <li><a href="/w/index.php?title=Krebsotherium&action=edit&redlink=1" class="new" title="Krebsotherium (page does not exist)">Krebsotherium</a></li> <li><a href="/w/index.php?title=Lakotalestes&action=edit&redlink=1" class="new" title="Lakotalestes (page does not exist)">Lakotalestes</a>?</li> <li><a href="/wiki/Laolestes" title="Laolestes">Laolestes</a></li> <li><a href="/w/index.php?title=Minutolestes&action=edit&redlink=1" class="new" title="Minutolestes (page does not exist)">Minutolestes</a></li> <li><a href="/wiki/Phascolestes" title="Phascolestes">Phascolestes</a></li> <li><a href="/w/index.php?title=Portopinheirodon&action=edit&redlink=1" class="new" title="Portopinheirodon (page does not exist)">Portopinheirodon</a></li> <li><a href="/w/index.php?title=Treslagosodon&action=edit&redlink=1" class="new" title="Treslagosodon (page does not exist)">Treslagosodon</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Meridiolestida" title="Meridiolestida">Meridiolestida</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/w/index.php?title=Amarillodon&action=edit&redlink=1" class="new" title="Amarillodon (page does not exist)">Amarillodon</a></li> <li><a href="/wiki/Austrotriconodon" title="Austrotriconodon">Austrotriconodon</a></li> <li><a href="/w/index.php?title=Bondesius&action=edit&redlink=1" class="new" title="Bondesius (page does not exist)">Bondesius</a></li> <li><a href="/w/index.php?title=Casamiquelia&action=edit&redlink=1" class="new" title="Casamiquelia (page does not exist)">Casamiquelia</a></li> <li><a href="/wiki/Cronopio_dentiacutus" title="Cronopio dentiacutus">Cronopio</a></li> <li><a href="/wiki/Groebertherium" title="Groebertherium">Groebertherium</a>?</li> <li><a href="/w/index.php?title=Lakotalestes&action=edit&redlink=1" class="new" title="Lakotalestes (page does not exist)">Lakotalestes</a>?</li> <li><a href="/wiki/Leonardus" title="Leonardus">Leonardus</a></li> <li><a href="/wiki/Necrolestes" title="Necrolestes">Necrolestes</a></li> <li><a href="/w/index.php?title=Paraungulatum&action=edit&redlink=1" class="new" title="Paraungulatum (page does not exist)">Paraungulatum</a></li> <li><a href="/w/index.php?title=Quirogatherium&action=edit&redlink=1" class="new" title="Quirogatherium (page does not exist)">Quirogatherium</a></li> <li><a href="/w/index.php?title=Solanutherium&action=edit&redlink=1" class="new" title="Solanutherium (page does not exist)">Solanutherium</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Mesungulatoidea" class="mw-redirect" title="Mesungulatoidea">Mesungulatoidea</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Coloniatherium" title="Coloniatherium">Coloniatherium</a></li> <li><a href="/w/index.php?title=Mesungulatum&action=edit&redlink=1" class="new" title="Mesungulatum (page does not exist)">Mesungulatum</a></li> <li><a href="/wiki/Orretherium" title="Orretherium">Orretherium</a></li> <li><a href="/wiki/Peligrotherium" title="Peligrotherium">Peligrotherium</a></li> <li><a href="/wiki/Reigitherium" title="Reigitherium">Reigitherium</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Donodontidae" title="Donodontidae">Donodontidae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/w/index.php?title=Amazighodon&action=edit&redlink=1" class="new" title="Amazighodon (page does not exist)">Amazighodon</a></li> <li><a href="/w/index.php?title=Anoualestes&action=edit&redlink=1" class="new" title="Anoualestes (page does not exist)">Anoualestes</a></li> <li><a href="/wiki/Donodon" title="Donodon">Donodon</a></li> <li><a href="/w/index.php?title=Stylodens&action=edit&redlink=1" class="new" title="Stylodens (page does not exist)">Stylodens</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><div style="position: absolute; transform: translate(-50%,-50%) rotate(270deg);"><a href="/wiki/Prototribosphenida" class="mw-redirect" title="Prototribosphenida">Prototribosphenida</a></div></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Abelodon" title="Abelodon">Abelodon</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Amphibetulimus&action=edit&redlink=1" class="new" title="Amphibetulimus (page does not exist)">Amphibetulimus</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Amphitherium" title="Amphitherium">Amphitherium</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Arguimus&action=edit&redlink=1" class="new" title="Arguimus (page does not exist)">Arguimus</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Brancatherulum" title="Brancatherulum">Brancatherulum</a>?</li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Chunnelodon" title="Chunnelodon">Chunnelodon</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Magnimus" title="Magnimus">Magnimus</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Minimus_(mammal)&action=edit&redlink=1" class="new" title="Minimus (mammal) (page does not exist)">Minimus</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Mozomus&action=edit&redlink=1" class="new" title="Mozomus (page does not exist)">Mozomus</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Nanolestes" title="Nanolestes">Nanolestes</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Palaeoxonodon" title="Palaeoxonodon">Palaeoxonodon</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Vincelestes" title="Vincelestes">Vincelestes</a></li> <li><a href="/wiki/Monotreme" title="Monotreme">Monotremata</a>?</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Peramuridae" title="Peramuridae">Peramuridae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/w/index.php?title=Afriquiamus&action=edit&redlink=1" class="new" title="Afriquiamus (page does not exist)">Afriquiamus</a>?</li> <li><a href="/wiki/Kouriogenys" title="Kouriogenys">Kouriogenys</a></li> <li><a href="/wiki/Peramuroides" title="Peramuroides">Peramuroides</a></li> <li><a href="/wiki/Peramus" title="Peramus">Peramus</a></li> <li><a href="/w/index.php?title=Tendagurutherium&action=edit&redlink=1" class="new" title="Tendagurutherium (page does not exist)">Tendagurutherium</a>?</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Tribosphenida" title="Tribosphenida">Tribosphenida / Boreosphenida</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Aegialodon" title="Aegialodon">Aegialodon</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Argaliatherium&action=edit&redlink=1" class="new" title="Argaliatherium (page does not exist)">Argaliatherium</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Brasilestes" title="Brasilestes">Brasilestes</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Carinalestes&action=edit&redlink=1" class="new" title="Carinalestes (page does not exist)">Carinalestes</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Eomaia" title="Eomaia">Eomaia</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Holoclemensia" title="Holoclemensia">Holoclemensia</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Hypomylos&action=edit&redlink=1" class="new" title="Hypomylos (page does not exist)">Hypomylos</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Juramaia" title="Juramaia">Juramaia</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Kermackia&action=edit&redlink=1" class="new" title="Kermackia (page does not exist)">Kermackia</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Kielantherium&action=edit&redlink=1" class="new" title="Kielantherium (page does not exist)">Kielantherium</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Pappotherium" title="Pappotherium">Pappotherium</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Picopsis&action=edit&redlink=1" class="new" title="Picopsis (page does not exist)">Picopsis</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Tirotherium&action=edit&redlink=1" class="new" title="Tirotherium (page does not exist)">Tirotherium</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Tribactonodon&action=edit&redlink=1" class="new" title="Tribactonodon (page does not exist)">Tribactonodon</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Theria" title="Theria">Theria</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Patagomaia" title="Patagomaia">Patagomaia</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Eutheria" title="Eutheria">Eutheria</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><ul><li>see <a href="/wiki/Template:Eutheria" title="Template:Eutheria">Eutheria</a></li> <li>includes <a href="/wiki/Placentalia" title="Placentalia">placentals</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Metatheria" title="Metatheria">Metatheria</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><ul><li>see <a href="/wiki/Template:Metatheria" title="Template:Metatheria">Metatheria</a></li> <li>includes <a href="/wiki/Marsupial" title="Marsupial">marsupials</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td><td class="noviewer navbox-image" rowspan="1" style="width:1px;padding:0 0 0 2px"><div><a href="/wiki/File:Cronopio_NT.jpg" class="mw-file-description" title="Cronopio dentiacutus"><img alt="Cronopio dentiacutus" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/49/Cronopio_NT.jpg/100px-Cronopio_NT.jpg" decoding="async" width="100" height="75" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/49/Cronopio_NT.jpg/150px-Cronopio_NT.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/49/Cronopio_NT.jpg/200px-Cronopio_NT.jpg 2x" data-file-width="500" data-file-height="375" /></a> <a href="/wiki/File:Eomaia_NT.jpg" class="mw-file-description" title="Eomaia scansoria"><img alt="Eomaia scansoria" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/37/Eomaia_NT.jpg/120px-Eomaia_NT.jpg" decoding="async" width="120" height="53" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/37/Eomaia_NT.jpg/180px-Eomaia_NT.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/37/Eomaia_NT.jpg/240px-Eomaia_NT.jpg 2x" data-file-width="600" data-file-height="265" /></a></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Other_taxa" style="font-size:114%;margin:0 4em">Other taxa</div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Incertae_sedis" title="Incertae sedis">Incertae sedis</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Atlasodon&action=edit&redlink=1" class="new" title="Atlasodon (page does not exist)">Atlasodon</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Chronoperates" title="Chronoperates">Chronoperates</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Microderson&action=edit&redlink=1" class="new" title="Microderson (page does not exist)">Microderson</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Thereuodon" title="Thereuodon">Thereuodon</a></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Tingamarra" title="Tingamarra">Tingamarra</a></li> <li><a href="/wiki/Saint_Bathans_Mammal" class="mw-redirect" title="Saint Bathans Mammal">Saint Bathans Mammal</a></li> <li><a href="/wiki/UA_8699" title="UA 8699">UA 8699</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other taxa</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Prototheria" title="Prototheria">Prototheria</a></li> <li><a href="/wiki/Yinotheria" title="Yinotheria">Yinotheria</a></li> <li><a href="/wiki/Eutriconodonta" title="Eutriconodonta">Eutriconodonta</a></li> <li><a href="/wiki/Amphilestidae" title="Amphilestidae">Amphilestidae</a></li> <li><a href="/wiki/Theriiformes" title="Theriiformes">Theriiformes</a></li> <li><a href="/wiki/Pantotheria" title="Pantotheria">Pantotheria</a></li> <li><a href="/wiki/Symmetrodonta" title="Symmetrodonta">Symmetrodonta</a></li> <li><a href="/wiki/Eupantotheria" class="mw-redirect" title="Eupantotheria">Eupantotheria</a></li> <li><a href="/wiki/Paurodontidae" title="Paurodontidae">Paurodontidae</a></li> <li><a href="/wiki/Amphitheriidae" title="Amphitheriidae">Amphitheriidae</a></li> <li><a href="/wiki/Marsupionta" title="Marsupionta">Marsupionta</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"><style data-mw-deduplicate="TemplateStyles:r886047488">.mw-parser-output .nobold{font-weight:normal}</style></div><div role="navigation" class="navbox" aria-labelledby="Extant_Monotremata_species_by_family" style="padding:3px"><table class="nowraplinks hlist mw-collapsible mw-collapsed navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Monotremata" title="Template:Monotremata"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Monotremata" title="Template talk:Monotremata"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Monotremata" title="Special:EditPage/Template:Monotremata"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Extant_Monotremata_species_by_family" style="font-size:114%;margin:0 4em">Extant <a href="/wiki/Monotreme" title="Monotreme">Monotremata</a> species by family</div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li>Kingdom <a href="/wiki/Animal" title="Animal">Animalia</a></li> <li>Phylum <a href="/wiki/Chordate" title="Chordate">Chordata</a></li> <li>Class <a href="/wiki/Mammal" title="Mammal">Mammalia</a></li> <li>(unranked) <a href="/wiki/Australosphenida" title="Australosphenida">Australosphenida</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Echidna" title="Echidna">Tachyglossidae</a> (Echidnas)</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:11em"><a href="/wiki/Short-beaked_echidna" title="Short-beaked echidna">Tachyglossus</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Short-beaked_echidna" title="Short-beaked echidna">Short-beaked echidna (T. aculeatus)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:11em"><a href="/wiki/Long-beaked_echidna" title="Long-beaked echidna">Zaglossus</a> (Long-beaked echidnas)</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Zaglossus_attenboroughi" title="Zaglossus attenboroughi">Attenborough's long-beaked echidna (Z. attenboroughi)</a></li> <li><a href="/wiki/Eastern_long-beaked_echidna" title="Eastern long-beaked echidna">Eastern long-beaked echidna (Z. bartoni)</a></li> <li><a href="/wiki/Western_long-beaked_echidna" title="Western long-beaked echidna">Western long-beaked echidna (Z. bruijni)</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Ornithorhynchidae" title="Ornithorhynchidae">Ornithorhynchidae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Ornithorhynchus" scope="row" class="navbox-group" style="width:11em"><a class="mw-selflink selflink">Ornithorhynchus</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a class="mw-selflink selflink">Platypus (O. anatinus)</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div><a href="/wiki/Category:Monotremes" title="Category:Monotremes">Category</a></div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Taxon_identifiers" style="padding:3px"><table class="nowraplinks hlist navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Taxon_identifiers" style="font-size:114%;margin:0 4em"><a href="/wiki/Help:Taxon_identifiers" title="Help:Taxon identifiers">Taxon identifiers</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align: left;">Ornithorhynchus anatinus</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Wikidata" title="Wikidata">Wikidata</a>: <a href="https://www.wikidata.org/wiki/Q15343" class="extiw" title="wikidata:Q15343">Q15343</a></li> <li><a href="/wiki/Wikispecies" title="Wikispecies">Wikispecies</a>: <a href="https://species.wikimedia.org/wiki/Ornithorhynchus_anatinus" class="extiw" title="wikispecies:Ornithorhynchus anatinus">Ornithorhynchus anatinus</a></li> <li><a href="/wiki/Animal_Diversity_Web" title="Animal Diversity Web">ADW</a>: <a rel="nofollow" class="external text" href="https://animaldiversity.org/accounts/Ornithorhynchus_anatinus/">Ornithorhynchus_anatinus</a></li> <li><a href="/wiki/Australian_Faunal_Directory" title="Australian Faunal Directory">AFD</a>: <a rel="nofollow" class="external text" href="https://biodiversity.org.au/afd/taxa/Ornithorhynchus_anatinus">Ornithorhynchus_anatinus</a></li> <li><a href="/wiki/ARKive" title="ARKive">ARKive</a>: <a rel="nofollow" class="external text" href="https://web.archive.org/web/*/http://www.arkive.org/wd/platypus/ornithorhynchus-anatinus/">ornithorhynchus-anatinus</a></li> <li><a href="/wiki/Barcode_of_Life_Data_System" title="Barcode of Life Data System">BOLD</a>: <a rel="nofollow" class="external text" href="http://www.boldsystems.org/index.php/TaxBrowser_TaxonPage?taxid=27252">27252</a></li> <li><a href="/wiki/Catalogue_of_Life" title="Catalogue of Life">CoL</a>: <a rel="nofollow" class="external text" href="https://www.catalogueoflife.org/data/taxon/74WBV">74WBV</a></li> <li><a href="/wiki/Encyclopedia_of_Life" title="Encyclopedia of Life">EoL</a>: <a rel="nofollow" class="external text" href="https://eol.org/pages/323858">323858</a></li> <li><a href="/wiki/Global_Biodiversity_Information_Facility" title="Global Biodiversity Information Facility">GBIF</a>: <a rel="nofollow" class="external text" href="https://www.gbif.org/species/2433376">2433376</a></li> <li><a href="/wiki/INaturalist" title="INaturalist">iNaturalist</a>: <a rel="nofollow" class="external text" href="https://inaturalist.org/taxa/43236">43236</a></li> <li><a href="/wiki/Interim_Register_of_Marine_and_Nonmarine_Genera" title="Interim Register of Marine and Nonmarine Genera">IRMNG</a>: <a rel="nofollow" class="external text" href="https://www.irmng.org/aphia.php?p=taxdetails&id=10218352">10218352</a></li> <li><a href="/wiki/Integrated_Taxonomic_Information_System" title="Integrated Taxonomic Information System">ITIS</a>: <a rel="nofollow" class="external text" href="https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=552524">552524</a></li> <li><a href="/wiki/IUCN_Red_List" title="IUCN Red List">IUCN</a>: <a rel="nofollow" class="external text" href="https://apiv3.iucnredlist.org/api/v3/taxonredirect/40488">40488</a></li> <li><a href="/wiki/American_Society_of_Mammalogists#Mammal_Diversity_Database" title="American Society of Mammalogists">MDD</a>: <a rel="nofollow" class="external text" href="https://www.mammaldiversity.org/taxon/1000001">1000001</a></li> <li><a href="/wiki/Mammal_Species_of_the_World" title="Mammal Species of the World">MSW</a>: <a rel="nofollow" class="external text" href="https://www.departments.bucknell.edu/biology/resources/msw3/browse.asp?s=y&id=10300020">10300020</a></li> <li><a href="/wiki/National_Center_for_Biotechnology_Information" title="National Center for Biotechnology Information">NCBI</a>: <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&id=9258">9258</a></li> <li><a href="/wiki/Observation.org" title="Observation.org">Observation.org</a>: <a rel="nofollow" class="external text" href="https://observation.org/species/86112/">86112</a></li> <li><a href="/wiki/Open_Tree_of_Life" title="Open Tree of Life">Open Tree of Life</a>: <a rel="nofollow" class="external text" href="https://tree.opentreeoflife.org/taxonomy/browse?id=962377">962377</a></li> <li><a href="/wiki/Paleobiology_Database" title="Paleobiology Database">Paleobiology Database</a>: <a rel="nofollow" class="external text" href="https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=166835">166835</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align: left;">Platypus anatinus</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Wikidata" title="Wikidata">Wikidata</a>: <a href="https://www.wikidata.org/wiki/Q125495145" class="extiw" title="wikidata:Q125495145">Q125495145</a></li> <li><a href="/wiki/Global_Biodiversity_Information_Facility" title="Global Biodiversity Information Facility">GBIF</a>: <a rel="nofollow" class="external text" href="https://www.gbif.org/species/5816567">5816567</a></li> <li><a href="/wiki/ZooBank" title="ZooBank">ZooBank</a>: <a rel="nofollow" class="external text" href="https://zoobank.org/NomenclaturalActs/572D025B-A6A8-4960-BC2F-623FA4F51496">572D025B-A6A8-4960-BC2F-623FA4F51496</a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img 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