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</div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Extinct genus of fishes</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)"><i>Ptychoceratodus</i><br /><div style="font-size: 85%;">Temporal range: <a href="/wiki/Early_Triassic" title="Early Triassic">Early Triassic</a>-<a href="/wiki/Middle_Jurassic" title="Middle Jurassic">Middle Jurassic</a><br />~<span class="noprint"><span style="display:inline-block;"></span><span style="display:inline-block;">251–163 <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:17.583076923077px;"><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:55.22px; width:14.807692307692px;"><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:70.027692307692px; width:7.9470769230769px;"><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:77.974769230769px; width:20.564923076923px;"><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:98.539692307692px; width:20.294153846154px;"><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:19.732307692308px;"><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:171.56615384615px; width:26.095384615385px;"><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:14.540307692308px;"><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:212.20184615385px; width:6.9249230769231px;"><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:135.04615384615px; width:29.784615384615px; background-color:#360; opacity:0.42;"></div> <div style="position:absolute; height:8px; left:135.04615384615px; width:29.784615384615px; background-color:#360; opacity:1;"></div> <div style="position:absolute; height:6px; top:1px; left:136.04615384615px; width:27.784615384615px; 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:Ptychoceratodus_serratus.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/76/Ptychoceratodus_serratus.JPG/220px-Ptychoceratodus_serratus.JPG" decoding="async" width="220" height="168" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/76/Ptychoceratodus_serratus.JPG/330px-Ptychoceratodus_serratus.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/76/Ptychoceratodus_serratus.JPG/440px-Ptychoceratodus_serratus.JPG 2x" data-file-width="2123" data-file-height="1622" /></a></span> </td></tr> <tr> <td colspan="2" style="text-align: center; font-size: 88%">Skull roof bones and jaws of <i>Ptychoceratodus serratus</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/Ptychoceratodus" 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/Sarcopterygii" title="Sarcopterygii">Sarcopterygii</a> </td></tr> <tr> <td>Class: </td> <td><a href="/wiki/Lungfish" title="Lungfish">Dipnoi</a> </td></tr> <tr> <td>Family: </td> <td><span style="font-style:normal;font-weight:normal;">†</span><a class="mw-selflink selflink">Ptychoceratodontidae</a><br /><small>Martin, 1982</small> </td></tr> <tr> <td>Genus: </td> <td><span style="font-style:normal;font-weight:normal;">†</span><a class="mw-selflink selflink"><i>Ptychoceratodus</i></a><br /><small><a href="/wiki/Otto_Jaekel" title="Otto Jaekel">Jaekel</a>, 1926</small> </td></tr> <tr> <th colspan="2" style="color:inherit; text-align: center; background-color: rgb(235,235,210)"><a href="/wiki/Type_species" title="Type species">Type species</a> </th></tr> <tr> <td colspan="2" style="text-align: center"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i>Ptychoceratodus phillipsi</i><br /><div style="font-size: 85%;"><a href="/wiki/Louis_Agassiz" title="Louis Agassiz">Agassiz</a>, 1837</div> </td></tr> <tr> <th colspan="2" style="color:inherit; text-align: center; background-color: rgb(235,235,210)">Species </th></tr> <tr> <td colspan="2" style="text-align: left"> <style data-mw-deduplicate="TemplateStyles:r1214851843">.mw-parser-output .hidden-begin{box-sizing:border-box;width:100%;padding:5px;border:none;font-size:95%}.mw-parser-output .hidden-title{font-weight:bold;line-height:1.6;text-align:left}.mw-parser-output .hidden-content{text-align:left}@media all and (max-width:500px){.mw-parser-output .hidden-begin{width:auto!important;clear:none!important;float:none!important}}</style><div class="hidden-begin mw-collapsible mw-collapsed" style=""><div class="hidden-title skin-nightmode-reset-color" style="text-align:center;"></div><div class="hidden-content mw-collapsible-content" style=""> <ul><li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i>P. acutus</i> <small>Priem, 1924 (<i>vide</i> Martin, 1982)</small><sup id="cite_ref-Martin1982_1-0" class="reference"><a href="#cite_note-Martin1982-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i>P. cionei</i> <small>Apestigua <i>et al.</i>, 2007</small><sup id="cite_ref-Apestigua2007_2-0" class="reference"><a href="#cite_note-Apestigua2007-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i>P. concinnus</i> <small>Meyer and Pleninger, 1844 (<i>vide</i> Martin, 1982)</small><sup id="cite_ref-Martin1982_1-1" class="reference"><a href="#cite_note-Martin1982-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><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></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i>P. cuyanus</i> <small>Agnolin <i>et al.</i>, 2017</small><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></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i>P. donensis</i> <small>Vorobyeva and Minikh, 1968 (<i>vide</i> Martin, 1982)</small><sup id="cite_ref-Martin1982_1-2" class="reference"><a href="#cite_note-Martin1982-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i>P. gracilis</i> <small>Vorobyeva and Minikh, 1968</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>P. oldhami</i> <small>Bhat & Ray, 2018</small><sup id="cite_ref-Bhat2018_5-0" class="reference"><a href="#cite_note-Bhat2018-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i>P. ornatus</i> <small>Broom, 1908 (<i>vide</i> Martin, 1982)</small><sup id="cite_ref-Martin1982_1-3" class="reference"><a href="#cite_note-Martin1982-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i>P. phillipsi</i> <small>Agassiz, 1837 (<i>vide</i> Martin, 1982)</small><sup id="cite_ref-Martin1982_1-4" class="reference"><a href="#cite_note-Martin1982-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Agassiz1836_6-0" class="reference"><a href="#cite_note-Agassiz1836-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i>P. rectangulus</i> <small>Linck, 1936 (<i>vide</i> Martin, 1982)</small><sup id="cite_ref-Martin1982_1-5" class="reference"><a href="#cite_note-Martin1982-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i>P. serratus</i> <small>Agassiz, 1838 (<i>vide</i> Apestigua <i>et al.</i>, 2007)</small><sup id="cite_ref-Apestigua2007_2-1" class="reference"><a href="#cite_note-Apestigua2007-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Agassiz1836_6-1" class="reference"><a href="#cite_note-Agassiz1836-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i>P. szecuhanensis</i> <small><a href="/wiki/Yang_Zhongjian" title="Yang Zhongjian">Young</a>, 1942 (<i>vide</i> Martin, 1982)</small><sup id="cite_ref-Martin1982_1-6" class="reference"><a href="#cite_note-Martin1982-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i>P. viropa</i> <small>Oldham, 1859 (<i>vide</i> Martin, 1982)</small><sup id="cite_ref-Martin1982_1-7" class="reference"><a href="#cite_note-Martin1982-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></li> <li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i>P. wichmanni</i> <small>Apestigua <i>et al.</i>, 2007</small><sup id="cite_ref-Apestigua2007_2-2" class="reference"><a href="#cite_note-Apestigua2007-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li></ul> </div></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> </th></tr> <tr> <td colspan="2" style="text-align: left"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214851843"><div class="hidden-begin mw-collapsible mw-collapsed" style=""><div class="hidden-title skin-nightmode-reset-color" style="text-align:center;"></div><div class="hidden-content mw-collapsible-content" style=""> <ul><li><i><a href="/wiki/Ceratodus_(genus)" class="mw-redirect" title="Ceratodus (genus)">Ceratodus</a> acutus</i> <small>Priem, 1924</small></li> <li><i>Ceratodus concinnus</i> <small>Meyer & Pleninger, 1844</small></li> <li><i>Ceratodus donensis</i> <small>Vorobyeva and Minikh, 1968</small></li> <li><i>Ceratodus ornatus</i> <small><a href="/wiki/Robert_Broom" title="Robert Broom">Broom</a>, 1908</small></li> <li><i>Ceratodus phillipsi</i> <small><a href="/wiki/Louis_Agassiz" title="Louis Agassiz">Agassiz</a>, 1836</small></li> <li><i>Ceratodus rectangulus</i> <small>Linck, 1936</small></li> <li><i>Ceratodus serratus</i> <small>Agassiz, 1838</small></li> <li><i>Ceratodus szechuanensis</i> <small>Young, 1942</small></li> <li><i><a href="/wiki/Ferganoceratodus" title="Ferganoceratodus">Ferganoceratodus</a> szechuanensis</i> <small>Young, 1942</small></li> <li><i>Ceratodus viropa</i> <small>Oldham, 1859</small></li></ul> </div></div> </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><i><b>Ptychoceratodus</b></i> is an extinct genus of <a href="/wiki/Lungfish" title="Lungfish">lungfish</a> living from <a href="/wiki/Early_Triassic" title="Early Triassic">Early Triassic</a> to <a href="/wiki/Middle_Jurassic" title="Middle Jurassic">Middle Jurassic</a>. It was established by <a href="/wiki/Otto_Jaekel" title="Otto Jaekel">Otto Jaekel</a> for one species (<i>P. runcinatus</i>), transferred from <i><a href="/wiki/Ceratodus_(genus)" class="mw-redirect" title="Ceratodus (genus)">Ceratodus</a></i> genus.<sup id="cite_ref-:0_8-0" class="reference"><a href="#cite_note-:0-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> Type species is <i>P. serratus</i> from the <a href="/wiki/Middle_Triassic" title="Middle Triassic">Middle Triassic</a> of Switzerland and Germany.<sup id="cite_ref-:0_8-1" class="reference"><a href="#cite_note-:0-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:1_9-0" class="reference"><a href="#cite_note-:1-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> <i>Ptychoceratodus</i> had two pairs of massive dental plates, bearing 4-6 acute ridges. Its <a href="/wiki/Skull_roof" title="Skull roof">skull roof</a> was composed from massive, plate-like bones. In the central part of skull roof was localized an unossified <a href="/wiki/Fenestra" title="Fenestra">fenestra</a>. Most of the <i>Ptychoceratodus</i> findings are isolated dental plates, some associated with jaws. Other parts of skull or postcranial skeleton are relatively rarely found as fossils. The anatomy of skull is the best recognized in <i>P. serratus</i>,<sup id="cite_ref-:1_9-1" class="reference"><a href="#cite_note-:1-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> whereas less complete cranial material is available also for <i>P. concinuus, P. phillipsi,</i> and <i>P. rectangulus</i>.<sup id="cite_ref-:3_10-0" class="reference"><a href="#cite_note-:3-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> Although <i>Ptychoceratodus</i> is known exclusively from the <a href="/wiki/Triassic" title="Triassic">Triassic</a> and <a href="/wiki/Jurassic" title="Jurassic">Jurassic</a>,<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> there were also <a href="/wiki/Cretaceous" title="Cretaceous">Cretaceous</a> specimens referred to this genus. However, they are more often regarded as representants of <i><a href="/wiki/Metaceratodus" title="Metaceratodus">Metaceratodus</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> <i>Ptychoceratodus</i> is the only member of the family <b>Ptychoceratodontidae</b>.<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><sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> The first named species is <i>P. phillipsi</i> by <a href="/wiki/Louis_Agassiz" title="Louis Agassiz">Louis Agassiz</a> in 1837 as a species of <i>Ceratodus</i> and later moved to the genus <i>Ptychoceratodus</i>.<sup id="cite_ref-Agassiz1836_6-2" class="reference"><a href="#cite_note-Agassiz1836-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> Occurrences of <i>Ptychoceratodus</i> come mainly from Europe.<sup id="cite_ref-:2_15-0" class="reference"><a href="#cite_note-:2-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:0_8-2" class="reference"><a href="#cite_note-:0-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> However, occurrences from other continents suggest it was dispersed globally during the Triassic.<sup id="cite_ref-:2_15-1" class="reference"><a href="#cite_note-:2-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> After 2010, the new fossil material behind the Europe was reported from South America,<sup id="cite_ref-:4_16-0" class="reference"><a href="#cite_note-:4-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> India,<sup id="cite_ref-Bhat2018_5-1" class="reference"><a href="#cite_note-Bhat2018-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> and <a href="/wiki/Greenland" title="Greenland">Greenland</a><sup id="cite_ref-:3_10-1" class="reference"><a href="#cite_note-:3-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Fossil_distribution">Fossil distribution</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ptychoceratodus&action=edit&section=1" title="Edit section: Fossil distribution"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Fossils of <i>Ptychoceratodus</i> have been found in:<sup id="cite_ref-FWPtychoceratodus_17-0" class="reference"><a href="#cite_note-FWPtychoceratodus-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> </p> <dl><dt>Triassic</dt></dl> <ul><li><a href="/wiki/Burgersdorp_Formation" class="mw-redirect" title="Burgersdorp Formation">Burgersdorp Formation</a>, (<a href="/wiki/Cynognathus_Assemblage_Zone" title="Cynognathus Assemblage Zone"><i>Cynognathus</i> Assemblage Zone</a>), Early Triassic (<a href="/wiki/Olenekian" title="Olenekian">Olenekian</a>), South Africa (<i>?Ptychoceratodus</i> sp.)</li> <li><a href="/wiki/Lipovskaya_Formation" class="mw-redirect" title="Lipovskaya Formation">Lipovskaya Formation</a>, Early Triassic (Olenekian), Russia (<i>P. donensis</i>)</li> <li><a href="/wiki/Erfurt_Formation" title="Erfurt Formation">Erfurt Formation</a>, Middle Triassic (<a href="/wiki/Ladinian" title="Ladinian">Ladinian</a>), Germany (<i>P. serratus</i>)<sup id="cite_ref-:1_9-2" class="reference"><a href="#cite_note-:1-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup></li> <li><a href="/w/index.php?title=Weser_Formation&action=edit&redlink=1" class="new" title="Weser Formation (page does not exist)">Weser Formation</a>, <a href="/wiki/Carnian" title="Carnian">Carnian</a>, Germany (<i>P. concinnus</i>)</li> <li><a href="/w/index.php?title=Potrerillos_Formation,_Argentina&action=edit&redlink=1" class="new" title="Potrerillos Formation, Argentina (page does not exist)">Potrerillos Formation</a>, <a href="/wiki/Carnian" title="Carnian">Carnian</a>, Argentina (<i>P. cuyanus</i>)<sup id="cite_ref-:4_16-1" class="reference"><a href="#cite_note-:4-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Tiki_Formation" title="Tiki Formation">Tiki Formation</a>, Carnian, India (<i>P. oldhami</i>)<sup id="cite_ref-Bhat2018_5-2" class="reference"><a href="#cite_note-Bhat2018-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Marnes_de_Ch%C3%A2lins_Formation" class="mw-redirect" title="Marnes de Châlins Formation">Marnes de Châlins Formation</a>, <a href="/wiki/Norian" title="Norian">Norian</a> France (<i>P. rectangulus</i>)<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/L%C3%B6wenstein_Formation" title="Löwenstein Formation">Löwenstein Formation</a>, <a href="/wiki/Alaunian" class="mw-redirect" title="Alaunian">Alaunian</a> (Norian), Germany (<i>P. rectangulus</i>)</li> <li><a href="/w/index.php?title=Gr%C3%A8s_%C3%A0_Avicula_contorta_Formation&action=edit&redlink=1" class="new" title="Grès à Avicula contorta Formation (page does not exist)">Grès à Avicula contorta Formation</a>, <a href="/wiki/Rhaetian" title="Rhaetian">Rhaetian</a>, France (<i>P. phillipsi</i>)</li> <li><a href="/wiki/Santa_Maria_Formation" title="Santa Maria Formation">Santa Maria Formation</a>, <a href="/wiki/Norian" title="Norian">Norian</a>, Brazil (<i>P. cf. phillipsi</i>)<sup id="cite_ref-:4_16-2" class="reference"><a href="#cite_note-:4-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Fleming_Fjord_Formation" title="Fleming Fjord Formation">Fleming Fjord Formation</a>, Norian, Greenland (<i>P. rectangulus</i>)<sup id="cite_ref-:3_10-2" class="reference"><a href="#cite_note-:3-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup></li> <li><a href="/w/index.php?title=Grabowa_Formation&action=edit&redlink=1" class="new" title="Grabowa Formation (page does not exist)">Grabowa Formation</a>, Carnian, Poland (<i>P. roemeri</i>)<sup id="cite_ref-:0_8-3" class="reference"><a href="#cite_note-:0-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup></li></ul> <dl><dt>Jurassic</dt></dl> <ul><li><a href="/wiki/Inferior_Oolite" title="Inferior Oolite">Inferior Oolite Group</a>, <a href="/wiki/Middle_Jurassic" title="Middle Jurassic">Middle Jurassic</a>, <a href="/wiki/England" title="England">England</a> (<i>P. phillipsi</i>)</li></ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ptychoceratodus&action=edit&section=2" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Sarcopterygii" title="Sarcopterygii">Sarcopterygii</a></li> <li><a href="/wiki/List_of_sarcopterygians" class="mw-redirect" title="List of sarcopterygians">List of sarcopterygians</a></li> <li><a href="/wiki/List_of_prehistoric_bony_fish" class="mw-redirect" title="List of prehistoric bony fish">List of prehistoric bony fish</a></li></ul> <div style="clear:both;" class=""></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=Ptychoceratodus&action=edit&section=3" 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 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.hlist td ol,.mw-parser-output .navbox .hlist td ul,.mw-parser-output .navbox td.hlist dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}</style></div><div role="navigation" class="navbox" aria-labelledby="Dipnomorpha257" 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"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Dipnomorpha" title="Template:Dipnomorpha"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Dipnomorpha" title="Template talk:Dipnomorpha"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Dipnomorpha" title="Special:EditPage/Template:Dipnomorpha"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Dipnomorpha257" style="font-size:114%;margin:0 4em"><a href="/wiki/Dipnomorpha" class="mw-redirect" title="Dipnomorpha">Dipnomorpha</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:_Osteichthyes_*_Clade:_Sarcopterygii_*_Clade:_Rhipidistia257" 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/Osteichthyes" title="Osteichthyes">Osteichthyes</a></li> <li><i>Clade</i>: <a href="/wiki/Sarcopterygii" title="Sarcopterygii">Sarcopterygii</a></li> <li><i>Clade</i>: <a href="/wiki/Rhipidistia" title="Rhipidistia">Rhipidistia</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="Gnathostomata38" scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Gnathostomata" title="Gnathostomata">Gnathostomata</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:Gnathostomata" title="Template:Gnathostomata">Gnathostomata</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Dipnomorpha" class="mw-redirect" title="Dipnomorpha">Dipnomorpha</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><tr><td class="navbox-abovebelow" colspan="2" style="background:#ddddff;font-size:115%"><div><b><a href="/wiki/Dipnomorpha" class="mw-redirect" title="Dipnomorpha">Dipnomorpha</a></b></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 navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Dipnomorpha102" scope="row" class="navbox-group" style="width:1%"><div style="position: absolute; transform: translate(-50%,-50%) rotate(270deg);"><a href="/wiki/Dipnomorpha" class="mw-redirect" title="Dipnomorpha">Dipnomorpha</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><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i><a href="/w/index.php?title=Arquatichthys&action=edit&redlink=1" class="new" title="Arquatichthys (page does not exist)">Arquatichthys</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/Powichthys" title="Powichthys">Powichthys</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Porolepiformes" title="Porolepiformes">Porolepiformes</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/Duffichthys" title="Duffichthys">Duffichthys</a></i></li> <li><i><a href="/w/index.php?title=Durialepis&action=edit&redlink=1" class="new" title="Durialepis (page does not exist)">Durialepis</a></i></li> <li><i><a href="/wiki/Glyptolepis_(fish)" title="Glyptolepis (fish)">Glyptolepis</a></i></li> <li><i><a href="/wiki/Hamodus" title="Hamodus">Hamodus</a></i></li> <li><i><a href="/wiki/Heimenia" title="Heimenia">Heimenia</a></i></li> <li><i><a href="/wiki/Holoptychius" title="Holoptychius">Holoptychius</a></i></li> <li><i><a href="/wiki/Laccognathus" title="Laccognathus">Laccognathus</a></i></li> <li><i><a href="/wiki/Porolepis" title="Porolepis">Porolepis</a></i></li> <li><i><a href="/wiki/Pseudosauripterus" title="Pseudosauripterus">Pseudosauripterus</a></i></li> <li><i><a href="/wiki/Quebecius" title="Quebecius">Quebecius</a></i></li> <li><i><a href="/wiki/Ventalepis" title="Ventalepis">Ventalepis</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/Lungfish" title="Lungfish">Dipnoi</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><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/Ctenodus" title="Ctenodus">Ctenodus</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/Conchopoma" title="Conchopoma">Conchopoma</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/Diabolepis" title="Diabolepis">Diabolepis</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="/w/index.php?title=Dianodipterus&action=edit&redlink=1" class="new" title="Dianodipterus (page does not exist)">Dianodipterus</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/Eoctenodus" title="Eoctenodus">Eoctenodus</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/Gosfordia" title="Gosfordia">Gosfordia</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/Ichnomylax" title="Ichnomylax">Ichnomylax</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/Iranorhynchus" title="Iranorhynchus">Iranorhynchus</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/Isityumzi" title="Isityumzi">Isityumzi</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="/w/index.php?title=Janvierpaucidentes&action=edit&redlink=1" class="new" title="Janvierpaucidentes (page does not exist)">Janvierpaucidentes</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/Megapleuron" title="Megapleuron">Megapleuron</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/Oervigia" title="Oervigia">Oervigia</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/Orlovichthys" title="Orlovichthys">Orlovichthys</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/Proceratodus" title="Proceratodus">Proceratodus</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/Rhinodipterus" title="Rhinodipterus">Rhinodipterus</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/Sagenodus" title="Sagenodus">Sagenodus</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/Straitonia" title="Straitonia">Straitonia</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/Tarachomylax" title="Tarachomylax">Tarachomylax</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/Tranodis" title="Tranodis">Tranodis</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/Westollrhynchus" title="Westollrhynchus">Westollrhynchus</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/Youngolepis" title="Youngolepis">Youngolepis</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Uranolophidae" title="Uranolophidae">Uranolophidae</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/Melanognathus" title="Melanognathus">Melanognathus</a></i></li> <li><i><a href="/wiki/Uranolophus" title="Uranolophus">Uranolophus</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Dipnorhynchidae" title="Dipnorhynchidae">Dipnorhynchidae</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/Dipnorhynchus" title="Dipnorhynchus">Dipnorhynchus</a></i></li> <li><i><a href="/wiki/Ganorhynchus" title="Ganorhynchus">Ganorhynchus</a></i></li> <li><i><a href="/w/index.php?title=Speonesydrion&action=edit&redlink=1" class="new" title="Speonesydrion (page does not exist)">Speonesydrion</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Stomiahykidae" title="Stomiahykidae">Stomiahykidae</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/Archaeonectes" title="Archaeonectes">Archaeonectes</a></i></li> <li><i><a href="/wiki/Stomiahykus" title="Stomiahykus">Stomiahykus</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Chirodipteridae" title="Chirodipteridae">Chirodipteridae</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/Chirodipterus" title="Chirodipterus">Chirodipterus</a></i></li> <li><i><a href="/wiki/Gogodipterus" title="Gogodipterus">Gogodipterus</a></i></li> <li><i><a href="/wiki/Palaedaphus" title="Palaedaphus">Palaedaphus</a></i></li> <li><i><a href="/wiki/Pillararhynchus" title="Pillararhynchus">Pillararhynchus</a></i></li> <li><i><a href="/wiki/Sorbitorhynchus" title="Sorbitorhynchus">Sorbitorhynchus</a></i></li> <li><i><a href="/wiki/Sunwapta_(fish)" title="Sunwapta (fish)">Sunwapta</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Holodontidae&action=edit&redlink=1" class="new" title="Holodontidae (page does not exist)">Holodontidae</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="/w/index.php?title=Asthenorhynchus&action=edit&redlink=1" class="new" title="Asthenorhynchus (page does not exist)">Asthenorhynchus</a></i></li> <li><i><a href="/wiki/Griphognathus" title="Griphognathus">Griphognathus</a></i></li> <li><i><a href="/wiki/Holodipterus" title="Holodipterus">Holodipterus</a></i></li> <li><i><a href="/wiki/Iowadipterus" title="Iowadipterus">Iowadipterus</a></i></li> <li><i><a href="/w/index.php?title=Robinsondipterus&action=edit&redlink=1" class="new" title="Robinsondipterus (page does not exist)">Robinsondipterus</a></i></li> <li><i><a href="/wiki/Xeradipterus" title="Xeradipterus">Xeradipterus</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Dipteridae" title="Dipteridae">Dipteridae</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/Amadeodipterus" title="Amadeodipterus">Amadeodipterus</a></i></li> <li><i><a href="/wiki/Conchodus" title="Conchodus">Conchodus</a></i></li> <li><i><a href="/wiki/Dipterus" title="Dipterus">Dipterus</a></i></li> <li><i><a href="/wiki/Howidipterus" title="Howidipterus">Howidipterus</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Fleurantiidae&action=edit&redlink=1" class="new" title="Fleurantiidae (page does not exist)">Fleurantiidae</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/Barwickia" title="Barwickia">Barwickia</a></i></li> <li><i><a href="/wiki/Fleurantia" title="Fleurantia">Fleurantia</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Rhynchodipteridae" title="Rhynchodipteridae">Rhynchodipteridae</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/Rhynchodipterus" title="Rhynchodipterus">Rhynchodipterus</a></i></li> <li><i><a href="/wiki/Soederberghia" title="Soederberghia">Soederberghia</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Phaneropleuridae&action=edit&redlink=1" class="new" title="Phaneropleuridae (page does not exist)">Phaneropleuridae</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/Andreyevichthys" title="Andreyevichthys">Andreyevichthys</a></i></li> <li><i><a href="/wiki/Nielsenia" title="Nielsenia">Nielsenia</a></i></li> <li><i><a href="/wiki/Phaneropleuron" title="Phaneropleuron">Phaneropleuron</a></i></li> <li><i><a href="/wiki/Pentlandia" title="Pentlandia">Pentlandia</a></i></li> <li><i><a href="/wiki/Scaumenacia" title="Scaumenacia">Scaumenacia</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/w/index.php?title=Uronemidae&action=edit&redlink=1" class="new" title="Uronemidae (page does not exist)">Uronemidae</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/Ganopristodus" title="Ganopristodus">Ganopristodus</a></i></li> <li><i><a href="/w/index.php?title=Uronemus&action=edit&redlink=1" class="new" title="Uronemus (page does not exist)">Uronemus</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/Ceratodontoidei" class="mw-redirect" title="Ceratodontoidei">Ceratodontoidei</a></div></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i><a href="/wiki/Ferganoceratodus" title="Ferganoceratodus">Ferganoceratodus</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/Paraceratodus" title="Paraceratodus">Paraceratodus</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 class="mw-selflink selflink">Ptychoceratodus</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Neoceratodontidae" title="Neoceratodontidae">Neoceratodontidae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><i><a href="/w/index.php?title=Archaeoceratodus&action=edit&redlink=1" class="new" title="Archaeoceratodus (page does not exist)">Archaeoceratodus</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/Asiatoceratodus" title="Asiatoceratodus">Asiatoceratodus</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/Mioceratodus" title="Mioceratodus">Mioceratodus</a></i></li> <li><i><a href="/wiki/Neoceratodus" title="Neoceratodus">Neoceratodus</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Ceratodontidae" title="Ceratodontidae">Ceratodontidae</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/Arganodus" title="Arganodus">Arganodus</a></i></li> <li><i><a href="/w/index.php?title=Ariguna&action=edit&redlink=1" class="new" title="Ariguna (page does not exist)">Ariguna</a></i></li> <li><i><a href="/wiki/Ceratodus" title="Ceratodus">Ceratodus</a></i></li> <li><i><a href="/w/index.php?title=Epiceratodus&action=edit&redlink=1" class="new" title="Epiceratodus (page does not exist)">Epiceratodus</a></i></li> <li><i><a href="/w/index.php?title=Lupaceratodus&action=edit&redlink=1" class="new" title="Lupaceratodus (page does not exist)">Lupaceratodus</a></i></li> <li><i><a href="/wiki/Metaceratodus" title="Metaceratodus">Metaceratodus</a></i></li> <li><i><a href="/wiki/Microceratodus" title="Microceratodus">Microceratodus</a></i>?</li> <li><i><a href="/wiki/Potamoceratodus" title="Potamoceratodus">Potamoceratodus</a></i></li> <li><i><a href="/wiki/Retodus" title="Retodus">Retodus</a></i></li> <li><i><a href="/w/index.php?title=Tellerodus&action=edit&redlink=1" class="new" title="Tellerodus (page does not exist)">Tellerodus</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><abbr title="Extinct" aria-label="Extinct" style="border: none; text-decoration: none; cursor: inherit; font-weight: normal; font-style: normal;">†</abbr><a href="/wiki/Gnathorhizidae" title="Gnathorhizidae">Gnathorhizidae</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/Beltanodus" title="Beltanodus">Beltanodus</a></i></li> <li><i><a href="/wiki/Gnathorhiza" title="Gnathorhiza">Gnathorhiza</a></i></li> <li><i><a href="/wiki/Microceratodus" title="Microceratodus">Microceratodus</a></i>?</li> <li><i><a href="/wiki/Monongahela_(fish)" title="Monongahela (fish)">Monongahela</a></i></li> <li><i><a href="/wiki/Namatozodia" title="Namatozodia">Namatozodia</a></i></li> <li><i><a href="/wiki/Palaeophichthys" title="Palaeophichthys">Palaeophichthys</a></i>?</li> <li><i><a href="/w/index.php?title=Persephonichthys&action=edit&redlink=1" class="new" title="Persephonichthys (page does not exist)">Persephonichthys</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Lepidosirenidae" class="mw-redirect" title="Lepidosirenidae">Lepidosirenidae</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/South_American_lungfish" title="South American lungfish">Lepidosiren</a></i></li> <li><i><a href="/wiki/Protopterus" title="Protopterus">Protopterus</a></i></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td><td class="noviewer navbox-image" rowspan="1" style="width:1px;padding:0 0 0 2px"><div><span typeof="mw:File"><a href="/wiki/File:Quebecius.jpg" class="mw-file-description" title="Quebecius quebecensis"><img alt="Quebecius quebecensis" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/09/Quebecius.jpg/140px-Quebecius.jpg" decoding="async" width="140" height="52" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/09/Quebecius.jpg/210px-Quebecius.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/09/Quebecius.jpg/280px-Quebecius.jpg 2x" data-file-width="1280" data-file-height="477" /></a></span> <p><span typeof="mw:File"><a href="/wiki/File:Dipterus_valenciennesi1.jpg" class="mw-file-description" title="Dipterus valenciennesi"><img alt="Dipterus valenciennesi" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e1/Dipterus_valenciennesi1.jpg/140px-Dipterus_valenciennesi1.jpg" decoding="async" width="140" height="44" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e1/Dipterus_valenciennesi1.jpg/210px-Dipterus_valenciennesi1.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e1/Dipterus_valenciennesi1.jpg/280px-Dipterus_valenciennesi1.jpg 2x" data-file-width="1425" data-file-height="445" /></a></span> <span typeof="mw:File"><a href="/wiki/File:Phaneropleuron_andersoni.jpg" class="mw-file-description" title="Phaneropleuron andersoni"><img alt="Phaneropleuron andersoni" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b7/Phaneropleuron_andersoni.jpg/140px-Phaneropleuron_andersoni.jpg" decoding="async" width="140" height="37" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b7/Phaneropleuron_andersoni.jpg/210px-Phaneropleuron_andersoni.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b7/Phaneropleuron_andersoni.jpg/280px-Phaneropleuron_andersoni.jpg 2x" data-file-width="1500" data-file-height="393" /></a></span> <span style="display: inline-block; transform: scaleX(-1);"><span typeof="mw:File"><a href="/wiki/File:Barramunda_coloured.jpg" class="mw-file-description" title="Neoceratodus forsteri"><img alt="Neoceratodus forsteri" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Barramunda_coloured.jpg/140px-Barramunda_coloured.jpg" decoding="async" width="140" height="38" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Barramunda_coloured.jpg/210px-Barramunda_coloured.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Barramunda_coloured.jpg/280px-Barramunda_coloured.jpg 2x" data-file-width="791" data-file-height="214" /></a></span></span> <span typeof="mw:File"><a href="/wiki/File:Retodus_restoration.png" class="mw-file-description" title="Retodus tuberculatus"><img alt="Retodus tuberculatus" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/00/Retodus_restoration.png/140px-Retodus_restoration.png" decoding="async" width="140" height="57" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/00/Retodus_restoration.png/210px-Retodus_restoration.png 1.5x, //upload.wikimedia.org/wikipedia/commons/0/00/Retodus_restoration.png 2x" data-file-width="247" data-file-height="100" /></a></span> <span style="display: inline-block; transform: scaleX(-1);"><span typeof="mw:File"><a href="/wiki/File:GnathorhizaDB.jpg" class="mw-file-description" title="Gnathorhiza sp."><img alt="Gnathorhiza sp." src="//upload.wikimedia.org/wikipedia/commons/thumb/7/76/GnathorhizaDB.jpg/140px-GnathorhizaDB.jpg" decoding="async" width="140" height="47" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/76/GnathorhizaDB.jpg/210px-GnathorhizaDB.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/76/GnathorhizaDB.jpg/280px-GnathorhizaDB.jpg 2x" data-file-width="2541" data-file-height="859" /></a></span></span> <span style="display: inline-block; transform: scaleX(-1);"><span typeof="mw:File"><a href="/wiki/File:Protopterus_dolloi_Boulenger2.jpg" class="mw-file-description" title="Protopterus dolloi"><img alt="Protopterus dolloi" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/88/Protopterus_dolloi_Boulenger2.jpg/140px-Protopterus_dolloi_Boulenger2.jpg" decoding="async" width="140" height="44" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/88/Protopterus_dolloi_Boulenger2.jpg/210px-Protopterus_dolloi_Boulenger2.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/88/Protopterus_dolloi_Boulenger2.jpg/280px-Protopterus_dolloi_Boulenger2.jpg 2x" data-file-width="2923" data-file-height="909" /></a></span></span> </p> <span style="display: inline-block; transform: scaleX(-1);"><span typeof="mw:File"><a href="/wiki/File:Lepidosiren_paradoxa1.jpg" class="mw-file-description" title="Lepidosiren paradoxa"><img alt="Lepidosiren paradoxa" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0b/Lepidosiren_paradoxa1.jpg/140px-Lepidosiren_paradoxa1.jpg" decoding="async" width="140" height="49" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0b/Lepidosiren_paradoxa1.jpg/210px-Lepidosiren_paradoxa1.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0b/Lepidosiren_paradoxa1.jpg/280px-Lepidosiren_paradoxa1.jpg 2x" data-file-width="1200" data-file-height="419" /></a></span></span></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_identifiers2373" 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_identifiers2373" 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>Ptychoceratodus</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/Q7257140" class="extiw" title="wikidata:Q7257140">Q7257140</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/Ptychoceratodus" class="extiw" title="wikispecies:Ptychoceratodus">Ptychoceratodus</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/4654554">4654554</a></span></span></li> <li><span style="white-space:nowrap;"><a href="/wiki/Global_Biodiversity_Information_Facility" title="Global Biodiversity Information Facility">GBIF</a>: <span class="uid"><a rel="nofollow" class="external text" href="https://www.gbif.org/species/4838237">4838237</a></span></span></li> <li><span style="white-space:nowrap;"><a href="/wiki/Interim_Register_of_Marine_and_Nonmarine_Genera" title="Interim Register of Marine and Nonmarine Genera">IRMNG</a>: <span class="uid"><a rel="nofollow" class="external text" href="https://www.irmng.org/aphia.php?p=taxdetails&id=1248932">1248932</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=4117005">4117005</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=65066">65066</a></span></span></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align: left;"><i>Ptychoceratodontidae</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><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/Q21348522" class="extiw" title="wikidata:Q21348522">Q21348522</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/Ptychoceratodontidae" class="extiw" title="wikispecies:Ptychoceratodontidae">Ptychoceratodontidae</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/4654552">4654552</a></span></span></li> <li><span style="white-space:nowrap;"><a href="/wiki/Global_Biodiversity_Information_Facility" title="Global Biodiversity Information Facility">GBIF</a>: <span class="uid"><a rel="nofollow" class="external text" href="https://www.gbif.org/species/4838236">4838236</a></span></span></li> <li><span style="white-space:nowrap;"><a href="/wiki/Interim_Register_of_Marine_and_Nonmarine_Genera" title="Interim Register of Marine and Nonmarine Genera">IRMNG</a>: <span class="uid"><a rel="nofollow" class="external text" href="https://www.irmng.org/aphia.php?p=taxdetails&id=118831">118831</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=3621413">3621413</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=57671">57671</a></span></span></li></ul> </div></td></tr></tbody></table></div> <p><br /> </p> <style data-mw-deduplicate="TemplateStyles:r1271159938">.mw-parser-output .asbox{position:relative;overflow:hidden}.mw-parser-output .asbox table{background:transparent}.mw-parser-output .asbox p{margin:0}.mw-parser-output .asbox p+p{margin-top:0.25em}.mw-parser-output .asbox-body{font-style:italic}.mw-parser-output .asbox-note{font-size:smaller}.mw-parser-output .asbox .navbar{position:absolute;top:-0.75em;right:1em;display:none}.mw-parser-output :not(p):not(.asbox)+style+.asbox,.mw-parser-output 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You can help Wikipedia by <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Ptychoceratodus&action=edit">expanding it</a>.</p></td></tr></tbody></table><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:Paleo-lobefinned-fish-stub" title="Template:Paleo-lobefinned-fish-stub"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Paleo-lobefinned-fish-stub" title="Template talk:Paleo-lobefinned-fish-stub"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Paleo-lobefinned-fish-stub" title="Special:EditPage/Template:Paleo-lobefinned-fish-stub"><abbr title="Edit this template">e</abbr></a></li></ul></div></div>    </div><noscript><img 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