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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"><span class="mw-page-title-main">Ornithopoda</span></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 38 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-38" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">38 languages</span> </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/Ornithopoda" title="Ornithopoda – Afrikaans" lang="af" hreflang="af" data-title="Ornithopoda" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B7%D9%8A%D8%B1%D9%8A%D8%A7%D8%AA_%D8%A7%D9%84%D8%A3%D8%B1%D8%AC%D9%84" title="طيريات الأرجل – Arabic" lang="ar" hreflang="ar" data-title="طيريات الأرجل" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%85%E0%A6%B0%E0%A7%8D%E0%A6%A8%E0%A6%BF%E0%A6%A5%E0%A7%8B%E0%A6%AA%E0%A7%8B%E0%A6%A1%E0%A6%BE" title="অর্নিথোপোডা – Bangla" lang="bn" hreflang="bn" data-title="অর্নিথোপোডা" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Ornithopoda" title="Ornithopoda – Breton" lang="br" hreflang="br" data-title="Ornithopoda" data-language-autonym="Brezhoneg" data-language-local-name="Breton" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Ornit%C3%B2podes" title="Ornitòpodes – Catalan" lang="ca" hreflang="ca" data-title="Ornitòpodes" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-ceb mw-list-item"><a href="https://ceb.wikipedia.org/wiki/Ornithopoda" title="Ornithopoda – Cebuano" lang="ceb" hreflang="ceb" data-title="Ornithopoda" data-language-autonym="Cebuano" data-language-local-name="Cebuano" class="interlanguage-link-target"><span>Cebuano</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Ornithopoda" title="Ornithopoda – Czech" lang="cs" hreflang="cs" data-title="Ornithopoda" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Ornithopoda" title="Ornithopoda – German" lang="de" hreflang="de" data-title="Ornithopoda" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Ornithopoda" title="Ornithopoda – Spanish" lang="es" hreflang="es" data-title="Ornithopoda" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Ornithopoda" title="Ornithopoda – Basque" lang="eu" hreflang="eu" data-title="Ornithopoda" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%BE%D8%B1%D9%86%D8%AF%D9%87%E2%80%8C%D9%BE%D8%A7%DB%8C%D8%A7%D9%86" title="پرنده‌پایان – Persian" lang="fa" hreflang="fa" data-title="پرنده‌پایان" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Ornithopoda" title="Ornithopoda – French" lang="fr" hreflang="fr" data-title="Ornithopoda" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%A1%B0%EA%B0%81%ED%95%98%EB%AA%A9" title="조각하목 – Korean" lang="ko" hreflang="ko" data-title="조각하목" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Ornithopoda" title="Ornithopoda – Croatian" lang="hr" hreflang="hr" data-title="Ornithopoda" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Ornithopoda" title="Ornithopoda – Indonesian" lang="id" hreflang="id" data-title="Ornithopoda" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Ornithopoda" title="Ornithopoda – Italian" lang="it" hreflang="it" data-title="Ornithopoda" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%90%D7%95%D7%A8%D7%A0%D7%99%D7%AA%D7%95%D7%A4%D7%95%D7%93%D7%94" title="אורניתופודה – Hebrew" lang="he" hreflang="he" data-title="אורניתופודה" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%9D%E1%83%A0%E1%83%9C%E1%83%98%E1%83%97%E1%83%9D%E1%83%9E%E1%83%9D%E1%83%93%E1%83%94%E1%83%91%E1%83%98" title="ორნითოპოდები – Georgian" lang="ka" hreflang="ka" data-title="ორნითოპოდები" data-language-autonym="ქართული" data-language-local-name="Georgian" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Ornithopoda" title="Ornithopoda – Hungarian" lang="hu" hreflang="hu" data-title="Ornithopoda" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Ornithopoda" title="Ornithopoda – Dutch" lang="nl" hreflang="nl" data-title="Ornithopoda" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E9%B3%A5%E8%84%9A%E9%A1%9E" title="鳥脚類 – Japanese" lang="ja" hreflang="ja" data-title="鳥脚類" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Ornitopody" title="Ornitopody – Polish" lang="pl" hreflang="pl" data-title="Ornitopody" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Ornithopoda" title="Ornithopoda – Portuguese" lang="pt" hreflang="pt" data-title="Ornithopoda" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Ornithopoda" title="Ornithopoda – Romanian" lang="ro" hreflang="ro" data-title="Ornithopoda" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9E%D1%80%D0%BD%D0%B8%D1%82%D0%BE%D0%BF%D0%BE%D0%B4%D1%8B" title="Орнитоподы – Russian" lang="ru" hreflang="ru" data-title="Орнитоподы" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Ornithopod" title="Ornithopod – Simple English" lang="en-simple" hreflang="en-simple" data-title="Ornithopod" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Ornitopody" title="Ornitopody – Slovak" lang="sk" hreflang="sk" data-title="Ornitopody" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/Ornithopoda" title="Ornithopoda – Serbian" lang="sr" hreflang="sr" data-title="Ornithopoda" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Ornitopodi" title="Ornitopodi – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Ornitopodi" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Ornitopodit" title="Ornitopodit – Finnish" lang="fi" hreflang="fi" data-title="Ornitopodit" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Ornithopoder" title="Ornithopoder – Swedish" lang="sv" hreflang="sv" data-title="Ornithopoder" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Ornithopoda" title="Ornithopoda – Tagalog" lang="tl" hreflang="tl" data-title="Ornithopoda" data-language-autonym="Tagalog" data-language-local-name="Tagalog" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%9E%D1%80%D0%BD%D0%B8%D1%82%D0%BE%D0%BF%D0%BE%D0%B4%D0%BB%D0%B0%D1%80" title="Орнитоподлар – Tatar" lang="tt" hreflang="tt" data-title="Орнитоподлар" data-language-autonym="Татарча / tatarça" data-language-local-name="Tatar" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Ornitopoda" title="Ornitopoda – Turkish" lang="tr" hreflang="tr" data-title="Ornitopoda" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9E%D1%80%D0%BD%D1%96%D1%82%D0%BE%D0%BF%D0%BE%D0%B4%D0%B8" title="Орнітоподи – Ukrainian" lang="uk" hreflang="uk" data-title="Орнітоподи" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Kh%E1%BB%A7ng_long_ch%C3%A2n_chim" title="Khủng long chân chim – Vietnamese" lang="vi" hreflang="vi" data-title="Khủng long chân chim" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E9%B3%A5%E8%85%B3%E4%BA%9E%E7%9B%AE" title="鳥腳亞目 – Cantonese" lang="yue" hreflang="yue" data-title="鳥腳亞目" data-language-autonym="粵語" data-language-local-name="Cantonese" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E9%B3%A5%E8%85%B3%E4%BA%9E%E7%9B%AE" title="鳥腳亞目 – Chinese" lang="zh" hreflang="zh" data-title="鳥腳亞目" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q467430#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div 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title="Dryomorpha">Dryomorpha</a>)</span></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">Extinct suborder of dinosaurs</div> <p class="mw-empty-elt"> </p> <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)">Ornithopods<br /><div style="font-size: 85%;">Temporal range: <a href="/wiki/Middle_Jurassic" title="Middle Jurassic">Middle Jurassic</a> - <a href="/wiki/Late_Cretaceous" title="Late Cretaceous">Late Cretaceous</a>, <span class="noprint"><span style="display:inline-block;"></span><span style="display:inline-block;">164–66 <a href="/wiki/Megaannum" class="mw-redirect" title="Megaannum">Ma</a></span> <span style="display:inline-block;"></span><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:164.49230769231px; width:33.169230769231px; background-color:#360; opacity:0.42;"></div> <div style="position:absolute; height:8px; left:164.49230769231px; width:33.169230769231px; background-color:#360; opacity:1;"></div> <div style="position:absolute; height:6px; top:1px; left:165.49230769231px; width:31.169230769231px; background-color:#6c3;"></div> </div> </div></span></div> </th></tr> <tr> <td colspan="2" style="text-align: center"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Ornithopoda_Infobox_Panoply.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Ornithopoda_Infobox_Panoply.png/290px-Ornithopoda_Infobox_Panoply.png" decoding="async" width="290" height="337" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Ornithopoda_Infobox_Panoply.png/435px-Ornithopoda_Infobox_Panoply.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Ornithopoda_Infobox_Panoply.png/580px-Ornithopoda_Infobox_Panoply.png 2x" data-file-width="1824" data-file-height="2122" /></a></span> </td></tr> <tr> <td colspan="2" style="text-align: center; font-size: 88%">Seven archetypal ornithopods (top left to bottom right): <i><a href="/wiki/Ouranosaurus" title="Ouranosaurus">Ouranosaurus</a></i>, <i><a href="/wiki/Tenontosaurus" title="Tenontosaurus">Tenontosaurus</a></i> (background) with <i><a href="/wiki/Convolosaurus" title="Convolosaurus">Convolosaurus</a></i> (foreground), <i><a href="/wiki/Muttaburrasaurus" title="Muttaburrasaurus">Muttaburrasaurus</a></i>, <i><a href="/wiki/Edmontosaurus_annectens" title="Edmontosaurus annectens">Edmontosaurus annectens</a></i>, <i><a href="/wiki/Dryosaurus_altus" class="mw-redirect" title="Dryosaurus altus">Dryosaurus altus</a></i>, <i><a href="/wiki/Corythosaurus_casuarius" class="mw-redirect" title="Corythosaurus casuarius">Corythosaurus casuarius</a></i> </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> <span class="plainlinks taxobox-edit-taxonomy skin-invert" style="font-size:smaller; float:right; padding-right:0.4em; margin-left:-3em;"><span typeof="mw:File"><a href="/wiki/Template:Taxonomy/Ornithopoda" 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></span></span> </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><i>Clade</i>: </td> <td><a href="/wiki/Dinosaur" title="Dinosaur">Dinosauria</a> </td></tr> <tr> <td><i>Clade</i>: </td> <td><span style="font-style:normal;font-weight:normal;">†</span><a href="/wiki/Ornithischia" title="Ornithischia">Ornithischia</a> </td></tr> <tr> <td><i>Clade</i>: </td> <td><span style="font-style:normal;font-weight:normal;">†</span><a href="/wiki/Neornithischia" title="Neornithischia">Neornithischia</a> </td></tr> <tr> <td><i>Clade</i>: </td> <td><span style="font-style:normal;font-weight:normal;">†</span><a href="/wiki/Cerapoda" class="mw-redirect" title="Cerapoda">Cerapoda</a> </td></tr> <tr> <td><i>Clade</i>: </td> <td><span style="font-style:normal;font-weight:normal;">†</span><a class="mw-selflink selflink">Ornithopoda</a><br /><small><a href="/wiki/Othniel_Charles_Marsh" title="Othniel Charles Marsh">Marsh</a>, 1881</small> </td></tr> <tr> <th colspan="2" style="color:inherit; text-align: center; background-color: rgb(235,235,210)">Subgroups </th></tr> <tr> <td colspan="2" style="text-align: left"> <ul><li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><b><a href="/wiki/Hypsilophodontidae" title="Hypsilophodontidae">Hypsilophodontidae</a></b></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><b>Iguanodontia</b> <small><a href="/wiki/Georg_Baur" title="Georg Baur">Baur</a>, <a href="/wiki/1891_in_paleontology" title="1891 in paleontology">1891</a></small> <ul><li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i><a href="/wiki/Burianosaurus" title="Burianosaurus">Burianosaurus</a></i>?</li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i><a href="/wiki/Callovosaurus" title="Callovosaurus">Callovosaurus</a></i></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><b><a href="/wiki/Elasmaria" title="Elasmaria">Elasmaria</a></b>?</li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><b><a href="/wiki/Rhabdodontomorpha" title="Rhabdodontomorpha">Rhabdodontomorpha</a></b></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><b>Dryomorpha</b> <small>Sereno, 1986</small> <ul><li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i><a href="/wiki/Draconyx" title="Draconyx">Draconyx</a></i></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i><a href="/wiki/Hesperonyx" title="Hesperonyx">Hesperonyx</a></i></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i><a href="/wiki/Owenodon" title="Owenodon">Owenodon</a></i></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><b><a href="/wiki/Dryosauridae" title="Dryosauridae">Dryosauridae</a></b></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><b><a href="/wiki/Ankylopollexia" title="Ankylopollexia">Ankylopollexia</a></b></li></ul></li></ul></li></ul> <style data-mw-deduplicate="TemplateStyles:r1256386598">.mw-parser-output .cot-header-mainspace{background:#F0F2F5;color:inherit}.mw-parser-output .cot-header-other{background:#CCFFCC;color:inherit}@media screen{html.skin-theme-clientpref-night .mw-parser-output .cot-header-mainspace{background:#14181F;color:inherit}html.skin-theme-clientpref-night .mw-parser-output .cot-header-other{background:#003500;color:inherit}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cot-header-mainspace{background:#14181F;color:inherit}html.skin-theme-clientpref-os .mw-parser-output .cot-header-other{background:#003500;color:inherit}}</style> <div style="margin-left:0"> <table class="mw-collapsible mw-archivedtalk mw-collapsed" style="color:inherit; background: transparent; text-align: left; border: 0 solid Silver; margin: 0.2em auto auto; width:100%; clear: both; padding: 1px;"> <tbody><tr> <th class="cot-header-mainspace" style="background:clear; font-size:87%; padding:0.2em 0.3em; text-align:left; color:#202122"><div style="font-size:115%;">Possible members</div> </th></tr> <tr> <td style="color:inherit; border: solid 0; padding: 0; background: clear;"> <ul><li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><b><a href="/wiki/Thescelosauridae" title="Thescelosauridae">Thescelosauridae</a></b> <small>(paraphyletic?)</small></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i><a href="/wiki/Changmiania" title="Changmiania">Changmiania</a></i></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i><a href="/wiki/Kulindadromeus" title="Kulindadromeus">Kulindadromeus</a></i></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i><a href="/wiki/Nanosaurus" title="Nanosaurus">Nanosaurus</a></i></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i><a href="/wiki/Yandusaurus" title="Yandusaurus">Yandusaurus</a></i></li></ul> </td></tr></tbody></table></div> </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><sup id="cite_ref-madzia2021_1-0" class="reference"><a href="#cite_note-madzia2021-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </th></tr> <tr> <td colspan="2" style="text-align: left"> <ul><li>?<b>Clypeodonta</b>? <small><a href="/wiki/David_B._Norman" title="David B. Norman">Norman</a>, <a href="/wiki/2014_in_paleontology" title="2014 in paleontology">2014</a></small></li> <li>?<b>Euornithopoda</b> <small><a href="/wiki/Paul_Sereno" title="Paul Sereno">Sereno</a>, <a href="/wiki/1986_in_paleontology" title="1986 in paleontology">1986</a></small></li> <li>?<b>Hypsilophodontia</b> <small>Cooper, <a href="/wiki/1985_in_paleontology" title="1985 in paleontology">1985</a></small></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> <p><b>Ornithopoda</b> (<span class="rt-commentedText nowrap"><span class="IPA nopopups noexcerpt" lang="en-fonipa"><a href="/wiki/Help:IPA/English" title="Help:IPA/English">/<span style="border-bottom:1px dotted"><span title="/ˌ/: secondary stress follows">ˌ</span><span title="/ɔːr/: 'ar' in 'war'">ɔːr</span><span title="'n' in 'nigh'">n</span><span title="/ə/: 'a' in 'about'">ə</span><span title="/ˈ/: primary stress follows">ˈ</span><span title="/θ/: 'th' in 'thigh'">θ</span><span title="/ɒ/: 'o' in 'body'">ɒ</span><span title="'p' in 'pie'">p</span><span title="/ə/: 'a' in 'about'">ə</span><span title="'d' in 'dye'">d</span><span title="/ə/: 'a' in 'about'">ə</span></span>/</a></span></span>)<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> is a <a href="/wiki/Clade" title="Clade">clade</a> of <a href="/wiki/Ornithischia" title="Ornithischia">ornithischian</a> <a href="/wiki/Dinosaur" title="Dinosaur">dinosaurs</a>, called <b>ornithopods</b> (<span class="rt-commentedText nowrap"><span class="IPA nopopups noexcerpt" lang="en-fonipa"><a href="/wiki/Help:IPA/English" title="Help:IPA/English">/<span style="border-bottom:1px dotted"><span title="/ˈ/: primary stress follows">ˈ</span><span title="/ɔːr/: 'ar' in 'war'">ɔːr</span><span title="'n' in 'nigh'">n</span><span title="/ə/: 'a' in 'about'">ə</span><span title="/θ/: 'th' in 'thigh'">θ</span><span title="/ə/: 'a' in 'about'">ə</span><span title="/ˌ/: secondary stress follows">ˌ</span><span title="'p' in 'pie'">p</span><span title="/ɒ/: 'o' in 'body'">ɒ</span><span title="'d' in 'dye'">d</span><span title="'z' in 'zoom'">z</span></span>,<span class="wrap"> </span><span style="border-bottom:1px dotted"><span title="/ɔːr/: 'ar' in 'war'">ɔːr</span><span title="/ˈ/: primary stress follows">ˈ</span><span title="'n' in 'nigh'">n</span><span title="/ɪ/: 'i' in 'kit'">ɪ</span><span title="/θ/: 'th' in 'thigh'">θ</span></span>-/</a></span></span>).<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> They represent one of the most successful groups of <a href="/wiki/Herbivore" title="Herbivore">herbivorous</a> dinosaurs during the <a href="/wiki/Cretaceous" title="Cretaceous">Cretaceous</a>. The most primitive members of the group were bipedal and relatively small-sized, while advanced members of the subgroup <b>Iguanodontia</b> became quadrupedal and developed large body size. Their major evolutionary advantage was the progressive development of a <a href="/wiki/Chewing" title="Chewing">chewing</a> apparatus that became the most sophisticated ever developed by a non-avian dinosaur, rivaling that of modern <a href="/wiki/Mammal" title="Mammal">mammals</a> such as the domestic <a href="/wiki/Cow" class="mw-redirect" title="Cow">cow</a>. They reached their apex of diversity and ecological dominance in the <a href="/wiki/Hadrosauridae" title="Hadrosauridae">hadrosaurids</a> (colloquially known as 'duck-bills'), before they were wiped out by the <a href="/wiki/Cretaceous%E2%80%93Paleogene_extinction_event" title="Cretaceous–Paleogene extinction event">Cretaceous–Paleogene extinction event</a> along with all other non-<a href="/wiki/Aves" class="mw-redirect" title="Aves">avian</a> <a href="/wiki/Dinosaur" title="Dinosaur">dinosaurs</a>. Members are known worldwide. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="History_of_research">History of research</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ornithopoda&action=edit&section=1" title="Edit section: History of research"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In 1870, <a href="/wiki/Thomas_Henry_Huxley" title="Thomas Henry Huxley">Thomas Henry Huxley</a> listed <a href="/wiki/Iguanodontidae" title="Iguanodontidae">Iguanodontidae</a> (coined by Cope a year earlier<sup id="cite_ref-cope1969_5-0" class="reference"><a href="#cite_note-cope1969-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup>) as one of his three families of dinosaurs (alongside <a href="/wiki/Megalosauridae" title="Megalosauridae">Megalosauridae</a> and <a href="/wiki/Scelidosauridae" class="mw-redirect" title="Scelidosauridae">Scelidosauridae</a>), including within it the genera <i><a href="/wiki/Iguanodon" title="Iguanodon">Iguanodon</a></i>, <i><a href="/wiki/Hypsilophodon" title="Hypsilophodon">Hypsilophodon</a></i>, and <i><a href="/wiki/Hadrosaurus" title="Hadrosaurus">Hadrosaurus</a></i>, in addition to <i><a href="/wiki/Cetiosaurus" title="Cetiosaurus">Cetiosaurus</a></i> and tentatively <i><a href="/wiki/Stenopelix" title="Stenopelix">Stenopelix</a></i>.<sup id="cite_ref-huxley1870b_6-0" class="reference"><a href="#cite_note-huxley1870b-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> The term Ornithopoda was erected by <a href="/wiki/Othniel_Charles_Marsh" title="Othniel Charles Marsh">Othniel Charles Marsh</a> in 1881 as part of his then still ongoing investigation of the classification of Dinosauria. It was considered one of the four definite <a href="/wiki/Order_(biology)" title="Order (biology)">orders</a> of dinosaurs, the others being <a href="/wiki/Theropoda" title="Theropoda">Theropoda</a>, <a href="/wiki/Sauropoda" title="Sauropoda">Sauropoda</a>, and <a href="/wiki/Stegosauria" title="Stegosauria">Stegosauria</a> (<a href="/wiki/Hallopoda" class="mw-redirect" title="Hallopoda">Hallopoda</a> was considered a possible fifth). He subdivided the order into three families: <a href="/wiki/Camptosauridae" class="mw-redirect" title="Camptosauridae">Camptonotidae</a>, <a href="/wiki/Iguanodontidae" title="Iguanodontidae">Iguanodontidae</a>, and <a href="/wiki/Hadrosauridae" title="Hadrosauridae">Hadrosauridae</a>; the former was a new name, whereas the latter two were carried over from the nomenclatures of Huxley and <a href="/wiki/Edward_Drinker_Cope" title="Edward Drinker Cope">Edward Drinker Cope</a> respectively. Within Camptonotidae he included the European <i><a href="/wiki/Hypsilophodon" title="Hypsilophodon">Hypsilophodon</a></i> and three American taxa he named himself, <i><a href="/wiki/Camptosaurus" title="Camptosaurus">Camptonotus</a></i>, <i><a href="/wiki/Laosaurus" title="Laosaurus">Laosaurus</a></i>, and <i><a href="/wiki/Nanosaurus" title="Nanosaurus">Nanosaurus</a></i>.<sup id="cite_ref-marsh1881_7-0" class="reference"><a href="#cite_note-marsh1881-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> <i>Camptonotus</i> was in 1885 renamed to <i>Camptosaurus</i>, as the original name was pre-occupied by <a href="/wiki/Camptonotus" title="Camptonotus">a cricket</a>; the associated family followed suit, becoming Camptosauridae.<sup id="cite_ref-marsh1885_8-0" class="reference"><a href="#cite_note-marsh1885-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> In Iguanodontidae, only found in Europe, he included <i><a href="/wiki/Iguanodon" title="Iguanodon">Iguanodon</a></i> and <i><a href="/wiki/Vectisaurus" class="mw-redirect" title="Vectisaurus">Vectisaurus</a></i>. In Hadrosauridae, he included <i><a href="/wiki/Hadrosaurus" title="Hadrosaurus">Hadrosaurus</a></i>, <i><a href="/wiki/Cionodon" title="Cionodon">Cionodon</a></i>, and tentatively <i><a href="/wiki/Agathaumas" title="Agathaumas">Agathaumas</a></i>.<sup id="cite_ref-marsh1881_7-1" class="reference"><a href="#cite_note-marsh1881-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Description">Description</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ornithopoda&action=edit&section=2" title="Edit section: Description"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Iguanodon_feet.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Iguanodon_feet.JPG/150px-Iguanodon_feet.JPG" decoding="async" width="150" height="198" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Iguanodon_feet.JPG/225px-Iguanodon_feet.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Iguanodon_feet.JPG/300px-Iguanodon_feet.JPG 2x" data-file-width="1835" data-file-height="2426" /></a><figcaption>Three-toed feet of <i><a href="/wiki/Iguanodon" title="Iguanodon">Iguanodon</a></i></figcaption></figure> <p><i>Ornithopoda</i> means "bird feet", from the <a href="/wiki/Greek_language" title="Greek language">Greek</a> <i>ornithos</i>, <i>ornis</i> ("bird") and <i>pous</i>, <i>podos</i> ("feet"); this is in reference to members’ characteristic birdlike feet.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> They were also characterized as lacking in body armour, not developing a horny <a href="/wiki/Beak" title="Beak">beak</a>, having an elongated <a href="/wiki/Pubis_(bone)" title="Pubis (bone)">pubis</a> (that eventually extended past the <a href="/wiki/Ilium_(bone)" title="Ilium (bone)">ilium</a>), and having a missing hole in the lower <a href="/wiki/Jaw" title="Jaw">jaw</a> (a <a href="/wiki/Mandibular_fenestra" class="mw-redirect" title="Mandibular fenestra">Mandibular fenestra</a>). A variety of ornithopods, and related <a href="/wiki/Ornithischia" title="Ornithischia">ornithischians</a>, had thin <a href="/wiki/Cartilage" title="Cartilage">cartilaginous</a> plates along the outside of the ribs; in some cases, these plates mineralized and were fossilized. The function of these intercostal plates is unknown. They have been found with <i><a href="/wiki/Hypsilophodon" title="Hypsilophodon">Hypsilophodon</a></i>, <i><a href="/wiki/Nanosaurus" title="Nanosaurus">Nanosaurus</a></i>, <i><a href="/wiki/Parksosaurus" title="Parksosaurus">Parksosaurus</a></i>, <i><a href="/wiki/Talenkauen" title="Talenkauen">Talenkauen</a></i>, <i><a href="/wiki/Thescelosaurus" title="Thescelosaurus">Thescelosaurus</a></i>,<sup id="cite_ref-BG08_10-0" class="reference"><a href="#cite_note-BG08-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> and <i><a href="/wiki/Macrogryphosaurus" title="Macrogryphosaurus">Macrogryphosaurus</a></i> to date.<sup id="cite_ref-CPN07_11-0" class="reference"><a href="#cite_note-CPN07-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p><p>The early ornithopods were only about 1 metre (3 feet) long, but probably very fast. They had a stiff tail, like the <a href="/wiki/Theropoda" title="Theropoda">theropods</a>, to help them balance as they ran on their hind legs. Later ornithopods became more adapted to grazing on all fours; their <a href="/wiki/Vertebral_column" title="Vertebral column">spines</a> curved, and came to resemble the spines of modern ground-feeders, such as the <a href="/wiki/Bison" title="Bison">bison</a>. As they became more adapted to eating while bent over, they became facultative quadrupeds; still running on two legs, and comfortable reaching up into trees, but spending most of their time walking or grazing on all fours. The taxonomy of dinosaurs previously ascribed to the <i>Hypsilophodontidae</i> is problematic. The group previously consisted of all non-<a href="/wiki/Iguanodontia" class="mw-redirect" title="Iguanodontia">iguanodontian</a> bipedal ornithischians, but a phylogenetic reappraisal has shown such species to be <a href="/wiki/Paraphyletic" class="mw-redirect" title="Paraphyletic">paraphyletic</a>. As such, the hypsilophodont family is currently represented only by <i><a href="/wiki/Hypsilophodon" title="Hypsilophodon">Hypsilophodon</a></i>.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </p><p>Later ornithopods became larger, but never rivalled the incredible size of the long-necked, long-tailed <a href="/wiki/Sauropod" class="mw-redirect" title="Sauropod">sauropods</a> that they partially supplanted. The very largest, such as <i><a href="/wiki/Shantungosaurus" title="Shantungosaurus">Shantungosaurus</a></i>, were as heavy as medium-sized sauropods (up to 23 <a href="/wiki/Metric_ton" class="mw-redirect" title="Metric ton">metric tons</a>/25 <a href="/wiki/Short_ton" title="Short ton">short tons</a>), but never grew much beyond 15 metres (50 feet). </p> <div class="mw-heading mw-heading2"><h2 id="Classification">Classification</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ornithopoda&action=edit&section=3" title="Edit section: Classification"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Iguanodontian_Sizes.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5a/Iguanodontian_Sizes.svg/220px-Iguanodontian_Sizes.svg.png" decoding="async" width="220" height="91" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5a/Iguanodontian_Sizes.svg/330px-Iguanodontian_Sizes.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5a/Iguanodontian_Sizes.svg/440px-Iguanodontian_Sizes.svg.png 2x" data-file-width="4519" data-file-height="1873" /></a><figcaption>Size of a variety of numerous ornithopods</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Diluvicursor_life_restoration.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/92/Diluvicursor_life_restoration.png/220px-Diluvicursor_life_restoration.png" decoding="async" width="220" height="155" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/92/Diluvicursor_life_restoration.png/330px-Diluvicursor_life_restoration.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/92/Diluvicursor_life_restoration.png/440px-Diluvicursor_life_restoration.png 2x" data-file-width="2625" data-file-height="1853" /></a><figcaption>An artist's interpretation of <i><a href="/wiki/Diluvicursor" title="Diluvicursor">Diluvicursor</a></i>, an <a href="/wiki/Elasmarian" class="mw-redirect" title="Elasmarian">elasmarian</a></figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Muttaburrasaurus_NT.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a6/Muttaburrasaurus_NT.jpg/220px-Muttaburrasaurus_NT.jpg" decoding="async" width="220" height="114" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a6/Muttaburrasaurus_NT.jpg/330px-Muttaburrasaurus_NT.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a6/Muttaburrasaurus_NT.jpg/440px-Muttaburrasaurus_NT.jpg 2x" data-file-width="593" data-file-height="308" /></a><figcaption>Restoration of <i><a href="/wiki/Muttaburrasaurus" title="Muttaburrasaurus">Muttaburrasaurus</a></i>, an early <a href="/wiki/Iguanodont" class="mw-redirect" title="Iguanodont">iguanodont</a></figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:D._lettowvorbecki.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/cb/D._lettowvorbecki.jpg/220px-D._lettowvorbecki.jpg" decoding="async" width="220" height="132" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/cb/D._lettowvorbecki.jpg/330px-D._lettowvorbecki.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/cb/D._lettowvorbecki.jpg/440px-D._lettowvorbecki.jpg 2x" data-file-width="3429" data-file-height="2061" /></a><figcaption>Skeleton of <i><a href="/wiki/Dysalotosaurus" title="Dysalotosaurus">Dysalotosaurus</a></i>, a <a href="/wiki/Dryosaurid" class="mw-redirect" title="Dryosaurid">dryosaurid</a> ornithopod from the Jurassic</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Life_restoration_of_Iguanacolossus.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/66/Life_restoration_of_Iguanacolossus.jpg/220px-Life_restoration_of_Iguanacolossus.jpg" decoding="async" width="220" height="84" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/66/Life_restoration_of_Iguanacolossus.jpg/330px-Life_restoration_of_Iguanacolossus.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/66/Life_restoration_of_Iguanacolossus.jpg/440px-Life_restoration_of_Iguanacolossus.jpg 2x" data-file-width="2066" data-file-height="790" /></a><figcaption>Life restoration of <i><a href="/wiki/Iguanacolossus" title="Iguanacolossus">Iguanacolossus</a></i>, a <a href="/wiki/Styracosterna" class="mw-redirect" title="Styracosterna">styracosternan</a></figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Life_reconstruction_of_Amurosaurus_riabinini.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/53/Life_reconstruction_of_Amurosaurus_riabinini.png/220px-Life_reconstruction_of_Amurosaurus_riabinini.png" decoding="async" width="220" height="91" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/53/Life_reconstruction_of_Amurosaurus_riabinini.png/330px-Life_reconstruction_of_Amurosaurus_riabinini.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/53/Life_reconstruction_of_Amurosaurus_riabinini.png/440px-Life_reconstruction_of_Amurosaurus_riabinini.png 2x" data-file-width="1355" data-file-height="559" /></a><figcaption>Life restoration of <i><a href="/wiki/Amurosaurus" title="Amurosaurus">Amurosaurus</a></i>, a <a href="/wiki/Lambeosaurine" class="mw-redirect" title="Lambeosaurine">lambeosaurine</a> hadrosaur, and one of the last ornithopods</figcaption></figure> <p>Historically, most indeterminate ornithischian <a href="/wiki/Biped" class="mw-redirect" title="Biped">bipeds</a> were lumped in as ornithopods. Most have since been reclassified.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (June 2018)">citation needed</span></a></i>]</sup> </p> <div class="mw-heading mw-heading3"><h3 id="Taxonomy">Taxonomy</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ornithopoda&action=edit&section=4" title="Edit section: Taxonomy"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><b>Ornithopoda</b> is usually given the rank of Suborder, within the order Ornithischia. While ranked taxonomy has largely fallen out of favour among dinosaur paleontologists, some researchers have continued to employ such a classification, though sources have differed on what its rank should be. Benton (2004) placed it as an infraorder within the suborder <a href="/wiki/Cerapoda" class="mw-redirect" title="Cerapoda">Cerapoda</a> (originally named as an unranked <a href="/wiki/Clade" title="Clade">clade</a>), while others, such as Ibiricu <i>et al.</i> 2010, have retained it at its traditional ranking of suborder.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> </p><p><b>Iguanodontia</b> is often listed as an infraorder within a suborder Ornithopoda, though Benton (2004) lists Ornithopoda as an infraorder and does not rank Iguanodontia. Traditionally, iguanodontians were grouped into the superfamily Iguanodontoidea and family <a href="/wiki/Iguanodontidae" title="Iguanodontidae">Iguanodontidae</a>. However, <a href="/wiki/Phylogenetic" class="mw-redirect" title="Phylogenetic">phylogenetic</a> studies show that the traditional "iguanodontids" are a <a href="/wiki/Paraphyletic" class="mw-redirect" title="Paraphyletic">paraphyletic</a> grade leading up to the <a href="/wiki/Hadrosaurid" class="mw-redirect" title="Hadrosaurid">hadrosaurs</a> (duck-billed dinosaurs). Groups like Iguanodontoidea are sometimes still used as unranked <a href="/wiki/Clade" title="Clade">clades</a> in the scientific literature, though many traditional "iguanodontids" are now included in the more inclusive group <a href="/wiki/Hadrosauroidea" title="Hadrosauroidea">Hadrosauroidea</a>.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (July 2018)">citation needed</span></a></i>]</sup> Iguanodontia was originally phylogenetically defined, by <a href="/wiki/Paul_Sereno" title="Paul Sereno">Paul Sereno</a>, in 1998, as the most inclusive group containing <i><a href="/wiki/Parasaurolophus_walkeri" class="mw-redirect" title="Parasaurolophus walkeri">Parasaurolophus walkeri</a></i> but not <i><a href="/wiki/Hypsilophodon_foxii" class="mw-redirect" title="Hypsilophodon foxii">Hypsilophodon foxii</a></i>. Later, in 2005, he amended the definition to include <i><a href="/wiki/Thescelosaurus_neglectus" class="mw-redirect" title="Thescelosaurus neglectus">Thescelosaurus neglectus</a></i> as a secondary external specifier, alongside <i>Hypsilophodon</i>, accounting for the paraphyletic nature of <a href="/wiki/Hypsilophodontidae" title="Hypsilophodontidae">Hypsilophodontidae</a>.<sup id="cite_ref-taxonsearch_14-0" class="reference"><a href="#cite_note-taxonsearch-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> A 2017 study which named and described <i><a href="/wiki/Burianosaurus" title="Burianosaurus">Burianosaurus</a></i> noted that the type species <i><a href="/wiki/Iguanodon_bernissartensis" class="mw-redirect" title="Iguanodon bernissartensis">Iguanodon bernissartensis</a></i> must be part of the definition, and that the 2005 definition would, in their analysis, include a far larger group than intended (including <a href="/wiki/Marginocephalia" title="Marginocephalia">Marginocephalia</a>). They proposed an entirely new, <a href="/wiki/Phylogenetic_nomenclature#Phylogenetic_definitions_of_clade_names" title="Phylogenetic nomenclature">node-based</a> definition: the last common ancestor of <i>Iguanodon bernissartensis</i>, <i><a href="/wiki/Dryosaurus_altus" class="mw-redirect" title="Dryosaurus altus">Dryosaurus altus</a></i>, <i><a href="/wiki/Rhabdodon_priscus" class="mw-redirect" title="Rhabdodon priscus">Rhabdodon priscus</a></i>, and <i><a href="/wiki/Tenontosaurus_tilletti" class="mw-redirect" title="Tenontosaurus tilletti">Tenontosaurus tilletti</a></i>.<sup id="cite_ref-madzia_15-0" class="reference"><a href="#cite_note-madzia-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> In 2021, <b>Iguanodontia</b> was given a formal definition under the <a href="/wiki/PhyloCode" title="PhyloCode">PhyloCode</a>: "The smallest clade containing <i><a href="/wiki/Dryosaurus_altus" class="mw-redirect" title="Dryosaurus altus">Dryosaurus altus</a></i>, <i><a href="/wiki/Iguanodon_bernissartensis" class="mw-redirect" title="Iguanodon bernissartensis">Iguanodon bernissartensis</a></i>, <i><a href="/wiki/Rhabdodon_priscus" class="mw-redirect" title="Rhabdodon priscus">Rhabdodon priscus</a></i>, and <i><a href="/wiki/Tenontosaurus_tilletti" class="mw-redirect" title="Tenontosaurus tilletti">Tenontosaurus tilletti</a></i>, provided that it does not include <i><a href="/wiki/Hypsilophodon_foxii" class="mw-redirect" title="Hypsilophodon foxii">Hypsilophodon foxii</a></i>." Under this revised definition, Iguanodontia is limited to its traditionally included species, and if it were found to include hypsilophodonts, which were not traditionally considered iguanodontians, it would become an invalid grouping.<sup id="cite_ref-madzia2021_1-1" class="reference"><a href="#cite_note-madzia2021-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> The slightly less inclusive clade <b>Dryomorpha</b> was named by Paul Sereno in 1986 and given a formal definition in the <i><a href="/wiki/PhyloCode" title="PhyloCode">PhyloCode</a></i> as "the smallest clade containing <i><a href="/wiki/Dryosaurus_altus" class="mw-redirect" title="Dryosaurus altus">Dryosaurus altus</a></i> and <i><a href="/wiki/Iguanodon_bernissartensis" class="mw-redirect" title="Iguanodon bernissartensis">Iguanodon bernissartensis</a></i>".<sup id="cite_ref-madzia2021_1-2" class="reference"><a href="#cite_note-madzia2021-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> This group includes basal members such as <i><a href="/wiki/Hesperonyx" title="Hesperonyx">Hesperonyx</a></i>, members of the family <b><a href="/wiki/Dryosauridae" title="Dryosauridae">Dryosauridae</a></b>, and the derived clade <b><a href="/wiki/Ankylopollexia" title="Ankylopollexia">Ankylopollexia</a></b>.<sup id="cite_ref-fonseca2024_16-0" class="reference"><a href="#cite_note-fonseca2024-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Phylogeny">Phylogeny</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ornithopoda&action=edit&section=5" title="Edit section: Phylogeny"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In 2021, Ornithopoda was given a formal definition under the <a href="/wiki/PhyloCode" title="PhyloCode">PhyloCode</a>: "The largest clade containing <i><a href="/wiki/Iguanodon_bernissartensis" class="mw-redirect" title="Iguanodon bernissartensis">Iguanodon bernissartensis</a></i> but not <i><a href="/wiki/Pachycephalosaurus_wyomingensis" class="mw-redirect" title="Pachycephalosaurus wyomingensis">Pachycephalosaurus wyomingensis</a></i> and <i><a href="/wiki/Triceratops_horridus" class="mw-redirect" title="Triceratops horridus">Triceratops horridus</a></i>."<sup id="cite_ref-madzia2021_1-3" class="reference"><a href="#cite_note-madzia2021-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> The <a href="/wiki/Cladogram" title="Cladogram">cladogram</a> below follows a 2024 analysis of Fonseca <i>et al.</i><sup id="cite_ref-fonseca2024_16-1" class="reference"><a href="#cite_note-fonseca2024-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> </p> <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" style="font-size:85%; line-height:85%;"> <tbody><tr> <td class="clade-label first"><a href="/wiki/Pyrodontia" class="mw-redirect" title="Pyrodontia">Pyrodontia</a> </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"> <p><a href="/wiki/Thescelosauridae" title="Thescelosauridae">Thescelosauridae</a> </p> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"> </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"> <p><i><a href="/wiki/Kulindadromeus" title="Kulindadromeus">Kulindadromeus</a></i> </p> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"><a href="/wiki/Cerapoda" class="mw-redirect" title="Cerapoda">Cerapoda</a> </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"> <p><a href="/wiki/Marginocephalia" title="Marginocephalia">Marginocephalia</a> <span style="display: inline-block; transform: scaleX(-1);"><span typeof="mw:File"><a href="/wiki/File:Triceratops_horridus.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/08/Triceratops_horridus.png/80px-Triceratops_horridus.png" decoding="async" width="80" height="37" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/08/Triceratops_horridus.png/120px-Triceratops_horridus.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/08/Triceratops_horridus.png/160px-Triceratops_horridus.png 2x" data-file-width="1826" data-file-height="848" /></a></span></span> </p> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"><b>Ornithopoda</b> </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"><a href="/wiki/Hypsilophodontidae" title="Hypsilophodontidae">Hypsilophodontidae</a> </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"> <p><i><a href="/wiki/Gideonmantellia" title="Gideonmantellia">Gideonmantellia</a></i> </p> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"> </td> <td rowspan="2" class="clade-leaf"> <p><i><a href="/wiki/Hypsilophodon" title="Hypsilophodon">Hypsilophodon</a></i> <span typeof="mw:File"><a href="/wiki/File:Hypsilophodon_UDL.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Hypsilophodon_UDL.png/80px-Hypsilophodon_UDL.png" decoding="async" width="80" height="29" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Hypsilophodon_UDL.png/120px-Hypsilophodon_UDL.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/73/Hypsilophodon_UDL.png/160px-Hypsilophodon_UDL.png 2x" data-file-width="3000" data-file-height="1100" /></a></span> </p> </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"><b>Iguanodontia</b> </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"><a href="/wiki/Rhabdodontomorpha" title="Rhabdodontomorpha">Rhabdodontomorpha</a> </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"> <p><a href="/wiki/Tenontosauridae" class="mw-redirect" title="Tenontosauridae">Tenontosauridae</a> </p> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"> </td> <td rowspan="2" class="clade-leaf"> <p><a href="/wiki/Rhabdodontoidea" class="mw-redirect" title="Rhabdodontoidea">Rhabdodontoidea</a> </p> </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"><b>Euiguanodontia</b> </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"> <p><i><a href="/wiki/Anabisetia" title="Anabisetia">Anabisetia</a></i> </p> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"> </td> <td rowspan="2" class="clade-leaf"> <p><i><a href="/wiki/Diluvicursor" title="Diluvicursor">Diluvicursor</a></i> </p> </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"> </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"> <p><i><a href="/wiki/Gasparinisaura" title="Gasparinisaura">Gasparinisaura</a></i> </p> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"> </td> <td rowspan="2" class="clade-leaf"> <p><i><a href="/wiki/Notohypsilophodon" title="Notohypsilophodon">Notohypsilophodon</a></i> </p> </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"> </td> <td rowspan="2" class="clade-leaf"> <p><a href="/wiki/Elasmaria" title="Elasmaria">Elasmaria</a> <span style="display: inline-block; transform: scaleX(-1);"><span typeof="mw:File"><a href="/wiki/File:Muttaburrasaurus_NT.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a6/Muttaburrasaurus_NT.jpg/80px-Muttaburrasaurus_NT.jpg" decoding="async" width="80" height="42" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a6/Muttaburrasaurus_NT.jpg/120px-Muttaburrasaurus_NT.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a6/Muttaburrasaurus_NT.jpg/160px-Muttaburrasaurus_NT.jpg 2x" data-file-width="593" data-file-height="308" /></a></span></span> </p> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"> </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"> <p><i><a href="/wiki/Iyuku" title="Iyuku">Iyuku</a></i> </p> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"><b>Dryomorpha</b> </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"> <p><a href="/wiki/Dryosauridae" title="Dryosauridae">Dryosauridae</a> </p> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"> </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"> <p>CM 1949 </p> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"> </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"> <p><i><a href="/wiki/Oblitosaurus" title="Oblitosaurus">Oblitosaurus</a></i> </p> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"> </td> <td rowspan="2" class="clade-leaf"> <p><b><a href="/wiki/Ankylopollexia" title="Ankylopollexia">Ankylopollexia</a></b><span style="display: inline-block; transform: scaleX(-1);"><span typeof="mw:File"><a href="/wiki/File:Life_reconstruction_of_Parasaurolophus_walkeri.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f4/Life_reconstruction_of_Parasaurolophus_walkeri.png/80px-Life_reconstruction_of_Parasaurolophus_walkeri.png" decoding="async" width="80" height="28" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f4/Life_reconstruction_of_Parasaurolophus_walkeri.png/120px-Life_reconstruction_of_Parasaurolophus_walkeri.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f4/Life_reconstruction_of_Parasaurolophus_walkeri.png/160px-Life_reconstruction_of_Parasaurolophus_walkeri.png 2x" data-file-width="1367" data-file-height="475" /></a></span></span> </p> </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 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 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 class="clade-slabel last"> </td></tr></tbody></table></div> </td></tr> <tr> <td class="clade-slabel last"> </td></tr></tbody></table></div> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ornithopoda&action=edit&section=6" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></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"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-madzia2021-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-madzia2021_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-madzia2021_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-madzia2021_1-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-madzia2021_1-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text"><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 .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFMadziaArbourBoydFarke2021" class="citation journal cs1">Madzia, D.; Arbour, V.M.; Boyd, C.A.; Farke, A.A.; Cruzado-Caballero, P.; Evans, D.C. (2021). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8667728">"The phylogenetic nomenclature of ornithischian dinosaurs"</a>. <i>PeerJ</i>. <b>9</b>: e12362. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.7717%2Fpeerj.12362">10.7717/peerj.12362</a></span>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8667728">8667728</a></span>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/34966571">34966571</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=PeerJ&rft.atitle=The+phylogenetic+nomenclature+of+ornithischian+dinosaurs&rft.volume=9&rft.pages=e12362&rft.date=2021&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC8667728%23id-name%3DPMC&rft_id=info%3Apmid%2F34966571&rft_id=info%3Adoi%2F10.7717%2Fpeerj.12362&rft.aulast=Madzia&rft.aufirst=D.&rft.au=Arbour%2C+V.M.&rft.au=Boyd%2C+C.A.&rft.au=Farke%2C+A.A.&rft.au=Cruzado-Caballero%2C+P.&rft.au=Evans%2C+D.C.&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC8667728&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrnithopoda" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.merriam-webster.com/dictionary/Ornithopoda">"Ornithopoda"</a>. <i><a href="/wiki/Merriam-Webster" title="Merriam-Webster">Merriam-Webster.com Dictionary</a></i>. 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"Classification of the Dinosauria". <i>American Journal of Science</i>. <b>23</b> (133): 81–86. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1882AmJS...23...81M">1882AmJS...23...81M</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.2475%2Fajs.s3-23.133.81">10.2475/ajs.s3-23.133.81</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:130836648">130836648</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=American+Journal+of+Science&rft.atitle=Classification+of+the+Dinosauria&rft.volume=23&rft.issue=133&rft.pages=81-86&rft.date=1882&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A130836648%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.2475%2Fajs.s3-23.133.81&rft_id=info%3Abibcode%2F1882AmJS...23...81M&rft.aulast=Marsh&rft.aufirst=O.+C.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrnithopoda" class="Z3988"></span></span> </li> <li id="cite_note-marsh1885-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-marsh1885_8-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMarsh,_Othniel_C.1885" class="citation journal cs1">Marsh, Othniel C. 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(1992). <a rel="nofollow" class="external text" href="http://doc.rero.ch/record/13899/files/PAL_E839.pdf">"Systematics of Hypsilophodontidae and basal Iguanodontia (Dinosauria: Ornithopoda)"</a> <span class="cs1-format">(PDF)</span>. <i>Historical Biology</i>. <b>6</b> (3): 159–184. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1992HBio....6..159W">1992HBio....6..159W</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1080%2F10292389209380426">10.1080/10292389209380426</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Historical+Biology&rft.atitle=Systematics+of+Hypsilophodontidae+and+basal+Iguanodontia+%28Dinosauria%3A+Ornithopoda%29&rft.volume=6&rft.issue=3&rft.pages=159-184&rft.date=1992&rft_id=info%3Adoi%2F10.1080%2F10292389209380426&rft_id=info%3Abibcode%2F1992HBio....6..159W&rft.au=Weishampel%2C+D.+B.&rft.au=Heinrich%2C+R.+E.&rft_id=http%3A%2F%2Fdoc.rero.ch%2Frecord%2F13899%2Ffiles%2FPAL_E839.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrnithopoda" class="Z3988"></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFIbiricuMartínezLamannaCasal2010" class="citation journal cs1">Ibiricu, Lucio M.; Martínez, Rubén D.; Lamanna, Matthew C.; Casal, Gabriel A.; Luna, Marcelo; Harris, Jerald D.; Lacovara, Kenneth J. 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"A Medium-Sized Ornithopod (Dinosauria: Ornithischia) from the Upper Cretaceous Bajo Barreal Formation of Lago Colhué Huapi, Southern Chubut Province, Argentina". <i>Annals of Carnegie Museum</i>. <b>79</b>: 39–50. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.2992%2F007.079.0103">10.2992/007.079.0103</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:53407321">53407321</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Annals+of+Carnegie+Museum&rft.atitle=A+Medium-Sized+Ornithopod+%28Dinosauria%3A+Ornithischia%29+from+the+Upper+Cretaceous+Bajo+Barreal+Formation+of+Lago+Colhu%C3%A9+Huapi%2C+Southern+Chubut+Province%2C+Argentina&rft.volume=79&rft.pages=39-50&rft.date=2010&rft_id=info%3Adoi%2F10.2992%2F007.079.0103&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A53407321%23id-name%3DS2CID&rft.aulast=Ibiricu&rft.aufirst=Lucio+M.&rft.au=Mart%C3%ADnez%2C+Rub%C3%A9n+D.&rft.au=Lamanna%2C+Matthew+C.&rft.au=Casal%2C+Gabriel+A.&rft.au=Luna%2C+Marcelo&rft.au=Harris%2C+Jerald+D.&rft.au=Lacovara%2C+Kenneth+J.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrnithopoda" class="Z3988"></span></span> </li> <li id="cite_note-taxonsearch-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-taxonsearch_14-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSereno,_Paul2005" class="citation web cs1">Sereno, Paul (2005). <a rel="nofollow" class="external text" href="http://taxonsearch.uchicago.edu/?tax_id=178&exe=display&ke=key">"Iguanodontia"</a>. TaxonSearch<span class="reference-accessdate">. Retrieved <span class="nowrap">July 5,</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Iguanodontia&rft.pub=TaxonSearch&rft.date=2005&rft.au=Sereno%2C+Paul&rft_id=http%3A%2F%2Ftaxonsearch.uchicago.edu%2F%3Ftax_id%3D178%26exe%3Ddisplay%26ke%3Dkey&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrnithopoda" class="Z3988"></span></span> </li> <li id="cite_note-madzia-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-madzia_15-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMadziaBoydMazuch2017" class="citation journal cs1">Madzia, Daniel; Boyd, Clint A.; Mazuch, Martin (2017). <a rel="nofollow" class="external text" href="https://figshare.com/articles/dataset/A_basal_ornithopod_dinosaur_from_the_Cenomanian_of_the_Czech_Republic/5436457">"A basal ornithopod dinosaur from the Cenomanian of the Czech Republic"</a>. <i>Journal of Systematic Palaeontology</i>. <b>16</b> (11): 967–979. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1080%2F14772019.2017.1371258">10.1080/14772019.2017.1371258</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:90008574">90008574</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Systematic+Palaeontology&rft.atitle=A+basal+ornithopod+dinosaur+from+the+Cenomanian+of+the+Czech+Republic&rft.volume=16&rft.issue=11&rft.pages=967-979&rft.date=2017&rft_id=info%3Adoi%2F10.1080%2F14772019.2017.1371258&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A90008574%23id-name%3DS2CID&rft.aulast=Madzia&rft.aufirst=Daniel&rft.au=Boyd%2C+Clint+A.&rft.au=Mazuch%2C+Martin&rft_id=https%3A%2F%2Ffigshare.com%2Farticles%2Fdataset%2FA_basal_ornithopod_dinosaur_from_the_Cenomanian_of_the_Czech_Republic%2F5436457&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrnithopoda" class="Z3988"></span></span> </li> <li id="cite_note-fonseca2024-16"><span class="mw-cite-backlink">^ <a href="#cite_ref-fonseca2024_16-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-fonseca2024_16-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFonsecaReidVennerDuncan2024" class="citation journal cs1">Fonseca, A.O.; Reid, I.J.; Venner, A.; Duncan, R.J.; Garcia, M.S.; Müller, R.T. (2024). "A comprehensive phylogenetic analysis on early ornithischian evolution". <i>Journal of Systematic Palaeontology</i>. <b>22</b> (1): 2346577. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1080%2F14772019.2024.2346577">10.1080/14772019.2024.2346577</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Systematic+Palaeontology&rft.atitle=A+comprehensive+phylogenetic+analysis+on+early+ornithischian+evolution&rft.volume=22&rft.issue=1&rft.pages=2346577&rft.date=2024&rft_id=info%3Adoi%2F10.1080%2F14772019.2024.2346577&rft.aulast=Fonseca&rft.aufirst=A.O.&rft.au=Reid%2C+I.J.&rft.au=Venner%2C+A.&rft.au=Duncan%2C+R.J.&rft.au=Garcia%2C+M.S.&rft.au=M%C3%BCller%2C+R.T.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrnithopoda" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ornithopoda&action=edit&section=7" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="http://www.geol.umd.edu/~tholtz/G104/10419orni.htm">GEOL 104 dinosaurs: a Natural history, ornithopoda: beaks, bills & crests</a>, by Thomas R. Holtz Jr.</li></ul> <style data-mw-deduplicate="TemplateStyles:r1130092004">.mw-parser-output .portal-bar{font-size:88%;font-weight:bold;display:flex;justify-content:center;align-items:baseline}.mw-parser-output .portal-bar-bordered{padding:0 2em;background-color:#fdfdfd;border:1px solid #a2a9b1;clear:both;margin:1em auto 0}.mw-parser-output .portal-bar-related{font-size:100%;justify-content:flex-start}.mw-parser-output .portal-bar-unbordered{padding:0 1.7em;margin-left:0}.mw-parser-output .portal-bar-header{margin:0 1em 0 0.5em;flex:0 0 auto;min-height:24px}.mw-parser-output .portal-bar-content{display:flex;flex-flow:row wrap;flex:0 1 auto;padding:0.15em 0;column-gap:1em;align-items:baseline;margin:0;list-style:none}.mw-parser-output .portal-bar-content-related{margin:0;list-style:none}.mw-parser-output .portal-bar-item{display:inline-block;margin:0.15em 0.2em;min-height:24px;line-height:24px}@media screen and (max-width:768px){.mw-parser-output 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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:Ornithischia" title="Template:Ornithischia"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Ornithischia" title="Template talk:Ornithischia"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Ornithischia" title="Special:EditPage/Template:Ornithischia"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Ornithischia" style="font-size:114%;margin:0 4em"><a href="/wiki/Ornithischia" title="Ornithischia">Ornithischia</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_*_Class:_Sauropsida_*_Clade:_Avemetatarsalia_*_Clade:_Dinosauria" style="font-size:114%;margin:0 4em"><span style="font-weight:normal; font-style:normal"><span style="font-size:85%;"> <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/Reptile" title="Reptile">Sauropsida</a></li> <li><i>Clade</i>: <a href="/wiki/Avemetatarsalia" title="Avemetatarsalia">Avemetatarsalia</a></li> <li><i>Clade</i>: <a href="/wiki/Dinosaur" title="Dinosaur">Dinosauria</a></li></ul> </span></span></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="Avemetatarsalia" scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Avemetatarsalia" title="Avemetatarsalia">Avemetatarsalia</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:Avemetatarsalia" title="Template:Avemetatarsalia">Avemetatarsalia</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Ornithischia" title="Ornithischia">Ornithischia</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 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><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="Ornithischia" style="font-size:114%;margin:0 4em"><a href="/wiki/Ornithischia" title="Ornithischia">Ornithischia</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="Ornithischia" scope="row" class="navbox-group" style="width:1%"><div style="position: absolute; transform: translate(-50%,-50%) rotate(270deg);"><a href="/wiki/Ornithischia" title="Ornithischia">Ornithischia</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"></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><i><a href="/wiki/Amanasaurus" title="Amanasaurus">Amanasaurus</a></i>?</li> <li><i><a href="/wiki/Asilisaurus" title="Asilisaurus">Asilisaurus</a></i>?</li> <li><i><a href="/wiki/Diodorus_scytobrachion" title="Diodorus scytobrachion">Diodorus</a></i>?</li> <li><i><a href="/wiki/Eocursor" title="Eocursor">Eocursor</a></i></li> <li><i><a href="/wiki/Eucoelophysis" title="Eucoelophysis">Eucoelophysis</a></i>?</li> <li><i><a href="/wiki/Gamatavus" title="Gamatavus">Gamatavus</a></i>?</li> <li><i><a href="/wiki/Ignotosaurus" title="Ignotosaurus">Ignotosaurus</a></i>?</li> <li><i><a href="/wiki/Kwanasaurus" title="Kwanasaurus">Kwanasaurus</a></i>?</li> <li><i><a href="/wiki/Laquintasaura" title="Laquintasaura">Laquintasaura</a></i></li> <li><i><a href="/wiki/Lesothosaurus" title="Lesothosaurus">Lesothosaurus</a></i></li> <li><i><a href="/wiki/Lewisuchus" title="Lewisuchus">Lewisuchus</a></i>?</li> <li><i><a href="/wiki/Lutungutali" title="Lutungutali">Lutungutali</a></i>?</li> <li><i><a href="/wiki/Pisanosaurus" title="Pisanosaurus">Pisanosaurus</a></i>?</li> <li><i><a href="/wiki/Sacisaurus" title="Sacisaurus">Sacisaurus</a></i>?</li> <li><i><a href="/wiki/Silesaurus" title="Silesaurus">Silesaurus</a></i>?</li> <li><i><a href="/wiki/Soumyasaurus" title="Soumyasaurus">Soumyasaurus</a></i>?</li> <li><i><a href="/wiki/Technosaurus" title="Technosaurus">Technosaurus</a></i>?</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Heterodontosauridae" title="Heterodontosauridae">Heterodontosauridae</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><i><a href="/wiki/Abrictosaurus" title="Abrictosaurus">Abrictosaurus</a></i></li> <li><i><a href="/wiki/Echinodon" title="Echinodon">Echinodon</a></i></li> <li><i><a href="/wiki/Fruitadens" title="Fruitadens">Fruitadens</a></i></li> <li><i><a href="/wiki/Heterodontosaurus" title="Heterodontosaurus">Heterodontosaurus</a></i></li> <li><i><a href="/wiki/Lycorhinus" title="Lycorhinus">Lycorhinus</a></i></li> <li><i><a href="/wiki/Manidens" title="Manidens">Manidens</a></i></li> <li><i><a href="/wiki/Pegomastax" title="Pegomastax">Pegomastax</a></i></li> <li><i><a href="/wiki/Tianyulong" title="Tianyulong">Tianyulong</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Thyreophora" title="Thyreophora">Thyreophora</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><i><a href="/wiki/Emausaurus" title="Emausaurus">Emausaurus</a></i></li> <li><i><a href="/wiki/Scelidosaurus" title="Scelidosaurus">Scelidosaurus</a></i></li> <li><i><a href="/wiki/Scutellosaurus" title="Scutellosaurus">Scutellosaurus</a></i></li> <li><i><a href="/wiki/Yuxisaurus" title="Yuxisaurus">Yuxisaurus</a></i></li> <li><i><a href="/wiki/Jakapil" title="Jakapil">Jakapil</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Ankylosauria" title="Ankylosauria">Ankylosauria</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:Ankylosauria" title="Template:Ankylosauria">Ankylosauria</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Stegosauria" title="Stegosauria">Stegosauria</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:Stegosauria" title="Template:Stegosauria">Stegosauria</a></li></ul></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%"><div style="position: absolute; transform: translate(-50%,-50%) rotate(270deg);"><a href="/wiki/Neornithischia" title="Neornithischia">Neornithischia</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><i><a href="/wiki/Agilisaurus" title="Agilisaurus">Agilisaurus</a></i></li> <li><i><a href="/wiki/Hexinlusaurus" title="Hexinlusaurus">Hexinlusaurus</a></i></li> <li><i><a href="/wiki/Hypsilophodon" title="Hypsilophodon">Hypsilophodon</a></i></li> <li><i><a href="/wiki/Kulindadromeus" title="Kulindadromeus">Kulindadromeus</a></i></li> <li><i><a href="/wiki/Minimocursor" title="Minimocursor">Minimocursor</a></i></li> <li><i><a href="/wiki/Nanosaurus" title="Nanosaurus">Nanosaurus</a></i></li> <li><i><a href="/wiki/Phyllodon" title="Phyllodon">Phyllodon</a></i></li> <li><i><a href="/wiki/Sanxiasaurus" title="Sanxiasaurus">Sanxiasaurus</a></i></li> <li><i><a href="/wiki/Xiaosaurus" title="Xiaosaurus">Xiaosaurus</a></i></li> <li><i><a href="/wiki/Yandusaurus" title="Yandusaurus">Yandusaurus</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Thescelosauridae" title="Thescelosauridae">Thescelosauridae</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><i><a href="/wiki/Albertadromeus" title="Albertadromeus">Albertadromeus</a></i></li> <li><i><a href="/wiki/Changchunsaurus" title="Changchunsaurus">Changchunsaurus</a></i>?</li> <li><i><a href="/wiki/Changmiania" title="Changmiania">Changmiania</a></i>?</li> <li><i><a href="/wiki/Fona" title="Fona">Fona</a></i></li> <li><i><a href="/wiki/Haya_griva" title="Haya griva">Haya</a></i>?</li> <li><i><a href="/wiki/Jeholosaurus" title="Jeholosaurus">Jeholosaurus</a></i>?</li> <li><i><a href="/wiki/Koreanosaurus" title="Koreanosaurus">Koreanosaurus</a></i>?</li> <li><i><a href="/wiki/Nanosaurus" title="Nanosaurus">Nanosaurus</a></i>?</li> <li><i><a href="/wiki/Nevadadromeus" title="Nevadadromeus">Nevadadromeus</a></i></li> <li><i><a href="/wiki/Orodromeus" title="Orodromeus">Orodromeus</a></i></li> <li><i><a href="/wiki/Oryctodromeus" title="Oryctodromeus">Oryctodromeus</a></i></li> <li><i><a href="/wiki/Parksosaurus" title="Parksosaurus">Parksosaurus</a></i></li> <li><i><a href="/wiki/Thescelosaurus" title="Thescelosaurus">Thescelosaurus</a></i></li> <li><i><a href="/wiki/Yueosaurus" title="Yueosaurus">Yueosaurus</a></i>?</li> <li><i><a href="/wiki/Zephyrosaurus" title="Zephyrosaurus">Zephyrosaurus</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a class="mw-selflink selflink">Ornithopoda</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:Ornithopoda" title="Template:Ornithopoda">Ornithopoda</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Marginocephalia" title="Marginocephalia">Marginocephalia</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%"><a href="/wiki/Ceratopsia" title="Ceratopsia">Ceratopsia</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:Ceratopsia" title="Template:Ceratopsia">Ceratopsia</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Pachycephalosauria" title="Pachycephalosauria">Pachycephalosauria</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:Pachycephalosauria" title="Template:Pachycephalosauria">Pachycephalosauria</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><span style="display: inline-block; transform: scaleX(-1);"><span typeof="mw:File"><a href="/wiki/File:Laquintasaura_fixed_by_Tom_Parker.png" class="mw-file-description" title="Laquintasaura venezuelae"><img alt="Laquintasaura venezuelae" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/ae/Laquintasaura_fixed_by_Tom_Parker.png/100px-Laquintasaura_fixed_by_Tom_Parker.png" decoding="async" width="100" height="37" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/ae/Laquintasaura_fixed_by_Tom_Parker.png/150px-Laquintasaura_fixed_by_Tom_Parker.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/ae/Laquintasaura_fixed_by_Tom_Parker.png/200px-Laquintasaura_fixed_by_Tom_Parker.png 2x" data-file-width="1694" data-file-height="622" /></a></span></span> <p><span typeof="mw:File"><a href="/wiki/File:Heterodontosaurus_restoration.jpg" class="mw-file-description" title="Heterodontosaurus tucki"><img alt="Heterodontosaurus tucki" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/14/Heterodontosaurus_restoration.jpg/100px-Heterodontosaurus_restoration.jpg" decoding="async" width="100" height="46" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/14/Heterodontosaurus_restoration.jpg/150px-Heterodontosaurus_restoration.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/14/Heterodontosaurus_restoration.jpg/200px-Heterodontosaurus_restoration.jpg 2x" data-file-width="1812" data-file-height="825" /></a></span> <span style="display: inline-block; transform: scaleX(-1);"><span typeof="mw:File"><a href="/wiki/File:Scelidosaurus_harrisonii.png" class="mw-file-description" title="Scutellosaurus lawleri"><img alt="Scutellosaurus lawleri" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/02/Scelidosaurus_harrisonii.png/100px-Scelidosaurus_harrisonii.png" decoding="async" width="100" height="37" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/02/Scelidosaurus_harrisonii.png/150px-Scelidosaurus_harrisonii.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/02/Scelidosaurus_harrisonii.png/200px-Scelidosaurus_harrisonii.png 2x" data-file-width="3497" data-file-height="1291" /></a></span></span> <span style="display: inline-block; transform: scaleX(-1);"><span typeof="mw:File"><a href="/wiki/File:Kulindadromeus_by_Tom_Parker.png" class="mw-file-description" title="Kulindadromeus zabaikalicus"><img alt="Kulindadromeus zabaikalicus" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/da/Kulindadromeus_by_Tom_Parker.png/100px-Kulindadromeus_by_Tom_Parker.png" decoding="async" width="100" height="42" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/da/Kulindadromeus_by_Tom_Parker.png/150px-Kulindadromeus_by_Tom_Parker.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/da/Kulindadromeus_by_Tom_Parker.png/200px-Kulindadromeus_by_Tom_Parker.png 2x" data-file-width="2125" data-file-height="885" /></a></span></span> </p> <span typeof="mw:File"><a href="/wiki/File:Thescelosaurus_filamented.jpg" class="mw-file-description" title="Thescelosaurus neglectus"><img alt="Thescelosaurus neglectus" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b4/Thescelosaurus_filamented.jpg/100px-Thescelosaurus_filamented.jpg" decoding="async" width="100" height="33" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b4/Thescelosaurus_filamented.jpg/150px-Thescelosaurus_filamented.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b4/Thescelosaurus_filamented.jpg/200px-Thescelosaurus_filamented.jpg 2x" data-file-width="1140" data-file-height="379" /></a></span></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="See_also" style="font-size:114%;margin:0 4em">See also</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%"><i><a href="/wiki/Nomen_dubium" title="Nomen dubium">Nomina dubia</a></i></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/Alocodon" title="Alocodon">Alocodon</a></i></li> <li><i><a href="/wiki/Bienosaurus" title="Bienosaurus">Bienosaurus</a></i></li> <li><i><a href="/wiki/Craspedodon" title="Craspedodon">Craspedodon</a></i></li> <li><i><a href="/wiki/Fabrosaurus" title="Fabrosaurus">Fabrosaurus</a></i></li> <li><i><a href="/wiki/Ferganocephale" title="Ferganocephale">Ferganocephale</a></i></li> <li><i><a href="/wiki/Geranosaurus" title="Geranosaurus">Geranosaurus</a></i></li> <li><i><a href="/wiki/Gongbusaurus" title="Gongbusaurus">Gongbusaurus</a></i></li> <li><i><a href="/wiki/Laosaurus" title="Laosaurus">Laosaurus</a></i></li> <li><i><a href="/wiki/Notoceratops" title="Notoceratops">Notoceratops</a></i></li> <li><i><a href="/wiki/Siluosaurus" title="Siluosaurus">Siluosaurus</a></i></li> <li><i><a href="/wiki/Syngonosaurus" title="Syngonosaurus">Syngonosaurus</a></i></li> <li><i><a href="/wiki/Tatisaurus" title="Tatisaurus">Tatisaurus</a></i></li> <li><i><a href="/wiki/Tichosteus" title="Tichosteus">Tichosteus</a></i></li> <li><i><a href="/wiki/Trimucrodon" title="Trimucrodon">Trimucrodon</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><i><a href="/wiki/Incertae_sedis" title="Incertae sedis">Incertae sedis</a></i></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/Ajkaceratops" title="Ajkaceratops">Ajkaceratops</a></i></li> <li><i><a href="/wiki/Dravidosaurus" title="Dravidosaurus">Dravidosaurus</a></i>?</li> <li><i><a href="/wiki/Jakapil" title="Jakapil">Jakapil</a></i></li> <li><i><a href="/wiki/Serendipaceratops" title="Serendipaceratops">Serendipaceratops</a></i></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-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ornithoscelida" title="Ornithoscelida">Ornithoscelida</a></li> <li><a href="/wiki/Phytodinosauria" title="Phytodinosauria">Phytodinosauria</a></li> <li><a href="/wiki/Silesauridae" title="Silesauridae">Silesauridae</a></li> <li><a href="/wiki/Hypsilophodontidae" title="Hypsilophodontidae">Hypsilophodontidae</a></li> <li><a href="/wiki/Jeholosauridae" title="Jeholosauridae">Jeholosauridae</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other articles</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/List_of_stratigraphic_units_with_ornithischian_tracks" title="List of stratigraphic units with ornithischian tracks">List of stratigraphic units with ornithischian tracks</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"></div><div role="navigation" class="navbox" aria-labelledby="Ornithopoda" 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:Ornithopoda" title="Template:Ornithopoda"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Ornithopoda" title="Template talk:Ornithopoda"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Ornithopoda" title="Special:EditPage/Template:Ornithopoda"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Ornithopoda" style="font-size:114%;margin:0 4em"><a class="mw-selflink selflink">Ornithopoda</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:_Dinosauria_*_Clade:_Ornithischia_*_Clade:_Neornithischia_*_Clade:_Cerapoda" style="font-size:114%;margin:0 4em"><span style="font-weight:normal; font-style:normal"><span style="font-size:85%;"> <ul><li>Kingdom: <a href="/wiki/Animal" title="Animal">Animalia</a></li> <li>Phylum: <a href="/wiki/Chordate" title="Chordate">Chordata</a></li> <li><i>Clade</i>: <a href="/wiki/Dinosaur" title="Dinosaur">Dinosauria</a></li> <li><i>Clade</i>: <a href="/wiki/Ornithischia" title="Ornithischia">Ornithischia</a></li> <li><i>Clade</i>: <a href="/wiki/Neornithischia" title="Neornithischia">Neornithischia</a></li> <li><i>Clade</i>: <a href="/wiki/Cerapoda" class="mw-redirect" title="Cerapoda">Cerapoda</a></li></ul> </span></span></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="Avemetatarsalia" scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Avemetatarsalia" title="Avemetatarsalia">Avemetatarsalia</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:Avemetatarsalia" title="Template:Avemetatarsalia">Avemetatarsalia</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Ornithischia" title="Ornithischia">Ornithischia</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:Ornithischia" title="Template:Ornithischia">Ornithischia</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a class="mw-selflink selflink">Ornithopoda</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="Ornithopoda" style="font-size:114%;margin:0 4em"><a class="mw-selflink selflink">Ornithopoda</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="Ornithopoda" scope="row" class="navbox-group" style="width:1%"><div style="position: absolute; transform: translate(-50%,-50%) rotate(270deg);"><a class="mw-selflink selflink">Ornithopoda</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"></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><i><a href="/wiki/Burianosaurus" title="Burianosaurus">Burianosaurus</a></i></li> <li><i><a href="/wiki/Callovosaurus" title="Callovosaurus">Callovosaurus</a></i></li> <li><b><a href="/wiki/Thescelosauridae" title="Thescelosauridae">Thescelosauridae</a></b>?</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Hypsilophodontidae" title="Hypsilophodontidae">Hypsilophodontidae</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><i><a href="/wiki/Gideonmantellia" title="Gideonmantellia">Gideonmantellia</a></i>?</li> <li><i><a href="/wiki/Hypsilophodon" title="Hypsilophodon">Hypsilophodon</a></i></li> <li><i><a href="/wiki/Vectidromeus" title="Vectidromeus">Vectidromeus</a></i>?</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Elasmaria" title="Elasmaria">Elasmaria</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><i><a href="/wiki/Anabisetia" title="Anabisetia">Anabisetia</a></i></li> <li><i><a href="/wiki/Atlascopcosaurus" title="Atlascopcosaurus">Atlascopcosaurus</a></i></li> <li><i><a href="/wiki/Chakisaurus" title="Chakisaurus">Chakisaurus</a></i></li> <li><i><a href="/wiki/Diluvicursor" title="Diluvicursor">Diluvicursor</a></i></li> <li><i><a href="/wiki/Fostoria_dhimbangunmal" title="Fostoria dhimbangunmal">Fostoria</a></i>?</li> <li><i><a href="/wiki/Galleonosaurus" title="Galleonosaurus">Galleonosaurus</a></i></li> <li><i><a href="/wiki/Gasparinisaura" title="Gasparinisaura">Gasparinisaura</a></i></li> <li><i><a href="/wiki/Isasicursor" title="Isasicursor">Isasicursor</a></i></li> <li><i><a href="/wiki/Kangnasaurus" title="Kangnasaurus">Kangnasaurus</a></i>?</li> <li><i><a href="/wiki/Leaellynasaura" title="Leaellynasaura">Leaellynasaura</a></i></li> <li><i><a href="/wiki/Macrogryphosaurus" title="Macrogryphosaurus">Macrogryphosaurus</a></i></li> <li><i><a href="/wiki/Mahuidacursor" title="Mahuidacursor">Mahuidacursor</a></i></li> <li><i><a href="/wiki/Morrosaurus" title="Morrosaurus">Morrosaurus</a></i></li> <li><i><a href="/wiki/Muttaburrasaurus" title="Muttaburrasaurus">Muttaburrasaurus</a></i>?</li> <li><i><a href="/wiki/Notohypsilophodon" title="Notohypsilophodon">Notohypsilophodon</a></i></li> <li><i><a href="/wiki/Qantassaurus" title="Qantassaurus">Qantassaurus</a></i></li> <li><i><a href="/wiki/Sektensaurus" title="Sektensaurus">Sektensaurus</a></i></li> <li><i><a href="/wiki/Talenkauen" title="Talenkauen">Talenkauen</a></i></li> <li><i><a href="/wiki/Tietasaura" title="Tietasaura">Tietasaura</a></i></li> <li><i><a href="/wiki/Trinisaura" title="Trinisaura">Trinisaura</a></i></li> <li><i><a href="/wiki/Weewarrasaurus" title="Weewarrasaurus">Weewarrasaurus</a></i>?</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Rhabdodontomorpha" title="Rhabdodontomorpha">Rhabdodontomorpha</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><i><a href="/wiki/Ampelognathus" title="Ampelognathus">Ampelognathus</a></i>?</li> <li><i><a href="/wiki/Emiliasaura" title="Emiliasaura">Emiliasaura</a></i></li> <li><i><a href="/wiki/Fostoria_dhimbangunmal" title="Fostoria dhimbangunmal">Fostoria</a></i>?</li> <li><i><a href="/wiki/Muttaburrasaurus" title="Muttaburrasaurus">Muttaburrasaurus</a></i>?</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Tenontosauridae" class="mw-redirect" title="Tenontosauridae">Tenontosauridae</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><i><a href="/wiki/Convolosaurus" title="Convolosaurus">Convolosaurus</a></i>?</li> <li><i><a href="/wiki/Iani" title="Iani">Iani</a></i></li> <li><i><a href="/wiki/Tenontosaurus" title="Tenontosaurus">Tenontosaurus</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Rhabdodontidae" title="Rhabdodontidae">Rhabdodontidae</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><i><a href="/wiki/Matheronodon" title="Matheronodon">Matheronodon</a></i></li> <li><i><a href="/wiki/Mochlodon" title="Mochlodon">Mochlodon</a></i></li> <li><i><a href="/wiki/Pareisactus" title="Pareisactus">Pareisactus</a></i></li> <li><i><a href="/wiki/Rhabdodon" title="Rhabdodon">Rhabdodon</a></i></li> <li><i><a href="/wiki/Transylvanosaurus" title="Transylvanosaurus">Transylvanosaurus</a></i></li> <li><i><a href="/wiki/Zalmoxes" title="Zalmoxes">Zalmoxes</a></i></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%"><div style="position: absolute; transform: translate(-50%,-50%) rotate(270deg);"><a href="/wiki/Dryomorpha" class="mw-redirect" title="Dryomorpha">Dryomorpha</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"></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><i><a href="/wiki/Draconyx" title="Draconyx">Draconyx</a></i></li> <li><i><a href="/wiki/Hesperonyx" title="Hesperonyx">Hesperonyx</a></i></li> <li><i><a href="/wiki/Owenodon" title="Owenodon">Owenodon</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Dryosauridae" title="Dryosauridae">Dryosauridae</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><i><a href="/wiki/Dryosaurus" title="Dryosaurus">Dryosaurus</a></i></li> <li><i><a href="/wiki/Dysalotosaurus" title="Dysalotosaurus">Dysalotosaurus</a></i></li> <li><i><a href="/wiki/Elrhazosaurus" title="Elrhazosaurus">Elrhazosaurus</a></i></li> <li><i><a href="/wiki/Eousdryosaurus" title="Eousdryosaurus">Eousdryosaurus</a></i></li> <li><i><a href="/wiki/Iyuku" title="Iyuku">Iyuku</a></i>?</li> <li><i><a href="/wiki/Kangnasaurus" title="Kangnasaurus">Kangnasaurus</a></i>?</li> <li><i><a href="/wiki/Valdosaurus" title="Valdosaurus">Valdosaurus</a></i></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/Ankylopollexia" title="Ankylopollexia">Ankylopollexia</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><i><a href="/wiki/Barilium" title="Barilium">Barilium</a></i></li> <li><i><a href="/wiki/Bayannurosaurus" title="Bayannurosaurus">Bayannurosaurus</a></i></li> <li><i><a href="/wiki/Calvarius" title="Calvarius">Calvarius</a></i></li> <li><i><a href="/wiki/Camptosaurus" title="Camptosaurus">Camptosaurus</a></i></li> <li><i><a href="/wiki/Cedrorestes" title="Cedrorestes">Cedrorestes</a></i></li> <li><i><a href="/wiki/Cumnoria" title="Cumnoria">Cumnoria</a></i>?</li> <li><i><a href="/wiki/Dakotadon" title="Dakotadon">Dakotadon</a></i></li> <li><i><a href="/wiki/Fukuisaurus" title="Fukuisaurus">Fukuisaurus</a></i></li> <li><i><a href="/wiki/Hippodraco" title="Hippodraco">Hippodraco</a></i></li> <li><i><a href="/wiki/Iguanacolossus" title="Iguanacolossus">Iguanacolossus</a></i></li> <li><i><a href="/wiki/Lanzhousaurus" title="Lanzhousaurus">Lanzhousaurus</a></i></li> <li><i><a href="/wiki/Lurdusaurus" title="Lurdusaurus">Lurdusaurus</a></i></li> <li><i><a href="/wiki/Magnamanus" title="Magnamanus">Magnamanus</a></i></li> <li><i><a href="/wiki/Napaisaurus" title="Napaisaurus">Napaisaurus</a></i></li> <li><i><a href="/wiki/Oblitosaurus" title="Oblitosaurus">Oblitosaurus</a></i></li> <li><i><a href="/wiki/Osmakasaurus" title="Osmakasaurus">Osmakasaurus</a></i></li> <li><i><a href="/wiki/Planicoxa" title="Planicoxa">Planicoxa</a></i></li> <li><i><a href="/wiki/Proa_valdearinnoensis" title="Proa valdearinnoensis">Proa</a></i></li> <li><i><a href="/wiki/Ratchasimasaurus" title="Ratchasimasaurus">Ratchasimasaurus</a></i></li> <li><i><a href="/wiki/Riabininohadros" title="Riabininohadros">Riabininohadros</a></i></li> <li><i><a href="/wiki/Theiophytalia" title="Theiophytalia">Theiophytalia</a></i></li> <li><i><a href="/wiki/Uteodon" title="Uteodon">Uteodon</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Hadrosauriformes" class="mw-redirect" title="Hadrosauriformes">Hadrosauriformes</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><i><a href="/wiki/Bolong" title="Bolong">Bolong</a></i></li> <li><i><a href="/wiki/Brighstoneus" title="Brighstoneus">Brighstoneus</a></i></li> <li><i><a href="/wiki/Hypselospinus" title="Hypselospinus">Hypselospinus</a></i></li> <li><i><a href="/wiki/Jinzhousaurus" title="Jinzhousaurus">Jinzhousaurus</a></i></li> <li><i><a href="/wiki/Mantellisaurus" title="Mantellisaurus">Mantellisaurus</a></i></li> <li><i><a href="/wiki/Morelladon" title="Morelladon">Morelladon</a></i></li> <li><i><a href="/wiki/Ouranosaurus" title="Ouranosaurus">Ouranosaurus</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Iguanodontidae" title="Iguanodontidae">Iguanodontidae</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><i><a href="/wiki/Barilium" title="Barilium">Barilium</a></i>?</li> <li><i><a href="/wiki/Comptonatus" title="Comptonatus">Comptonatus</a></i></li> <li><i><a href="/wiki/Iguanodon" title="Iguanodon">Iguanodon</a></i></li> <li><i><a href="/wiki/Mantellisaurus" title="Mantellisaurus">Mantellisaurus</a></i>?</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Hadrosauroidea" title="Hadrosauroidea">Hadrosauroidea</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 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></tbody></table><div></div></td><td class="noviewer navbox-image" rowspan="1" style="width:1px;padding:0 0 0 2px"><div><span typeof="mw:File"><a href="/wiki/File:Notohypsilodon_reconstruction_raingerr.png" class="mw-file-description" title="Notohypsilodon comodorensis"><img alt="Notohypsilodon comodorensis" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/93/Notohypsilodon_reconstruction_raingerr.png/100px-Notohypsilodon_reconstruction_raingerr.png" decoding="async" width="100" height="41" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/93/Notohypsilodon_reconstruction_raingerr.png/150px-Notohypsilodon_reconstruction_raingerr.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/93/Notohypsilodon_reconstruction_raingerr.png/200px-Notohypsilodon_reconstruction_raingerr.png 2x" data-file-width="2160" data-file-height="880" /></a></span> <p><span style="display: inline-block; transform: scaleX(-1);"><span typeof="mw:File"><a href="/wiki/File:Rhabdodon_by_Tom_Parker.png" class="mw-file-description" title="Rhabdodon priscus"><img alt="Rhabdodon priscus" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/25/Rhabdodon_by_Tom_Parker.png/100px-Rhabdodon_by_Tom_Parker.png" decoding="async" width="100" height="35" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/25/Rhabdodon_by_Tom_Parker.png/150px-Rhabdodon_by_Tom_Parker.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/25/Rhabdodon_by_Tom_Parker.png/200px-Rhabdodon_by_Tom_Parker.png 2x" data-file-width="1985" data-file-height="699" /></a></span></span> </p> <span typeof="mw:File"><a href="/wiki/File:Ouranosaurus_nigeriensis_restoration.png" class="mw-file-description" title="Ouranosaurus nigeriensis"><img alt="Ouranosaurus nigeriensis" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/42/Ouranosaurus_nigeriensis_restoration.png/100px-Ouranosaurus_nigeriensis_restoration.png" decoding="async" width="100" height="44" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/42/Ouranosaurus_nigeriensis_restoration.png/150px-Ouranosaurus_nigeriensis_restoration.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/42/Ouranosaurus_nigeriensis_restoration.png/200px-Ouranosaurus_nigeriensis_restoration.png 2x" data-file-width="4500" data-file-height="1958" /></a></span></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="Hadrosauroidea" style="font-size:114%;margin:0 4em"><a href="/wiki/Hadrosauroidea" title="Hadrosauroidea">Hadrosauroidea</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="Hadrosauroidea" scope="row" class="navbox-group" style="width:1%"><div style="position: absolute; transform: translate(-50%,-50%) rotate(270deg);"><a href="/wiki/Hadrosauroidea" title="Hadrosauroidea">Hadrosauroidea</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><i><a href="/wiki/Altirhinus" title="Altirhinus">Altirhinus</a></i></li> <li><i><a href="/wiki/Bactrosaurus" title="Bactrosaurus">Bactrosaurus</a></i></li> <li><i><a href="/wiki/Batyrosaurus" title="Batyrosaurus">Batyrosaurus</a></i>?</li> <li><i><a href="/wiki/Choyrodon" title="Choyrodon">Choyrodon</a></i></li> <li><i><a href="/wiki/Claosaurus" title="Claosaurus">Claosaurus</a></i></li> <li><i><a href="/wiki/Datonglong" title="Datonglong">Datonglong</a></i></li> <li><i><a href="/wiki/Eolambia" title="Eolambia">Eolambia</a></i></li> <li><i><a href="/wiki/Equijubus" title="Equijubus">Equijubus</a></i></li> <li><i><a href="/wiki/Fylax" title="Fylax">Fylax</a></i></li> <li><i><a href="/wiki/Gilmoreosaurus" title="Gilmoreosaurus">Gilmoreosaurus</a></i></li> <li><i><a href="/wiki/Gobihadros" title="Gobihadros">Gobihadros</a></i></li> <li><i><a href="/wiki/Gongpoquansaurus" title="Gongpoquansaurus">Gongpoquansaurus</a></i></li> <li><i><a href="/wiki/Gonkoken" title="Gonkoken">Gonkoken</a></i></li> <li><i><a href="/wiki/Huehuecanauhtlus" title="Huehuecanauhtlus">Huehuecanauhtlus</a></i></li> <li><i><a href="/wiki/Jeyawati" title="Jeyawati">Jeyawati</a></i></li> <li><i><a href="/wiki/Jintasaurus" title="Jintasaurus">Jintasaurus</a></i></li> <li><i><a href="/wiki/Koshisaurus" title="Koshisaurus">Koshisaurus</a></i>?</li> <li><i><a href="/wiki/Levnesovia" title="Levnesovia">Levnesovia</a></i></li> <li><i><a href="/wiki/Lophorhothon" title="Lophorhothon">Lophorhothon</a></i></li> <li><i><a href="/wiki/Nanningosaurus" title="Nanningosaurus">Nanningosaurus</a></i></li> <li><i><a href="/wiki/Nanyangosaurus" title="Nanyangosaurus">Nanyangosaurus</a></i></li> <li><i><a href="/wiki/Penelopognathus" title="Penelopognathus">Penelopognathus</a></i></li> <li><i><a href="/wiki/Plesiohadros" title="Plesiohadros">Plesiohadros</a></i></li> <li><i><a href="/wiki/Portellsaurus" title="Portellsaurus">Portellsaurus</a></i></li> <li><i><a href="/wiki/Probactrosaurus" title="Probactrosaurus">Probactrosaurus</a></i></li> <li><i><a href="/wiki/Protohadros" title="Protohadros">Protohadros</a></i></li> <li><i><a href="/wiki/Qianjiangsaurus" title="Qianjiangsaurus">Qianjiangsaurus</a></i></li> <li><i><a href="/wiki/Shuangmiaosaurus" title="Shuangmiaosaurus">Shuangmiaosaurus</a></i></li> <li><i><a href="/wiki/Siamodon" title="Siamodon">Siamodon</a></i></li> <li><i><a href="/wiki/Sirindhorna" title="Sirindhorna">Sirindhorna</a></i></li> <li><i><a href="/wiki/Tanius" title="Tanius">Tanius</a></i></li> <li><i><a href="/wiki/Telmatosaurus" title="Telmatosaurus">Telmatosaurus</a></i></li> <li><i><a href="/wiki/Tethyshadros" title="Tethyshadros">Tethyshadros</a></i></li> <li><i><a href="/wiki/Xuwulong" title="Xuwulong">Xuwulong</a></i></li> <li><i><a href="/wiki/Yunganglong" title="Yunganglong">Yunganglong</a></i></li> <li><i><a href="/wiki/Zhanghenglong" title="Zhanghenglong">Zhanghenglong</a></i></li> <li><i><a href="/wiki/Zuoyunlong" title="Zuoyunlong">Zuoyunlong</a></i></li></ul> </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/Hadrosauridae" title="Hadrosauridae">Hadrosauridae</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><i><a href="/wiki/Aquilarhinus" title="Aquilarhinus">Aquilarhinus</a></i></li> <li><i><a href="/wiki/Eotrachodon" title="Eotrachodon">Eotrachodon</a></i></li> <li><i><a href="/wiki/Hadrosaurus" title="Hadrosaurus">Hadrosaurus</a></i></li> <li><i><a href="/wiki/Lapampasaurus" title="Lapampasaurus">Lapampasaurus</a></i></li> <li><i><a href="/wiki/Malefica" title="Malefica">Malefica</a></i></li> <li><i><a href="/wiki/Yamatosaurus" title="Yamatosaurus">Yamatosaurus</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Lambeosaurinae" title="Lambeosaurinae">Lambeosaurinae</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><i><a href="/wiki/Adynomosaurus" title="Adynomosaurus">Adynomosaurus</a></i></li> <li><i><a href="/wiki/Ajnabia" title="Ajnabia">Ajnabia</a></i></li> <li><i><a href="/wiki/Angulomastacator" title="Angulomastacator">Angulomastacator</a></i></li> <li><i><a href="/wiki/Aralosaurus" title="Aralosaurus">Aralosaurus</a></i></li> <li><i><a href="/wiki/Arenysaurus" title="Arenysaurus">Arenysaurus</a></i></li> <li><i><a href="/wiki/Blasisaurus" title="Blasisaurus">Blasisaurus</a></i></li> <li><i><a href="/wiki/Canardia" title="Canardia">Canardia</a></i></li> <li><i><a href="/wiki/Jaxartosaurus" title="Jaxartosaurus">Jaxartosaurus</a></i></li> <li><i><a href="/wiki/Kazaklambia" title="Kazaklambia">Kazaklambia</a></i></li> <li><i><a href="/wiki/Latirhinus" title="Latirhinus">Latirhinus</a></i>?</li> <li><i><a href="/wiki/Minqaria" title="Minqaria">Minqaria</a></i></li> <li><i><a href="/wiki/Nipponosaurus" title="Nipponosaurus">Nipponosaurus</a></i></li> <li><i><a href="/wiki/Pararhabdodon" title="Pararhabdodon">Pararhabdodon</a></i></li> <li><i><a href="/wiki/Tsintaosaurus" title="Tsintaosaurus">Tsintaosaurus</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Parasaurolophini" class="mw-redirect" title="Parasaurolophini">Parasaurolophini</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><i><a href="/wiki/Adelolophus" title="Adelolophus">Adelolophus</a></i></li> <li><i><a href="/wiki/Charonosaurus" title="Charonosaurus">Charonosaurus</a></i></li> <li><i><a href="/wiki/Parasaurolophus" title="Parasaurolophus">Parasaurolophus</a></i></li> <li><i><a href="/wiki/Tlatolophus" title="Tlatolophus">Tlatolophus</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Lambeosaurini" class="mw-redirect" title="Lambeosaurini">Lambeosaurini</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><i><a href="/wiki/Amurosaurus" title="Amurosaurus">Amurosaurus</a></i></li> <li><i><a href="/wiki/Corythosaurus" title="Corythosaurus">Corythosaurus</a></i></li> <li><i><a href="/wiki/Hypacrosaurus" title="Hypacrosaurus">Hypacrosaurus</a></i></li> <li><i><a href="/wiki/Lambeosaurus" title="Lambeosaurus">Lambeosaurus</a></i></li> <li><i><a href="/wiki/Magnapaulia" title="Magnapaulia">Magnapaulia</a></i></li> <li><i><a href="/wiki/Olorotitan" title="Olorotitan">Olorotitan</a></i></li> <li><i><a href="/wiki/Sahaliyania" title="Sahaliyania">Sahaliyania</a></i></li> <li><i><a href="/wiki/Velafrons" title="Velafrons">Velafrons</a></i></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Saurolophinae" title="Saurolophinae">Saurolophinae</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><i><a href="/wiki/Barsboldia" title="Barsboldia">Barsboldia</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Brachylophosaurini" class="mw-redirect" title="Brachylophosaurini">Brachylophosaurini</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><i><a href="/wiki/Acristavus" title="Acristavus">Acristavus</a></i></li> <li><i><a href="/wiki/Brachylophosaurus" title="Brachylophosaurus">Brachylophosaurus</a></i></li> <li><i><a href="/wiki/Maiasaura" title="Maiasaura">Maiasaura</a></i></li> <li><i><a href="/wiki/Ornatops" title="Ornatops">Ornatops</a></i></li> <li><i><a href="/wiki/Probrachylophosaurus" title="Probrachylophosaurus">Probrachylophosaurus</a></i></li> <li><i><a href="/wiki/Wulagasaurus" title="Wulagasaurus">Wulagasaurus</a></i>?</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Austrokritosauria" class="mw-redirect" title="Austrokritosauria">Austrokritosauria</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><i><a href="/wiki/Bonapartesaurus" title="Bonapartesaurus">Bonapartesaurus</a></i></li> <li><i><a href="/wiki/Huallasaurus" title="Huallasaurus">Huallasaurus</a></i></li> <li><i><a href="/wiki/Kelumapusaura" title="Kelumapusaura">Kelumapusaura</a></i></li> <li><i><a href="/wiki/Secernosaurus" title="Secernosaurus">Secernosaurus</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Kritosaurini" class="mw-redirect" title="Kritosaurini">Kritosaurini</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><i><a href="/wiki/Anasazisaurus" title="Anasazisaurus">Anasazisaurus</a></i>?</li> <li><i><a href="/wiki/Coahuilasaurus" title="Coahuilasaurus">Coahuilasaurus</a></i></li> <li><i><a href="/wiki/Gryposaurus" title="Gryposaurus">Gryposaurus</a></i></li> <li><i><a href="/wiki/Kritosaurus" title="Kritosaurus">Kritosaurus</a></i></li> <li><i><a href="/wiki/Naashoibitosaurus" title="Naashoibitosaurus">Naashoibitosaurus</a></i></li> <li><i><a href="/wiki/Rhinorex" title="Rhinorex">Rhinorex</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Saurolophini" class="mw-redirect" title="Saurolophini">Saurolophini</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><i><a href="/wiki/Augustynolophus" title="Augustynolophus">Augustynolophus</a></i></li> <li><i><a href="/wiki/Prosaurolophus" title="Prosaurolophus">Prosaurolophus</a></i></li> <li><i><a href="/wiki/Saurolophus" title="Saurolophus">Saurolophus</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Edmontosaurini" class="mw-redirect" title="Edmontosaurini">Edmontosaurini</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><i><a href="/wiki/Edmontosaurus" title="Edmontosaurus">Edmontosaurus</a></i></li> <li><i><a href="/wiki/Kamuysaurus" title="Kamuysaurus">Kamuysaurus</a></i></li> <li><i><a href="/wiki/Kerberosaurus" title="Kerberosaurus">Kerberosaurus</a></i></li> <li><i><a href="/wiki/Kundurosaurus" title="Kundurosaurus">Kundurosaurus</a></i></li> <li><i><a href="/wiki/Laiyangosaurus" title="Laiyangosaurus">Laiyangosaurus</a></i></li> <li><i><a href="/wiki/Shantungosaurus" title="Shantungosaurus">Shantungosaurus</a></i></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><span typeof="mw:File"><a href="/wiki/File:Qianjiangsaurus_changshengi.png" class="mw-file-description" title="Qianjiangsaurus changshengi"><img alt="Qianjiangsaurus changshengi" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/ca/Qianjiangsaurus_changshengi.png/100px-Qianjiangsaurus_changshengi.png" decoding="async" width="100" height="35" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/ca/Qianjiangsaurus_changshengi.png/150px-Qianjiangsaurus_changshengi.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/ca/Qianjiangsaurus_changshengi.png/200px-Qianjiangsaurus_changshengi.png 2x" data-file-width="2335" data-file-height="827" /></a></span> <p><span style="display: inline-block; transform: scaleX(-1);"><span typeof="mw:File"><a href="/wiki/File:Tlatolophus.png" class="mw-file-description" title="Tlatolophus galorum"><img alt="Tlatolophus galorum" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Tlatolophus.png/100px-Tlatolophus.png" decoding="async" width="100" height="42" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Tlatolophus.png/150px-Tlatolophus.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Tlatolophus.png/200px-Tlatolophus.png 2x" data-file-width="3536" data-file-height="1500" /></a></span></span> <span typeof="mw:File"><a href="/wiki/File:Life_reconstruction_of_Lambeosaurus_lambei.png" class="mw-file-description" title="Lambeosaurus lambei"><img alt="Lambeosaurus lambei" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Life_reconstruction_of_Lambeosaurus_lambei.png/100px-Life_reconstruction_of_Lambeosaurus_lambei.png" decoding="async" width="100" height="41" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Life_reconstruction_of_Lambeosaurus_lambei.png/150px-Life_reconstruction_of_Lambeosaurus_lambei.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Life_reconstruction_of_Lambeosaurus_lambei.png/200px-Life_reconstruction_of_Lambeosaurus_lambei.png 2x" data-file-width="1160" data-file-height="479" /></a></span> <span typeof="mw:File"><a href="/wiki/File:Gryposaurus%3F_alstasei_profile_reconstruction.jpg" class="mw-file-description" title="Gryposaurus? alsatei"><img alt="Gryposaurus? alsatei" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b1/Gryposaurus%3F_alstasei_profile_reconstruction.jpg/100px-Gryposaurus%3F_alstasei_profile_reconstruction.jpg" decoding="async" width="100" height="43" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b1/Gryposaurus%3F_alstasei_profile_reconstruction.jpg/150px-Gryposaurus%3F_alstasei_profile_reconstruction.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b1/Gryposaurus%3F_alstasei_profile_reconstruction.jpg/200px-Gryposaurus%3F_alstasei_profile_reconstruction.jpg 2x" data-file-width="3961" data-file-height="1684" /></a></span> </p> <span typeof="mw:File"><a href="/wiki/File:Shantungosaurus_life.png" class="mw-file-description" title="Shantungosaurus giganteus"><img alt="Shantungosaurus giganteus" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Shantungosaurus_life.png/100px-Shantungosaurus_life.png" decoding="async" width="100" height="51" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Shantungosaurus_life.png/150px-Shantungosaurus_life.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Shantungosaurus_life.png/200px-Shantungosaurus_life.png 2x" data-file-width="1520" data-file-height="777" /></a></span></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="Related_articles" style="font-size:114%;margin:0 4em">Related articles</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/Ichnotaxon" title="Ichnotaxon">Ichnotaxa</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><i><a href="/wiki/Amblydactylus" title="Amblydactylus">Amblydactylus</a></i></li> <li><i><a href="/wiki/Anomoepus" title="Anomoepus">Anomoepus</a></i></li> <li><i><a href="/wiki/Bonaparteichnium" title="Bonaparteichnium">Bonaparteichnium</a></i></li> <li><i><a href="/wiki/Camptosaurichnus" title="Camptosaurichnus">Camptosaurichnus</a></i></li> <li><i><a href="/wiki/Caririchnium" title="Caririchnium">Caririchnium</a></i></li> <li><i><a href="/wiki/Dakotasaurus" title="Dakotasaurus">Dakotasaurus</a></i></li> <li><i><a href="/wiki/Dinehichnus" title="Dinehichnus">Dinehichnus</a></i></li> <li><i><a href="/wiki/Hadrosaurichnus" title="Hadrosaurichnus">Hadrosaurichnus</a></i></li> <li><i><a href="/wiki/Iguanodontipus" title="Iguanodontipus">Iguanodontipus</a></i></li> <li><i><a href="/wiki/Orcauichnites" title="Orcauichnites">Orcauichnites</a></i></li> <li><i><a href="/wiki/Ornithopodichnites" title="Ornithopodichnites">Ornithopodichnites</a></i></li> <li><i><a href="/wiki/Shiraminesauropus" title="Shiraminesauropus">Shiraminesauropus</a></i></li> <li><i><a href="/wiki/Sousaichnium" title="Sousaichnium">Sousaichnium</a></i></li> <li><i><a href="/wiki/Staurichnium" title="Staurichnium">Staurichnium</a></i></li> <li><i><a href="/wiki/Tetrapodosaurus" title="Tetrapodosaurus">Tetrapodosaurus</a></i></li> <li><i><a href="/wiki/Wintonopus" title="Wintonopus">Wintonopus</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Egg_fossil#Classification" title="Egg fossil">Ootaxa</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><i><a href="/wiki/Guegoolithus" title="Guegoolithus">Guegoolithus</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><i><a href="/wiki/Nomen_dubium" title="Nomen dubium">Nomina dubia</a></i></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/Arstanosaurus" title="Arstanosaurus">Arstanosaurus</a></i></li> <li><i><a href="/wiki/Cionodon" title="Cionodon">Cionodon</a></i></li> <li><i><a href="/wiki/Claorhynchus" title="Claorhynchus">Claorhynchus</a></i>?</li> <li><i><a href="/wiki/Diclonius" title="Diclonius">Diclonius</a></i></li> <li><i><a href="/wiki/Eucercosaurus" title="Eucercosaurus">Eucercosaurus</a></i></li> <li><i><a href="/wiki/Fulgurotherium" title="Fulgurotherium">Fulgurotherium</a></i></li> <li><i><a href="/wiki/Glishades" title="Glishades">Glishades</a></i></li> <li><i><a href="/wiki/Koutalisaurus" title="Koutalisaurus">Koutalisaurus</a></i></li> <li><i><a href="/wiki/Loncosaurus" title="Loncosaurus">Loncosaurus</a></i></li> <li><i><a href="/wiki/Mandschurosaurus" title="Mandschurosaurus">Mandschurosaurus</a></i></li> <li><i><a href="/wiki/Microhadrosaurus" title="Microhadrosaurus">Microhadrosaurus</a></i></li> <li><i><a href="/wiki/Orthomerus" title="Orthomerus">Orthomerus</a></i></li> <li><i><a href="/wiki/Pteropelyx" title="Pteropelyx">Pteropelyx</a></i></li> <li><i><a href="/wiki/Siluosaurus" title="Siluosaurus">Siluosaurus</a></i></li> <li><i><a href="/wiki/Stephanosaurus" title="Stephanosaurus">Stephanosaurus</a></i></li> <li><i><a href="/wiki/Syngonosaurus" title="Syngonosaurus">Syngonosaurus</a></i></li> <li><i><a href="/wiki/Thespesius" title="Thespesius">Thespesius</a></i></li> <li><i><a href="/wiki/Tichosteus" title="Tichosteus">Tichosteus</a></i></li> <li><i><a href="/wiki/Trachodon" title="Trachodon">Trachodon</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other articles</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/Arkharavia" title="Arkharavia">Arkharavia</a></i></li> <li><a href="/wiki/Basturs_Poble_bonebed" title="Basturs Poble bonebed">Basturs Poble bonebed</a></li> <li><a href="/wiki/Dakota_(fossil)" title="Dakota (fossil)">Dakota (fossil)</a></li> <li><a href="/wiki/Hadrosaur_diet" title="Hadrosaur diet">Hadrosaur diet</a></li> <li><a href="/wiki/Hypsilophodont" class="mw-redirect" title="Hypsilophodont">Hypsilophodont</a></li> <li><a href="/wiki/List_of_informal_dinosaur_names" class="mw-redirect" title="List of informal dinosaur names">List of informal dinosaur names</a> (contains hadrosaur <i>nomina nuda</i>)</li> <li><a href="/wiki/Timeline_of_hadrosaur_research" title="Timeline of hadrosaur research">Timeline of hadrosaur research</a></li> <li><a href="/wiki/Edmontosaurus_mummy_AMNH_5060" title="Edmontosaurus mummy AMNH 5060"><i>Edmontosaurus</i> mummy AMNH 5060</a></li> <li><a href="/wiki/Edmontosaurus_mummy_S.M._R4036" class="mw-redirect" title="Edmontosaurus mummy S.M. R4036"><i>Edmontosaurus</i> mummy S.M. R4036</a></li> <li><i><a href="/wiki/Willinakaqe" title="Willinakaqe">Willinakaqe</a></i></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"></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;"><i>Ornithopoda</i></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><span style="white-space:nowrap;"><a href="/wiki/Wikidata" title="Wikidata">Wikidata</a>: <span class="uid"><span class="external"><a href="https://www.wikidata.org/wiki/Q467430" class="extiw" title="wikidata:Q467430">Q467430</a></span></span></span></li> <li><span style="white-space:nowrap;"><a href="/wiki/Wikispecies" title="Wikispecies">Wikispecies</a>: <span class="uid"><span class="external"><a href="https://species.wikimedia.org/wiki/Ornithopoda" class="extiw" title="wikispecies:Ornithopoda">Ornithopoda</a></span></span></span></li> <li><span style="white-space:nowrap;"><a href="/wiki/Encyclopedia_of_Life" title="Encyclopedia of Life">EoL</a>: <span class="uid"><a rel="nofollow" class="external text" href="https://eol.org/pages/4532043">4532043</a></span></span></li> <li><span style="white-space:nowrap;"><a href="/wiki/National_Center_for_Biotechnology_Information" title="National Center for Biotechnology Information">NCBI</a>: <span class="uid"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&id=643746">643746</a></span></span></li> <li><span style="white-space:nowrap;"><a href="/wiki/Open_Tree_of_Life" title="Open Tree of Life">Open Tree of Life</a>: <span class="uid"><a rel="nofollow" class="external text" href="https://tree.opentreeoflife.org/taxonomy/browse?id=609292">609292</a></span></span></li> <li><span style="white-space:nowrap;"><a href="/wiki/Paleobiology_Database" title="Paleobiology Database">Paleobiology Database</a>: <span class="uid"><a rel="nofollow" class="external text" href="https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=147918">147918</a></span></span></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1&useformat=desktop" alt="" width="1" height="1" style="border: none; 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