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class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Bryozoa"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.4</span> <span>Phylum Bryozoa</span> </div> </a> <ul id="toc-Phylum_Bryozoa-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Chaetognatha" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Chaetognatha"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.5</span> <span>Phylum Chaetognatha</span> </div> </a> <ul id="toc-Phylum_Chaetognatha-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Chordata" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Chordata"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.6</span> <span>Phylum Chordata</span> </div> </a> <ul id="toc-Phylum_Chordata-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Cycliophora" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Cycliophora"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.7</span> <span>Phylum Cycliophora</span> </div> </a> <ul id="toc-Phylum_Cycliophora-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Dicyemida" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Dicyemida"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.8</span> <span>Phylum Dicyemida</span> </div> </a> <ul id="toc-Phylum_Dicyemida-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Echinodermata" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Echinodermata"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.9</span> <span>Phylum Echinodermata</span> </div> </a> <ul id="toc-Phylum_Echinodermata-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Entoprocta" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Entoprocta"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.10</span> <span>Phylum Entoprocta</span> </div> </a> <ul id="toc-Phylum_Entoprocta-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Gastrotricha" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Gastrotricha"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.11</span> <span>Phylum Gastrotricha</span> </div> </a> <ul id="toc-Phylum_Gastrotricha-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Gnathostomulida" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Gnathostomulida"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.12</span> <span>Phylum Gnathostomulida</span> </div> </a> <ul id="toc-Phylum_Gnathostomulida-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Hemichordata" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Hemichordata"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.13</span> <span>Phylum Hemichordata</span> </div> </a> <ul id="toc-Phylum_Hemichordata-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Kinorhyncha" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Kinorhyncha"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.14</span> <span>Phylum Kinorhyncha</span> </div> </a> <ul id="toc-Phylum_Kinorhyncha-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Loricifera" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Loricifera"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.15</span> <span>Phylum Loricifera</span> </div> </a> <ul id="toc-Phylum_Loricifera-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Micrognathozoa" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Micrognathozoa"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.16</span> <span>Phylum Micrognathozoa</span> </div> </a> <ul id="toc-Phylum_Micrognathozoa-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Mollusca" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Mollusca"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.17</span> <span>Phylum Mollusca</span> </div> </a> <ul id="toc-Phylum_Mollusca-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Nematoda" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Nematoda"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.18</span> <span>Phylum Nematoda</span> </div> </a> <ul id="toc-Phylum_Nematoda-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Nematomorpha" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Nematomorpha"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.19</span> <span>Phylum Nematomorpha</span> </div> </a> <ul id="toc-Phylum_Nematomorpha-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Nemertea" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Nemertea"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.20</span> <span>Phylum Nemertea</span> </div> </a> <ul id="toc-Phylum_Nemertea-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Onychophora" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Onychophora"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.21</span> <span>Phylum Onychophora</span> </div> </a> <ul id="toc-Phylum_Onychophora-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Orthonectida" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Orthonectida"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.22</span> <span>Phylum Orthonectida</span> </div> </a> <ul id="toc-Phylum_Orthonectida-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Phoronida" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Phoronida"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.23</span> <span>Phylum Phoronida</span> </div> </a> <ul id="toc-Phylum_Phoronida-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Platyhelminthes" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Platyhelminthes"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.24</span> <span>Phylum Platyhelminthes</span> </div> </a> <ul id="toc-Phylum_Platyhelminthes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Priapulida" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Priapulida"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.25</span> <span>Phylum Priapulida</span> </div> </a> <ul id="toc-Phylum_Priapulida-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Rotifera" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Rotifera"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.26</span> <span>Phylum Rotifera</span> </div> </a> <ul id="toc-Phylum_Rotifera-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Tardigrada" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylum_Tardigrada"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.27</span> <span>Phylum Tardigrada</span> </div> </a> <ul id="toc-Phylum_Tardigrada-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylum_Xenacoelomorpha" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" 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</div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">List of bilaterian orders</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. 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srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3b/AnimalsRelativeNumbers.png/375px-AnimalsRelativeNumbers.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3b/AnimalsRelativeNumbers.png/500px-AnimalsRelativeNumbers.png 2x" data-file-width="1031" data-file-height="750" /></a><figcaption>The relative number of species contributed to the total by each phylum of animals. Arthropoda is the phylum with the most individual organisms.</figcaption></figure> <p><b>Bilateria</b> is an extremely diverse group of animals containing a vast majority of its species, largely due to the enormous amount of <a href="/wiki/Arthropods" class="mw-redirect" title="Arthropods">arthropods</a>. This article is a list of orders contained within <a href="/wiki/Bilateria" title="Bilateria">Bilateria</a> separated by phylum. Groups that are not contained within an order are listed separately. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="List">List</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=1" title="Edit section: List"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Phylum_Annelida">Phylum <a href="/wiki/Annelida" class="mw-redirect" title="Annelida">Annelida</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=2" title="Edit section: Phylum Annelida"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Sv%C3%B8mmende_blodigle.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a2/Sv%C3%B8mmende_blodigle.JPG/250px-Sv%C3%B8mmende_blodigle.JPG" decoding="async" width="250" height="228" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a2/Sv%C3%B8mmende_blodigle.JPG/375px-Sv%C3%B8mmende_blodigle.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a2/Sv%C3%B8mmende_blodigle.JPG/500px-Sv%C3%B8mmende_blodigle.JPG 2x" data-file-width="847" data-file-height="773" /></a><figcaption><i><a href="/wiki/Hirudo_medicinalis" title="Hirudo medicinalis">Hirudo medicinalis</a></i>. Order <a href="/wiki/Arhynchobdellida" title="Arhynchobdellida">Arhynchobdellida</a></figcaption></figure> <p>Annelid taxonomy is currently under constant revisions due to the discovery that the class <a href="/wiki/Polychaeta" class="mw-redirect" title="Polychaeta">Polychaeta</a> is paraphyletic. As such, a comprehensive list of orders is likely to change depending on what is accepted as valid. </p> <ul><li><b><a href="/wiki/Amphinomida" title="Amphinomida">Amphinomida</a></b></li></ul> <p>Class <a href="/wiki/Sipuncula" title="Sipuncula">Sipuncula</a> </p> <ul><li><b><a href="/wiki/Aspidosiphonidae" title="Aspidosiphonidae">Aspidosiphonida</a></b></li> <li><b><a href="/wiki/Golfingiida" title="Golfingiida">Golfingiida</a></b></li> <li><b><a href="/wiki/Phascolosomatidae" title="Phascolosomatidae">Phascolosomatida</a></b></li></ul> <p>Clade <a href="/wiki/Pleistoannelida" title="Pleistoannelida">Pleistoannelida</a> </p> <ul><li>Clade <a href="/wiki/Errantia" title="Errantia">Errantia</a> <ul><li><b><a href="/wiki/Eunicida" title="Eunicida">Eunicida</a></b></li> <li><b><a href="/wiki/Phyllodocida" title="Phyllodocida">Phyllodocida</a></b></li> <li><b><a href="/wiki/Protodrilida" title="Protodrilida">Protodrilida</a></b></li></ul></li> <li><b><a href="/wiki/Myzostomida" title="Myzostomida">Myzostomida</a></b></li> <li>Clade <a href="/wiki/Sedentaria" title="Sedentaria">Sedentaria</a> <ul><li><b><a href="/wiki/Capitellida" title="Capitellida">Capitellida</a></b><sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>a<span class="cite-bracket">]</span></a></sup> <ul><li>Family <a href="/wiki/Capitellidae" title="Capitellidae">Capitellidae</a></li> <li>Subclass <a href="/wiki/Echiura" title="Echiura">Echiura</a> <ul><li><b><a href="/wiki/Bonelliida" title="Bonelliida">Bonelliida</a></b></li> <li><b><a href="/wiki/Echiurida" title="Echiurida">Echiurida</a></b></li></ul></li></ul></li> <li><b><a href="/wiki/Opheliida" title="Opheliida">Opheliida</a></b></li> <li><b><a href="/wiki/Orbiniida" title="Orbiniida">Orbiniida</a></b></li> <li><b><a href="/wiki/Sabellida" title="Sabellida">Sabellida</a></b></li> <li><b><a href="/wiki/Spionida" title="Spionida">Spionida</a></b></li> <li><b><a href="/wiki/Terebellida" title="Terebellida">Terebellida</a></b></li> <li>Class <a href="/wiki/Clitellata" title="Clitellata">Clitellata</a> <ul><li><b><a href="/wiki/Branchiobdellida" title="Branchiobdellida">Branchiobdellida</a></b></li> <li><b><a href="/wiki/Haplotaxida" title="Haplotaxida">Haplotaxida</a></b></li> <li><b><a href="/wiki/Lumbriculida" class="mw-redirect" title="Lumbriculida">Lumbriculida</a></b></li> <li><b><a href="/wiki/Moniligastrida" class="mw-redirect" title="Moniligastrida">Moniligastrida</a></b></li> <li>Subclass <a href="/wiki/Hirudinea" class="mw-redirect" title="Hirudinea">Hirudinea</a> <ul><li><b><a href="/wiki/Rhynchobdellida" title="Rhynchobdellida">Rhynchobdellida</a></b></li> <li><b><a href="/wiki/Arhynchobdellida" title="Arhynchobdellida">Arhynchobdellida</a></b></li></ul></li></ul></li></ul></li></ul> <p>Unplaced groups </p> <ul><li>Genus <i>Apistobranchus</i></li> <li>Suborder Chaetopteriformia</li> <li>Suborder Cirratuliformia</li> <li>Genus <i>Lobatocerebrum</i></li> <li>Clade <a href="/wiki/Maldanomorpha" title="Maldanomorpha">Maldanomorpha</a></li> <li>Clade Paleoannelida</li> <li>Family <a href="/wiki/Polygordiidae" title="Polygordiidae">Polygordiidae</a></li> <li>Family <a href="/wiki/Siboglinidae" title="Siboglinidae">Siboglinidae</a><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>b<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading3"><h3 id="Phylum_Arthropoda">Phylum <a href="/wiki/Arthropoda" class="mw-redirect" title="Arthropoda">Arthropoda</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=3" title="Edit section: Phylum Arthropoda"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Housefly_on_a_leaf_crop.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Housefly_on_a_leaf_crop.jpg/250px-Housefly_on_a_leaf_crop.jpg" decoding="async" width="250" height="167" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Housefly_on_a_leaf_crop.jpg/375px-Housefly_on_a_leaf_crop.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Housefly_on_a_leaf_crop.jpg/500px-Housefly_on_a_leaf_crop.jpg 2x" data-file-width="1346" data-file-height="898" /></a><figcaption>The <a href="/wiki/House_fly" class="mw-redirect" title="House fly">house fly</a>. Order <a href="/wiki/Diptera" class="mw-redirect" title="Diptera">Diptera</a></figcaption></figure> <p>See <a href="/wiki/List_of_arthropod_orders" title="List of arthropod orders">List of arthropod orders</a> </p> <div class="mw-heading mw-heading3"><h3 id="Phylum_Brachiopoda">Phylum <a href="/wiki/Brachiopoda" class="mw-redirect" title="Brachiopoda">Brachiopoda</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=4" title="Edit section: Phylum Brachiopoda"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Terebratalia_transversa_141510036.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Terebratalia_transversa_141510036.jpg/250px-Terebratalia_transversa_141510036.jpg" decoding="async" width="250" height="167" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Terebratalia_transversa_141510036.jpg/375px-Terebratalia_transversa_141510036.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Terebratalia_transversa_141510036.jpg/500px-Terebratalia_transversa_141510036.jpg 2x" data-file-width="2048" data-file-height="1365" /></a><figcaption><i><a href="/wiki/Terebratalia_transversa" title="Terebratalia transversa">Terebratalia transversa</a></i>. Order <a href="/wiki/Terebratulida" title="Terebratulida">Terebratulida</a></figcaption></figure> <p>Class <a href="/wiki/Craniata_(brachiopod)" title="Craniata (brachiopod)">Craniata</a> </p> <ul><li><b><a href="/wiki/Craniidae" title="Craniidae">Craniida</a></b></li> <li><b><a href="/wiki/Craniopsida" class="mw-redirect" title="Craniopsida">Craniopsida</a></b> †</li> <li><b><a href="/wiki/Trimerellida" title="Trimerellida">Trimerellida</a></b> †</li></ul> <p>Subphylum <a href="/wiki/Linguliformea" title="Linguliformea">Linguliformea</a> </p> <ul><li>Class <a href="/wiki/Lingulata" title="Lingulata">Lingulata</a> <ul><li><b><a href="/wiki/Acrotretida" title="Acrotretida">Acrotretida</a></b> †</li> <li><b><a href="/wiki/Lingulida" title="Lingulida">Lingulida</a></b></li> <li><b><a href="/wiki/Siphonotretida" title="Siphonotretida">Siphonotretida</a></b> †</li></ul></li> <li>Class <a href="/wiki/Paterinata" title="Paterinata">Paterinata</a> <ul><li><b><a href="/wiki/Paterinida" class="mw-redirect" title="Paterinida">Paterinida</a></b> †</li></ul></li></ul> <p>Subphylum <a href="/wiki/Rhynchonelliformea" title="Rhynchonelliformea">Rhynchonelliformea</a> </p> <ul><li>Class <a href="/wiki/Chileata" title="Chileata">Chileata</a> <ul><li><b><a href="/wiki/Chileida" class="mw-redirect" title="Chileida">Chileida</a></b> †</li> <li><b><a href="/wiki/Dictyonellida" title="Dictyonellida">Dictyonellida</a></b> †</li></ul></li> <li>Class <a href="/wiki/Kutorginata" title="Kutorginata">Kutorginata</a> <ul><li><b><a href="/wiki/Kutorginida" class="mw-redirect" title="Kutorginida">Kutorginida</a></b> †</li></ul></li> <li>Class <a href="/wiki/Obolellata" title="Obolellata">Obolellata</a> <ul><li><b><a href="/wiki/Naukatida" class="mw-redirect" title="Naukatida">Naukatida</a></b> †</li> <li><b><a href="/wiki/Obolellida" class="mw-redirect" title="Obolellida">Obolellida</a></b> †</li></ul></li> <li>Class <a href="/wiki/Rhynchonellata" title="Rhynchonellata">Rhynchonellata</a> <ul><li><b><a href="/wiki/Athyridida" title="Athyridida">Athyridida</a></b> †</li> <li><b><a href="/wiki/Atrypida" title="Atrypida">Atrypida</a></b> †</li> <li><b><a href="/wiki/Orthida" title="Orthida">Orthida</a></b> †</li> <li><b><a href="/wiki/Protorthida" title="Protorthida">Protorthida</a></b> †</li> <li><b><a href="/wiki/Pentamerida" title="Pentamerida">Pentamerida</a></b> †</li> <li><b><a href="/wiki/Rhynchonellida" title="Rhynchonellida">Rhynchonellida</a></b></li> <li><b><a href="/wiki/Spiriferida" title="Spiriferida">Spiriferida</a></b> †</li> <li><b><a href="/wiki/Terebratulida" title="Terebratulida">Terebratulida</a></b></li> <li><b><a href="/wiki/Thecideida" title="Thecideida">Thecideida</a></b></li></ul></li> <li>Class <a href="/wiki/Strophomenata" title="Strophomenata">Strophomenata</a> <ul><li><b><a href="/wiki/Billingsellida" title="Billingsellida">Billingsellida</a></b> †</li> <li><b><a href="/wiki/Orthotetida" title="Orthotetida">Orthotetida</a></b> †</li> <li><b><a href="/wiki/Productida" title="Productida">Productida</a></b> †</li> <li><b><a href="/wiki/Strophomenida" title="Strophomenida">Strophomenida</a></b> †</li></ul></li></ul> <div class="mw-heading mw-heading3"><h3 id="Phylum_Bryozoa">Phylum <a href="/wiki/Bryozoa" title="Bryozoa">Bryozoa</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=5" title="Edit section: Phylum Bryozoa"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Membranipora_membranacea.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Membranipora_membranacea.jpg/250px-Membranipora_membranacea.jpg" decoding="async" width="250" height="168" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Membranipora_membranacea.jpg/375px-Membranipora_membranacea.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/8/8e/Membranipora_membranacea.jpg 2x" data-file-width="467" data-file-height="314" /></a><figcaption>A colony of <i>Membranipora membranacea</i>. Order <a href="/wiki/Cheilostomatida" title="Cheilostomatida">Cheilostomatida</a></figcaption></figure> <p>Class <a href="/wiki/Gymnolaemata" title="Gymnolaemata">Gymnolaemata</a> </p> <ul><li><b><a href="/wiki/Cheilostomata" class="mw-redirect" title="Cheilostomata">Cheilostomata</a></b></li> <li><b><a href="/wiki/Ctenostomatida" title="Ctenostomatida">Ctenostomatida</a></b></li></ul> <p>Class <a href="/wiki/Phylactolaemata" title="Phylactolaemata">Phylactolaemata</a> </p> <ul><li><b><a href="/wiki/Plumatellida" class="mw-redirect" title="Plumatellida">Plumatellida</a></b></li></ul> <p>Class <a href="/wiki/Stenolaemata" title="Stenolaemata">Stenolaemata</a> </p> <ul><li><b><a href="/wiki/Cyclostomatida" title="Cyclostomatida">Cyclostomatida</a></b></li> <li><b><a href="/wiki/Cryptostomata" title="Cryptostomata">Cryptostomata</a></b> †</li> <li><b><a href="/wiki/Cystoporida" title="Cystoporida">Cystoporida</a></b> †</li> <li><b>Esthonioporata</b> †</li> <li><b><a href="/wiki/Fenestrata" title="Fenestrata">Fenestrata</a></b> †</li> <li><b>Timanodictyina</b><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>c<span class="cite-bracket">]</span></a></sup> †</li> <li><b><a href="/wiki/Trepostomatida" title="Trepostomatida">Trepostomatida</a></b> †</li></ul> <div class="mw-heading mw-heading3"><h3 id="Phylum_Chaetognatha">Phylum <a href="/wiki/Chaetognatha" title="Chaetognatha">Chaetognatha</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=6" title="Edit section: Phylum Chaetognatha"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Chaetoblack.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Chaetoblack.png/250px-Chaetoblack.png" decoding="async" width="250" height="92" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Chaetoblack.png/375px-Chaetoblack.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Chaetoblack.png/500px-Chaetoblack.png 2x" data-file-width="985" data-file-height="364" /></a><figcaption><i>Spadella cephaloptera</i>. Order <a href="/wiki/Phragmophora" title="Phragmophora">Phragmophora</a></figcaption></figure> <ul><li><b><a href="/wiki/Aphragmophora" title="Aphragmophora">Aphragmophora</a></b></li> <li><b><a href="/wiki/Phragmophora" title="Phragmophora">Phragmophora</a></b></li> <li><b><a href="/wiki/Protoconodonta" class="mw-redirect" title="Protoconodonta">Protoconodonta</a></b> †</li></ul> <p>Unplaced groups </p> <ul><li>Genus <i><a href="/wiki/Capinatator" title="Capinatator">Capinatator</a></i></li> <li>Genus <i>Eognathacantha</i></li> <li>Genus <i>Protodagitta</i></li> <li>Genus <i><a href="/wiki/Timorebestia" title="Timorebestia">Timorebestia</a></i></li></ul> <div class="mw-heading mw-heading3"><h3 id="Phylum_Chordata">Phylum <a href="/wiki/Chordata" class="mw-redirect" title="Chordata">Chordata</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=7" title="Edit section: Phylum Chordata"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Great_White_Shark_(Carcharodon_carcharias)_(32911393995).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/cc/Great_White_Shark_%28Carcharodon_carcharias%29_%2832911393995%29.jpg/250px-Great_White_Shark_%28Carcharodon_carcharias%29_%2832911393995%29.jpg" decoding="async" width="250" height="155" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/cc/Great_White_Shark_%28Carcharodon_carcharias%29_%2832911393995%29.jpg/375px-Great_White_Shark_%28Carcharodon_carcharias%29_%2832911393995%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/cc/Great_White_Shark_%28Carcharodon_carcharias%29_%2832911393995%29.jpg/500px-Great_White_Shark_%28Carcharodon_carcharias%29_%2832911393995%29.jpg 2x" data-file-width="4701" data-file-height="2908" /></a><figcaption>The <a href="/wiki/Great_white_shark" title="Great white shark">great white shark</a>. Order <a href="/wiki/Lamniformes" title="Lamniformes">Lamniformes</a></figcaption></figure> <p>See <a href="/wiki/List_of_chordate_orders" title="List of chordate orders">List of chordate orders</a> </p> <div class="mw-heading mw-heading3"><h3 id="Phylum_Cycliophora">Phylum <a href="/wiki/Cycliophora" class="mw-redirect" title="Cycliophora">Cycliophora</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=8" title="Edit section: Phylum Cycliophora"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:CYC-000249_hab_Symbion_americanus_Paratype.tif" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/18/CYC-000249_hab_Symbion_americanus_Paratype.tif/lossy-page1-250px-CYC-000249_hab_Symbion_americanus_Paratype.tif.jpg" decoding="async" width="250" height="188" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/18/CYC-000249_hab_Symbion_americanus_Paratype.tif/lossy-page1-375px-CYC-000249_hab_Symbion_americanus_Paratype.tif.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/18/CYC-000249_hab_Symbion_americanus_Paratype.tif/lossy-page1-500px-CYC-000249_hab_Symbion_americanus_Paratype.tif.jpg 2x" data-file-width="1600" data-file-height="1200" /></a><figcaption><i><a href="/wiki/Symbion_americanus" title="Symbion americanus">Symbion americanus</a></i>. Order <a href="/wiki/Symbiida" class="mw-redirect" title="Symbiida">Symbiida</a></figcaption></figure> <p>Class <a href="/wiki/Eucycliophora" class="mw-redirect" title="Eucycliophora">Eucycliophora</a> </p> <ul><li><b><a href="/wiki/Symbiida" class="mw-redirect" title="Symbiida">Symbiida</a></b></li></ul> <div class="mw-heading mw-heading3"><h3 id="Phylum_Dicyemida">Phylum <a href="/wiki/Dicyemida" title="Dicyemida">Dicyemida</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=9" title="Edit section: Phylum Dicyemida"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Dicyema_japonicum.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0a/Dicyema_japonicum.png/250px-Dicyema_japonicum.png" decoding="async" width="250" height="185" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0a/Dicyema_japonicum.png/375px-Dicyema_japonicum.png 1.5x, //upload.wikimedia.org/wikipedia/commons/0/0a/Dicyema_japonicum.png 2x" data-file-width="447" data-file-height="331" /></a><figcaption><i><a href="/wiki/Dicyema" title="Dicyema">Dicyema</a> japonicum</i></figcaption></figure> <p>Dicyemida does not contain any established orders but does contain three families: <a href="/wiki/Conocyemidae" title="Conocyemidae">Conocyemidae</a>, <a href="/wiki/Dicyemidae" title="Dicyemidae">Dicyemidae</a> and <a href="/wiki/Kantharellidae" class="mw-redirect" title="Kantharellidae">Kantharellidae</a> </p> <div class="mw-heading mw-heading3"><h3 id="Phylum_Echinodermata">Phylum <a href="/wiki/Echinodermata" class="mw-redirect" title="Echinodermata">Echinodermata</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=10" title="Edit section: Phylum Echinodermata"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Common_Sea_Star_(Asterias_rubens)_-_Oslo,_Norway_2021-03-25_(03).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b7/Common_Sea_Star_%28Asterias_rubens%29_-_Oslo%2C_Norway_2021-03-25_%2803%29.jpg/250px-Common_Sea_Star_%28Asterias_rubens%29_-_Oslo%2C_Norway_2021-03-25_%2803%29.jpg" decoding="async" width="250" height="167" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b7/Common_Sea_Star_%28Asterias_rubens%29_-_Oslo%2C_Norway_2021-03-25_%2803%29.jpg/375px-Common_Sea_Star_%28Asterias_rubens%29_-_Oslo%2C_Norway_2021-03-25_%2803%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b7/Common_Sea_Star_%28Asterias_rubens%29_-_Oslo%2C_Norway_2021-03-25_%2803%29.jpg/500px-Common_Sea_Star_%28Asterias_rubens%29_-_Oslo%2C_Norway_2021-03-25_%2803%29.jpg 2x" data-file-width="3021" data-file-height="2014" /></a><figcaption><i><a href="/wiki/Asterias_rubens" class="mw-redirect" title="Asterias rubens">Asterias rubens</a></i>. Order <a href="/wiki/Forcipulatida" title="Forcipulatida">Forcipulatida</a></figcaption></figure> <p>See <a href="/wiki/List_of_echinoderm_orders" title="List of echinoderm orders">List of echinoderm orders</a> </p> <div class="mw-heading mw-heading3"><h3 id="Phylum_Entoprocta">Phylum <a href="/wiki/Entoprocta" title="Entoprocta">Entoprocta</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=11" title="Edit section: Phylum Entoprocta"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Barentsia_ramosa_171739034.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f4/Barentsia_ramosa_171739034.jpg/250px-Barentsia_ramosa_171739034.jpg" decoding="async" width="250" height="188" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f4/Barentsia_ramosa_171739034.jpg/375px-Barentsia_ramosa_171739034.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f4/Barentsia_ramosa_171739034.jpg/500px-Barentsia_ramosa_171739034.jpg 2x" data-file-width="2048" data-file-height="1536" /></a><figcaption>A colony of <i><a href="/wiki/Barentsia" title="Barentsia">Barentsia</a> ramosa</i></figcaption></figure> <p>Entoprocta has no orders but is split into four families; <a href="/wiki/Barentsiidae" title="Barentsiidae">Barentsiidae</a>, <a href="/wiki/Pedicellinidae" title="Pedicellinidae">Pedicellinidae</a>, <a href="/wiki/Loxokalypodidae" title="Loxokalypodidae">Loxokalypodidae</a>, and <a href="/wiki/Loxosomatidae" title="Loxosomatidae">Loxosomatidae</a> </p> <div class="mw-heading mw-heading3"><h3 id="Phylum_Gastrotricha">Phylum <a href="/wiki/Gastrotricha" class="mw-redirect" title="Gastrotricha">Gastrotricha</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=12" title="Edit section: Phylum Gastrotricha"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Paradasys_subterraneus.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Paradasys_subterraneus.jpg/250px-Paradasys_subterraneus.jpg" decoding="async" width="250" height="188" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Paradasys_subterraneus.jpg/375px-Paradasys_subterraneus.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/83/Paradasys_subterraneus.jpg/500px-Paradasys_subterraneus.jpg 2x" data-file-width="1360" data-file-height="1024" /></a><figcaption><i><a href="/wiki/Paradasys" title="Paradasys">Paradasys</a> subterraneus</i>. Order <a href="/wiki/Macrodasyida" title="Macrodasyida">Macrodasyida</a></figcaption></figure> <ul><li><b><a href="/wiki/Chaetonotida" title="Chaetonotida">Chaetonotida</a></b></li> <li><b><a href="/wiki/Macrodasyida" title="Macrodasyida">Macrodasyida</a></b></li></ul> <div class="mw-heading mw-heading3"><h3 id="Phylum_Gnathostomulida">Phylum <a href="/wiki/Gnathostomulida" class="mw-redirect" title="Gnathostomulida">Gnathostomulida</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=13" title="Edit section: Phylum Gnathostomulida"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Gnathostomula_paradoxa_Sylt.tif" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Gnathostomula_paradoxa_Sylt.tif/lossy-page1-250px-Gnathostomula_paradoxa_Sylt.tif.jpg" decoding="async" width="250" height="56" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Gnathostomula_paradoxa_Sylt.tif/lossy-page1-375px-Gnathostomula_paradoxa_Sylt.tif.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Gnathostomula_paradoxa_Sylt.tif/lossy-page1-500px-Gnathostomula_paradoxa_Sylt.tif.jpg 2x" data-file-width="1566" data-file-height="353" /></a><figcaption><i>Gnathostomula paradoxa</i>. Order <a href="/wiki/Bursovaginoidea" title="Bursovaginoidea">Bursovaginoidea</a></figcaption></figure> <ul><li><b><a href="/wiki/Bursovaginoidea" title="Bursovaginoidea">Bursovaginoidea</a></b></li> <li><b><a href="/wiki/Filospermoidea" title="Filospermoidea">Filospermoidea</a></b></li></ul> <div class="mw-heading mw-heading3"><h3 id="Phylum_Hemichordata">Phylum <a href="/wiki/Hemichordata" class="mw-redirect" title="Hemichordata">Hemichordata</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=14" title="Edit section: Phylum Hemichordata"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Expn7509_(38827990365).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/71/Expn7509_%2838827990365%29.jpg/250px-Expn7509_%2838827990365%29.jpg" decoding="async" width="250" height="141" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/71/Expn7509_%2838827990365%29.jpg/375px-Expn7509_%2838827990365%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/71/Expn7509_%2838827990365%29.jpg/500px-Expn7509_%2838827990365%29.jpg 2x" data-file-width="1920" data-file-height="1080" /></a><figcaption>Unknown species of <a href="/wiki/Acorn_worm" title="Acorn worm">acorn worm</a> (class Enteropneusta).</figcaption></figure> <p>The classes <a href="/wiki/Planctosphaeroidea" class="mw-redirect" title="Planctosphaeroidea">Planctosphaeroidea</a> and <a href="/wiki/Enteropneusta" class="mw-redirect" title="Enteropneusta">Enteropneusta</a> do not contain any orders </p><p>Class <a href="/wiki/Pterobranchia" title="Pterobranchia">Pterobranchia</a> </p> <ul><li><b><a href="/wiki/Cephalodiscida" title="Cephalodiscida">Cephalodiscida</a></b></li> <li>Subclass <a href="/wiki/Graptolithina" class="mw-redirect" title="Graptolithina">Graptolithina</a> <ul><li><b><a href="/wiki/Rhabdopleurida" title="Rhabdopleurida">Rhabdopleurida</a></b></li> <li><b>Dendroidea</b> †</li> <li><b>Graptoloidea</b> †</li></ul></li></ul> <p>Unplaced groups </p> <ul><li>Family <a href="/wiki/Cysticamaridae" title="Cysticamaridae">Cysticamaridae</a></li> <li>Family <a href="/wiki/Wimanicrustidae" title="Wimanicrustidae">Wimanicrustidae</a></li> <li>Family <a href="/wiki/Dithecodendridae" title="Dithecodendridae">Dithecodendridae</a></li> <li>Family <a href="/wiki/Cyclograptidae" title="Cyclograptidae">Cyclograptidae</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Phylum_Kinorhyncha">Phylum <a href="/wiki/Kinorhyncha" title="Kinorhyncha">Kinorhyncha</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=15" title="Edit section: Phylum Kinorhyncha"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Echinoderes_marthae_SEM.tif" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7d/Echinoderes_marthae_SEM.tif/lossy-page1-250px-Echinoderes_marthae_SEM.tif.jpg" decoding="async" width="250" height="177" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7d/Echinoderes_marthae_SEM.tif/lossy-page1-375px-Echinoderes_marthae_SEM.tif.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7d/Echinoderes_marthae_SEM.tif/lossy-page1-500px-Echinoderes_marthae_SEM.tif.jpg 2x" data-file-width="1161" data-file-height="822" /></a><figcaption><i><a href="/wiki/Echinoderes" title="Echinoderes">Echinoderes</a> marthae</i>. Order <a href="/wiki/Echinorhagata" class="mw-redirect" title="Echinorhagata">Echinorhagata</a></figcaption></figure> <p>Class <a href="/wiki/Cyclorhagida" title="Cyclorhagida">Cyclorhagida</a> </p> <ul><li><b><a href="/wiki/Echinorhagata" class="mw-redirect" title="Echinorhagata">Echinorhagata</a></b></li> <li><b>Kentrorhagata</b></li> <li><b>Xenosomata</b></li></ul> <p>Class <a href="/wiki/Allomalorhagida" title="Allomalorhagida">Allomalorhagida</a> </p> <ul><li><b>Anomoirhaga</b></li></ul> <p>Unplaced groups </p> <ul><li>Genus <i><a href="/wiki/Eokinorhynchus" title="Eokinorhynchus">Eokinorhynchus</a></i></li> <li>Family <a href="/wiki/Pycnophyidae" title="Pycnophyidae">Pycnophyidae</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Phylum_Loricifera">Phylum <a href="/wiki/Loricifera" title="Loricifera">Loricifera</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=16" title="Edit section: Phylum Loricifera"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Spinoloricus.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b4/Spinoloricus.png/250px-Spinoloricus.png" decoding="async" width="250" height="330" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b4/Spinoloricus.png/375px-Spinoloricus.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b4/Spinoloricus.png/500px-Spinoloricus.png 2x" data-file-width="1040" data-file-height="1374" /></a><figcaption><i><a href="/wiki/Spinoloricus_cinziae" title="Spinoloricus cinziae">Spinoloricus cinziae</a></i>. Order <a href="/wiki/Nanaloricida" class="mw-redirect" title="Nanaloricida">Nanaloricida</a></figcaption></figure> <p>Loricifera has no classes and all species are contained within one order </p> <ul><li><b><a href="/wiki/Nanaloricida" class="mw-redirect" title="Nanaloricida">Nanaloricida</a></b></li></ul> <div class="mw-heading mw-heading3"><h3 id="Phylum_Micrognathozoa">Phylum <a href="/wiki/Micrognathozoa" class="mw-redirect" title="Micrognathozoa">Micrognathozoa</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=17" title="Edit section: Phylum Micrognathozoa"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Limnognathia_maerski_youtube.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Limnognathia_maerski_youtube.png/250px-Limnognathia_maerski_youtube.png" decoding="async" width="250" height="110" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Limnognathia_maerski_youtube.png/375px-Limnognathia_maerski_youtube.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Limnognathia_maerski_youtube.png/500px-Limnognathia_maerski_youtube.png 2x" data-file-width="1425" data-file-height="625" /></a><figcaption><i><a href="/wiki/Limnognathia_maerski" class="mw-redirect" title="Limnognathia maerski">Limnognathia maerski</a></i>. Order <a href="/wiki/Limnognathida" class="mw-redirect" title="Limnognathida">Limnognathida</a></figcaption></figure> <p>Micrognathozoa has no classes and its single species is placed in one order </p> <ul><li><b><a href="/wiki/Limnognathida" class="mw-redirect" title="Limnognathida">Limnognathida</a></b></li></ul> <div class="mw-heading mw-heading3"><h3 id="Phylum_Mollusca">Phylum <a href="/wiki/Mollusca" title="Mollusca">Mollusca</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=18" title="Edit section: Phylum Mollusca"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Squid_colors_2.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8f/Squid_colors_2.jpg/250px-Squid_colors_2.jpg" decoding="async" width="250" height="197" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8f/Squid_colors_2.jpg/375px-Squid_colors_2.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8f/Squid_colors_2.jpg/500px-Squid_colors_2.jpg 2x" data-file-width="3750" data-file-height="2960" /></a><figcaption><i><a href="/wiki/Sepioteuthis_sepioidea" class="mw-redirect" title="Sepioteuthis sepioidea">Sepioteuthis sepioidea</a></i>. Order <a href="/wiki/Myopsida" title="Myopsida">Myopsida</a></figcaption></figure> <p>See <a href="/wiki/List_of_mollusc_orders" title="List of mollusc orders">List of mollusc orders</a> </p> <div class="mw-heading mw-heading3"><h3 id="Phylum_Nematoda">Phylum <a href="/wiki/Nematoda" class="mw-redirect" title="Nematoda">Nematoda</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=19" title="Edit section: Phylum Nematoda"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:CelegansGoldsteinLabUNC.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6a/CelegansGoldsteinLabUNC.jpg/250px-CelegansGoldsteinLabUNC.jpg" decoding="async" width="250" height="212" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/6/6a/CelegansGoldsteinLabUNC.jpg 1.5x" data-file-width="350" data-file-height="297" /></a><figcaption><i><a href="/wiki/Caenorhabditis_elegans" title="Caenorhabditis elegans">Caenorhabditis elegans</a></i>. Order <a href="/wiki/Rhabditida" title="Rhabditida">Rhabditida</a></figcaption></figure> <p>Nematode taxonomy is far from fully resolved, and different schemes might be used. For this list, Mike Hodda's <i>Phylum Nematoda: a classification, catalogue and index of valid genera, with a census of valid species</i> classification is used.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>Class <a href="/wiki/Enoplea" title="Enoplea">Enoplea</a> </p> <ul><li>Subclass <a href="/wiki/Enoplia" title="Enoplia">Enoplia</a> <ul><li>Superorder Enoplica <ul><li><b>Alaimida</b></li> <li><b><a href="/wiki/Enoplida" title="Enoplida">Enoplida</a></b></li> <li><b>Ironida</b></li> <li><b>Trefusiida</b></li> <li><b>Tripyloidida</b></li></ul></li> <li>Superorder Rhaptothyreica <ul><li><b>Rhaptothyreida</b></li></ul></li></ul></li> <li>Subclass Oncholaimia <ul><li><b><a href="/wiki/Oncholaimida" class="mw-redirect" title="Oncholaimida">Oncholaimida</a></b></li></ul></li> <li>Subclass Triplonchia <ul><li><b><a href="/wiki/Triplonchida" title="Triplonchida">Triplonchida</a></b></li> <li><b>Tripylida</b></li></ul></li></ul> <p>Class Dorylaimea </p> <ul><li>Subclass <a href="/wiki/Dorylaimia" title="Dorylaimia">Dorylaimia</a> <ul><li><b><a href="/wiki/Dorylaimida" title="Dorylaimida">Dorylaimida</a></b></li></ul></li> <li>Subclass Bathyodontia <ul><li><b>Bathyodontida</b></li> <li><b><a href="/wiki/Mononchida" title="Mononchida">Mononchida</a></b></li> <li><b><a href="/wiki/Mermithida" title="Mermithida">Mermithida</a></b></li></ul></li> <li>Subclass Trichocephalia <ul><li><b><a href="/wiki/Trichocephalida" title="Trichocephalida">Trichocephalida</a></b></li> <li><b>Marimermithida</b></li> <li><b>Dioctophymatida</b></li> <li><b><a href="/wiki/Muspiceida" title="Muspiceida">Muspiceida</a></b></li></ul></li></ul> <p>Class <a href="/wiki/Chromadorea" title="Chromadorea">Chromadorea</a> </p> <ul><li>Subclass <a href="/wiki/Chromadoria" class="mw-redirect" title="Chromadoria">Chromadoria</a> <ul><li><b><a href="/wiki/Chromadorida" title="Chromadorida">Chromadorida</a></b></li> <li><b>Selachinematida</b></li> <li><b><a href="/wiki/Desmodorida" title="Desmodorida">Desmodorida</a></b></li> <li><b><a href="/wiki/Desmoscolecida" class="mw-redirect" title="Desmoscolecida">Desmoscolecida</a></b></li></ul></li> <li>Subclass Plectia <ul><li>Superorder Monhysterica <ul><li><b><a href="/wiki/Monhysterida" title="Monhysterida">Monhysterida</a></b></li></ul></li> <li>Superorder Plectica <ul><li><b><a href="/wiki/Leptolaimida" title="Leptolaimida">Leptolaimida</a></b></li> <li><b><a href="/wiki/Plectida" title="Plectida">Plectida</a></b></li> <li><b><a href="/wiki/Benthimermithida" title="Benthimermithida">Benthimermithida</a></b></li></ul></li> <li>Superorder Teratocephalica <ul><li><b>Teratocephalida</b></li></ul></li> <li>Superorder Rhabditica <ul><li><b><a href="/wiki/Diplogasterida" title="Diplogasterida">Diplogasterida</a></b></li> <li><b><a href="/wiki/Rhabditida" title="Rhabditida">Rhabditida</a></b></li> <li><b><a href="/wiki/Spirurida" title="Spirurida">Spirurida</a></b></li> <li><b>Rhigonematida</b></li> <li><b>Panagrolaimida</b></li> <li><b>Drilonematida</b></li></ul></li></ul></li></ul> <div class="mw-heading mw-heading3"><h3 id="Phylum_Nematomorpha">Phylum <a href="/wiki/Nematomorpha" title="Nematomorpha">Nematomorpha</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=20" title="Edit section: Phylum Nematomorpha"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Paragordius_tricuspidatus.jpeg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e7/Paragordius_tricuspidatus.jpeg/250px-Paragordius_tricuspidatus.jpeg" decoding="async" width="250" height="171" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e7/Paragordius_tricuspidatus.jpeg/375px-Paragordius_tricuspidatus.jpeg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e7/Paragordius_tricuspidatus.jpeg/500px-Paragordius_tricuspidatus.jpeg 2x" data-file-width="2484" data-file-height="1698" /></a><figcaption><i><a href="/wiki/Paragordius" title="Paragordius">Paragordius</a> tricuspidatus</i>. Order <a href="/wiki/Gordioidea" title="Gordioidea">Gordioidea</a></figcaption></figure> <ul><li><b><a href="/wiki/Gordioidea" title="Gordioidea">Gordioidea</a></b></li> <li><b><a href="/wiki/Nectonematoidea" class="mw-redirect" title="Nectonematoidea">Nectonematoidea</a></b></li></ul> <div class="mw-heading mw-heading3"><h3 id="Phylum_Nemertea">Phylum <a href="/wiki/Nemertea" title="Nemertea">Nemertea</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=21" title="Edit section: Phylum Nemertea"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Five-lined_Ribbon_Worm_(Baseodiscus_quinquelineatus)_(15622965514).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/80/Five-lined_Ribbon_Worm_%28Baseodiscus_quinquelineatus%29_%2815622965514%29.jpg/250px-Five-lined_Ribbon_Worm_%28Baseodiscus_quinquelineatus%29_%2815622965514%29.jpg" decoding="async" width="250" height="188" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/80/Five-lined_Ribbon_Worm_%28Baseodiscus_quinquelineatus%29_%2815622965514%29.jpg/375px-Five-lined_Ribbon_Worm_%28Baseodiscus_quinquelineatus%29_%2815622965514%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/80/Five-lined_Ribbon_Worm_%28Baseodiscus_quinquelineatus%29_%2815622965514%29.jpg/500px-Five-lined_Ribbon_Worm_%28Baseodiscus_quinquelineatus%29_%2815622965514%29.jpg 2x" data-file-width="4608" data-file-height="3456" /></a><figcaption><i><a href="/wiki/Baseodiscus" title="Baseodiscus">Baseodiscus</a> quinquelineatus</i>. Order <a href="/wiki/Heteronemertea" title="Heteronemertea">Heteronemertea</a></figcaption></figure> <p>Class <a href="/wiki/Hoplonemertea" title="Hoplonemertea">Hoplonemertea</a> </p> <ul><li><b><a href="/wiki/Monostilifera" title="Monostilifera">Monostilifera</a></b></li> <li><b><a href="/wiki/Polystilifera" title="Polystilifera">Polystilifera</a></b></li></ul> <p>Class <a href="/wiki/Palaeonemertea" title="Palaeonemertea">Palaeonemertea</a> </p> <ul><li><b>Archinemertea</b></li> <li><b>Carinomiformes</b></li> <li><b><a href="/wiki/Tubulaniformes" title="Tubulaniformes">Tubulaniformes</a></b></li></ul> <p>Class <a href="/wiki/Pilidiophora" class="mw-redirect" title="Pilidiophora">Pilidiophora</a> </p> <ul><li><b><a href="/wiki/Heteronemertea" title="Heteronemertea">Heteronemertea</a></b></li></ul> <div class="mw-heading mw-heading3"><h3 id="Phylum_Onychophora">Phylum <a href="/wiki/Onychophora" title="Onychophora">Onychophora</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=22" title="Edit section: Phylum Onychophora"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Epiperipatus_biolleyi.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Epiperipatus_biolleyi.png/250px-Epiperipatus_biolleyi.png" decoding="async" width="250" height="224" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Epiperipatus_biolleyi.png/375px-Epiperipatus_biolleyi.png 1.5x, //upload.wikimedia.org/wikipedia/commons/d/d6/Epiperipatus_biolleyi.png 2x" data-file-width="434" data-file-height="389" /></a><figcaption><i><a href="/wiki/Epiperipatus" title="Epiperipatus">Epiperipatus</a> biolleyi</i></figcaption></figure> <p>Onychophora contains no classes and no orders, but is split into two living families; <a href="/wiki/Peripatidae" title="Peripatidae">Peripatidae</a> and <a href="/wiki/Peripatopsidae" title="Peripatopsidae">Peripatopsidae</a>, and 5 extinct genera; <i><a href="/wiki/Antennacanthopodia" title="Antennacanthopodia">Antennacanthopodia</a></i>, <i>Antennipatus</i>, <i><a href="/wiki/Helenodora" title="Helenodora">Helenodora</a></i>, <i><a href="/wiki/Succinipatopsis" title="Succinipatopsis">Succinipatopsis</a></i>, and <i><a href="/wiki/Tertiapatus" title="Tertiapatus">Tertiapatus</a></i>. </p> <div class="mw-heading mw-heading3"><h3 id="Phylum_Orthonectida">Phylum <a href="/wiki/Orthonectida" title="Orthonectida">Orthonectida</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=23" title="Edit section: Phylum Orthonectida"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:EB1911_Mesozoa_-_Rhopalura_giardii.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e6/EB1911_Mesozoa_-_Rhopalura_giardii.jpg/250px-EB1911_Mesozoa_-_Rhopalura_giardii.jpg" decoding="async" width="250" height="334" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e6/EB1911_Mesozoa_-_Rhopalura_giardii.jpg/375px-EB1911_Mesozoa_-_Rhopalura_giardii.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e6/EB1911_Mesozoa_-_Rhopalura_giardii.jpg/500px-EB1911_Mesozoa_-_Rhopalura_giardii.jpg 2x" data-file-width="594" data-file-height="794" /></a><figcaption>A drawing of <i>Rhopalura giardii</i></figcaption></figure> <p>Orthonectida contains no classes or orders, but is split into two families; <a href="/wiki/Pelmatosphaeridae" class="mw-redirect" title="Pelmatosphaeridae">Pelmatosphaeridae</a> and <a href="/wiki/Rhopaluridae" title="Rhopaluridae">Rhopaluridae</a> </p> <div class="mw-heading mw-heading3"><h3 id="Phylum_Phoronida">Phylum <a href="/wiki/Phoronida" class="mw-redirect" title="Phoronida">Phoronida</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=24" title="Edit section: Phylum Phoronida"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Phoronopsis_harmeri_611.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/87/Phoronopsis_harmeri_611.jpg/250px-Phoronopsis_harmeri_611.jpg" decoding="async" width="250" height="250" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/87/Phoronopsis_harmeri_611.jpg/375px-Phoronopsis_harmeri_611.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/87/Phoronopsis_harmeri_611.jpg/500px-Phoronopsis_harmeri_611.jpg 2x" data-file-width="1503" data-file-height="1503" /></a><figcaption><i>Phoronopsis harmeri</i></figcaption></figure> <p>Phoronida contains no classes, orders, or families, but is split into two genera; <i><a href="/wiki/Phoronis" title="Phoronis">Phoronis</a></i> and <i><a href="/wiki/Phoronopsis" title="Phoronopsis">Phoronopsis</a></i> </p> <div class="mw-heading mw-heading3"><h3 id="Phylum_Platyhelminthes">Phylum <a href="/wiki/Platyhelminthes" class="mw-redirect" title="Platyhelminthes">Platyhelminthes</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=25" title="Edit section: Phylum Platyhelminthes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Flatworm_Pseudoceros_ferrugineus_-_Bunaken,_Sulawesi,_Indonesia.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/00/Flatworm_Pseudoceros_ferrugineus_-_Bunaken%2C_Sulawesi%2C_Indonesia.jpg/250px-Flatworm_Pseudoceros_ferrugineus_-_Bunaken%2C_Sulawesi%2C_Indonesia.jpg" decoding="async" width="250" height="169" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/00/Flatworm_Pseudoceros_ferrugineus_-_Bunaken%2C_Sulawesi%2C_Indonesia.jpg/375px-Flatworm_Pseudoceros_ferrugineus_-_Bunaken%2C_Sulawesi%2C_Indonesia.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/00/Flatworm_Pseudoceros_ferrugineus_-_Bunaken%2C_Sulawesi%2C_Indonesia.jpg/500px-Flatworm_Pseudoceros_ferrugineus_-_Bunaken%2C_Sulawesi%2C_Indonesia.jpg 2x" data-file-width="2267" data-file-height="1529" /></a><figcaption><i><a href="/wiki/Pseudoceros" title="Pseudoceros">Pseudoceros</a> ferrugineus</i>. Order <a href="/wiki/Polycladida" title="Polycladida">Polycladida</a></figcaption></figure> <p>The class <a href="/wiki/Catenulida" title="Catenulida">Catenulida</a> contains no orders. </p><p>Subphylum <a href="/wiki/Rhabditophora" title="Rhabditophora">Rhabditophora</a> </p> <ul><li>Clade <a href="/wiki/Macrostomorpha" title="Macrostomorpha">Macrostomorpha</a> <ul><li><b><a href="/wiki/Macrostomida" class="mw-redirect" title="Macrostomida">Macrostomida</a></b></li></ul></li> <li>Clade <a href="/wiki/Trepaxonemata" title="Trepaxonemata">Trepaxonemata</a> <ul><li><b>Gnosonesimida</b></li> <li>Clade <a href="/wiki/Amplimatricata" class="mw-redirect" title="Amplimatricata">Amplimatricata</a> <ul><li><b><a href="/wiki/Lecithoepitheliata" title="Lecithoepitheliata">Lecithoepitheliata</a></b></li> <li><b><a href="/wiki/Polycladida" title="Polycladida">Polycladida</a></b></li></ul></li> <li>Clade Euneoophora <ul><li><b><a href="/wiki/Proseriata" title="Proseriata">Proseriata</a></b></li> <li><b><a href="/wiki/Rhabdocoela" title="Rhabdocoela">Rhabdocoela</a></b></li> <li>Clade Acentrosomata <ul><li>Clade Adiaphanida <ul><li><b><a href="/wiki/Prolecithophora" title="Prolecithophora">Prolecithophora</a></b></li> <li><b><a href="/wiki/Fecampiida" title="Fecampiida">Fecampiida</a></b></li> <li><b><a href="/wiki/Tricladida" class="mw-redirect" title="Tricladida">Tricladida</a></b></li></ul></li> <li>Clade <a href="/wiki/Bothrioneodermata" title="Bothrioneodermata">Bothrioneodermata</a> <ul><li><b><a href="/wiki/Bothrioplanida" class="mw-redirect" title="Bothrioplanida">Bothrioplanida</a></b></li> <li>Superclass <a href="/wiki/Neodermata" title="Neodermata">Neodermata</a> <ul><li>Class <a href="/wiki/Cestoda" title="Cestoda">Cestoda</a> <ul><li>Subclass <a href="/wiki/Cestodaria" title="Cestodaria">Cestodaria</a> <ul><li><b><a href="/wiki/Amphilinidea" class="mw-redirect" title="Amphilinidea">Amphilinidea</a></b></li> <li><b><a href="/wiki/Gyrocotylidea" title="Gyrocotylidea">Gyrocotylidea</a></b></li></ul></li> <li>Subclass <a href="/wiki/Eucestoda" title="Eucestoda">Eucestoda</a> <ul><li><b><a href="/wiki/Spathebothriidea" title="Spathebothriidea">Spathebothriidea</a></b></li> <li><b><a href="/wiki/Caryophyllidea" title="Caryophyllidea">Caryophyllidea</a></b></li> <li><b><a href="/wiki/Haplobothriidea" title="Haplobothriidea">Haplobothriidea</a></b></li> <li><b><a href="/wiki/Diphyllobothriidea" title="Diphyllobothriidea">Diphyllobothriidea</a></b></li> <li><b><a href="/wiki/Diphyllidea" title="Diphyllidea">Diphyllidea</a></b></li> <li><b><a href="/wiki/Trypanorhyncha" title="Trypanorhyncha">Trypanorhyncha</a></b></li> <li><b><a href="/wiki/Bothriocephalidea" title="Bothriocephalidea">Bothriocephalidea</a></b></li> <li><b><a href="/wiki/Litobothriidea" title="Litobothriidea">Litobothriidea</a></b></li> <li><b><a href="/wiki/Lecanicephaloidea" title="Lecanicephaloidea">Lecanicephaloidea</a></b></li> <li><b><a href="/wiki/Rhinebothriidea" title="Rhinebothriidea">Rhinebothriidea</a></b></li> <li><b><a href="/wiki/Tetraphyllidea" title="Tetraphyllidea">Tetraphyllidea</a></b></li> <li><b><a href="/wiki/Onchoproteocephalidea" title="Onchoproteocephalidea">Onchoproteocephalidea</a></b></li> <li><b><a href="/wiki/Nippotaeniidea" title="Nippotaeniidea">Nippotaeniidea</a></b></li> <li><b><a href="/wiki/Tetrabothriidea" title="Tetrabothriidea">Tetrabothriidea</a></b></li> <li><b><a href="/wiki/Cyclophyllidea" title="Cyclophyllidea">Cyclophyllidea</a></b></li></ul></li></ul></li> <li>Class <a href="/wiki/Monogenea" title="Monogenea">Monogenea</a> <ul><li>Subclass <a href="/wiki/Monopisthocotylea" title="Monopisthocotylea">Monopisthocotylea</a> <ul><li><b><a href="/wiki/Monocotylidea" class="mw-redirect" title="Monocotylidea">Monocotylidea</a></b></li> <li><b><a href="/wiki/Capsalidea" title="Capsalidea">Capsalidea</a></b></li> <li><b>Lagarocotylidea</b></li> <li><b><a href="/wiki/Montchadskyellidea" class="mw-redirect" title="Montchadskyellidea">Montchadskyellidea</a></b></li> <li><b><a href="/wiki/Gyrodactylidea" title="Gyrodactylidea">Gyrodactylidea</a></b></li> <li><b><a href="/wiki/Dactylogyridea" title="Dactylogyridea">Dactylogyridea</a></b></li></ul></li> <li>Subclass <a href="/wiki/Polyopisthocotylea" title="Polyopisthocotylea">Polyopisthocotylea</a> <ul><li><b><a href="/wiki/Polystomatidea" class="mw-redirect" title="Polystomatidea">Polystomatidea</a></b></li> <li><b><a href="/wiki/Chimaericolidea" class="mw-redirect" title="Chimaericolidea">Chimaericolidea</a></b></li> <li><b><a href="/wiki/Diclybothriidea" title="Diclybothriidea">Diclybothriidea</a></b></li> <li><b><a href="/wiki/Mazocraeidea" title="Mazocraeidea">Mazocraeidea</a></b></li></ul></li></ul></li> <li>Class <a href="/wiki/Trematoda" title="Trematoda">Trematoda</a> <ul><li>Subclass <a href="/wiki/Aspidogastrea" title="Aspidogastrea">Aspidogastrea</a> <ul><li><b><a href="/wiki/Aspidogastrida" title="Aspidogastrida">Aspidogastrida</a></b></li> <li><b><a href="/wiki/Stichocotylida" class="mw-redirect" title="Stichocotylida">Stichocotylida</a></b></li></ul></li> <li>Subclass <a href="/wiki/Digenea" title="Digenea">Digenea</a> <ul><li><b><a href="/wiki/Diplostomida" title="Diplostomida">Diplostomida</a></b></li> <li><b><a href="/wiki/Plagiorchiida" title="Plagiorchiida">Plagiorchiida</a></b></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul> <p>Unplaced groups </p> <ul><li>Genus <i><a href="/wiki/Haplopharynx" title="Haplopharynx">Haplopharynx</a></i></li></ul> <div class="mw-heading mw-heading3"><h3 id="Phylum_Priapulida">Phylum <a href="/wiki/Priapulida" title="Priapulida">Priapulida</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=26" title="Edit section: Phylum Priapulida"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Adult_priapulid.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/01/Adult_priapulid.jpg/250px-Adult_priapulid.jpg" decoding="async" width="250" height="333" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/01/Adult_priapulid.jpg/375px-Adult_priapulid.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/01/Adult_priapulid.jpg/500px-Adult_priapulid.jpg 2x" data-file-width="1944" data-file-height="2592" /></a><figcaption><i><a href="/wiki/Priapulus" title="Priapulus">Priapulus</a> caudatus</i>. Order <a href="/wiki/Priapulimorphida" title="Priapulimorphida">Priapulimorphida</a></figcaption></figure> <p>Several stem group priapulid genera are not classified within any established orders. The orders listed below are solely crown priapulids. </p> <ul><li><b><a href="/wiki/Halicryptomorphida" class="mw-redirect" title="Halicryptomorphida">Halicryptomorphida</a></b></li> <li><b><a href="/wiki/Priapulimorphida" title="Priapulimorphida">Priapulimorphida</a></b></li> <li><b>Meiopriapulomorpha</b></li> <li><b><a href="/wiki/Seticoronaria" class="mw-redirect" title="Seticoronaria">Seticoronaria</a></b><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>d<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading3"><h3 id="Phylum_Rotifera">Phylum <a href="/wiki/Rotifera" class="mw-redirect" title="Rotifera">Rotifera</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=27" title="Edit section: Phylum Rotifera"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Habrotrocha_rosa_1.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/66/Habrotrocha_rosa_1.jpg/250px-Habrotrocha_rosa_1.jpg" decoding="async" width="250" height="253" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/66/Habrotrocha_rosa_1.jpg/375px-Habrotrocha_rosa_1.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/6/66/Habrotrocha_rosa_1.jpg 2x" data-file-width="500" data-file-height="506" /></a><figcaption><i><a href="/wiki/Habrotrocha_rosa" title="Habrotrocha rosa">Habrotrocha rosa</a></i>. Order Philodinida</figcaption></figure> <p>The group <a href="/wiki/Acanthocephala" title="Acanthocephala">Acanthocephala</a> is traditionally treated as a separate phylum from Rotifera. However, it was found that Acanthocephala are <a href="/wiki/Phylogenetics" title="Phylogenetics">phylogenetically</a> contained within the rotifers, and this list reflects these findings. </p> <ul><li><b><a href="/wiki/Seisonida" class="mw-redirect" title="Seisonida">Seisonida</a></b></li></ul> <p>Superclass <a href="/wiki/Eurotatoria" title="Eurotatoria">Eurotatoria</a> </p> <ul><li>Class <a href="/wiki/Bdelloidea" title="Bdelloidea">Bdelloidea</a> <ul><li><b>Adinetida</b></li> <li><b>Philodinavida</b></li> <li><b><a href="/wiki/Philodinida" class="mw-redirect" title="Philodinida">Philodinida</a></b></li></ul></li> <li>Class <a href="/wiki/Monogononta" title="Monogononta">Monogononta</a> <ul><li><b><a href="/wiki/Collothecaceae" title="Collothecaceae">Collothecaceae</a></b></li> <li><b><a href="/wiki/Flosculariaceae" title="Flosculariaceae">Flosculariaceae</a></b></li> <li><b><a href="/wiki/Ploima" title="Ploima">Ploima</a></b></li></ul></li></ul> <p>Clade <a href="/wiki/Acanthocephala" title="Acanthocephala">Acanthocephala</a> </p> <ul><li>Class <a href="/wiki/Archiacanthocephala" title="Archiacanthocephala">Archiacanthocephala</a> <ul><li><b><a href="/wiki/Apororhynchida" class="mw-redirect" title="Apororhynchida">Apororhynchida</a></b></li> <li><b><a href="/wiki/Gigantorhynchida" class="mw-redirect" title="Gigantorhynchida">Gigantorhynchida</a></b></li> <li><b><a href="/wiki/Moniliformida" class="mw-redirect" title="Moniliformida">Moniliformida</a></b></li> <li><b><a href="/wiki/Oligacanthorhynchida" class="mw-redirect" title="Oligacanthorhynchida">Oligacanthorhynchida</a></b></li></ul></li> <li>Class <a href="/wiki/Eoacanthocephala" title="Eoacanthocephala">Eoacanthocephala</a> <ul><li><b><a href="/wiki/Gyracanthocephala" class="mw-redirect" title="Gyracanthocephala">Gyracanthocephala</a></b></li> <li><b><a href="/wiki/Neoechinorhynchida" title="Neoechinorhynchida">Neoechinorhynchida</a></b></li></ul></li> <li>Class <a href="/wiki/Palaeacanthocephala" title="Palaeacanthocephala">Palaeacanthocephala</a> <ul><li><b><a href="/wiki/Echinorhynchida" title="Echinorhynchida">Echinorhynchida</a></b></li> <li><b><a href="/wiki/Heteramorphida" class="mw-redirect" title="Heteramorphida">Heteramorphida</a></b></li> <li><b><a href="/wiki/Polymorphida" title="Polymorphida">Polymorphida</a></b></li></ul></li> <li><b><a href="/wiki/Polyacanthorhynchida" class="mw-redirect" title="Polyacanthorhynchida">Polyacanthorhynchida</a></b></li></ul> <div class="mw-heading mw-heading3"><h3 id="Phylum_Tardigrada">Phylum <a href="/wiki/Tardigrada" class="mw-redirect" title="Tardigrada">Tardigrada</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=28" title="Edit section: Phylum Tardigrada"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Tardigrade_Acutuncus_Antarcticus.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Tardigrade_Acutuncus_Antarcticus.jpg/250px-Tardigrade_Acutuncus_Antarcticus.jpg" decoding="async" width="250" height="179" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Tardigrade_Acutuncus_Antarcticus.jpg/375px-Tardigrade_Acutuncus_Antarcticus.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Tardigrade_Acutuncus_Antarcticus.jpg/500px-Tardigrade_Acutuncus_Antarcticus.jpg 2x" data-file-width="700" data-file-height="501" /></a><figcaption><i><a href="/wiki/Acutuncus_antarcticus" class="mw-redirect" title="Acutuncus antarcticus">Acutuncus antarcticus</a></i>. Order <a href="/wiki/Parachela_(tardigrade)" title="Parachela (tardigrade)">Parachela</a></figcaption></figure> <p>The class <a href="/wiki/Mesotardigrada" title="Mesotardigrada">Mesotardigrada</a> contains one species, <i>Thermozodium esakii</i>, which has not been found since its reported discovery in 1937, and its existence is dubious. It is contained within the order <b>Thermozodia</b>. </p> <ul><li>Class <a href="/wiki/Eutardigrada" class="mw-redirect" title="Eutardigrada">Eutardigrada</a> <ul><li><b><a href="/wiki/Apochela" class="mw-redirect" title="Apochela">Apochela</a></b></li> <li><b><a href="/wiki/Parachela_(tardigrade)" title="Parachela (tardigrade)">Parachela</a></b></li></ul></li> <li>Class <a href="/wiki/Heterotardigrada" title="Heterotardigrada">Heterotardigrada</a> <ul><li><b><a href="/wiki/Arthrotardigrada" title="Arthrotardigrada">Arthrotardigrada</a></b></li> <li><b><a href="/wiki/Echiniscoidea" title="Echiniscoidea">Echiniscoidea</a></b></li></ul></li></ul> <div class="mw-heading mw-heading3"><h3 id="Phylum_Xenacoelomorpha">Phylum <a href="/wiki/Xenacoelomorpha" title="Xenacoelomorpha">Xenacoelomorpha</a></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=29" title="Edit section: Phylum Xenacoelomorpha"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Neochildia_fusca.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/60/Neochildia_fusca.jpg/250px-Neochildia_fusca.jpg" decoding="async" width="250" height="134" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/60/Neochildia_fusca.jpg/375px-Neochildia_fusca.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/60/Neochildia_fusca.jpg/500px-Neochildia_fusca.jpg 2x" data-file-width="929" data-file-height="499" /></a><figcaption><i><a href="/wiki/Neochildia" title="Neochildia">Neochildia</a> fusca</i>. Order <a href="/wiki/Acoela" title="Acoela">Acoela</a></figcaption></figure> <p>The subphylum <a href="/wiki/Xenoturbellida" class="mw-redirect" title="Xenoturbellida">Xenoturbellida</a> does not contain any classes or orders. It's only family is Xenoturbellidae which contains one genus, <i>Xenoturbella</i>. </p> <ul><li>Subphylum <a href="/wiki/Acoelomorpha" title="Acoelomorpha">Acoelomorpha</a> <ul><li><b><a href="/wiki/Acoela" title="Acoela">Acoela</a></b></li></ul></li></ul> <p>The class <a href="/wiki/Nemertodermatida" title="Nemertodermatida">Nemertodermatida</a> does not contain any orders, but does contain two families; <a href="/wiki/Ascopariidae" title="Ascopariidae">Ascopariidae</a> and <a href="/wiki/Nemertodermatidae" title="Nemertodermatidae">Nemertodermatidae</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Notes">Notes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=List_of_bilaterian_orders&action=edit&section=30" title="Edit section: Notes"><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 reflist-lower-alpha"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text">This order traditionally also includes the families Maldanidae and Arenicolidae, but is now believed to only contain Echiura and family Capitellidae. Maldanidae and Arenicolidae have been moved to the clade Maldanomorpha</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">This family is traditionally placed in the order Sabellida, but is now considered to be closest to Cirratuliformia and as such is now unplaced</span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text">May be a suborder of Cryptostomata</span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text">Sometimes treated as a class</span> </li> </ol></div></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=List_of_bilaterian_orders&action=edit&section=31" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239543626"><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></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="CITEREFHodda2022" class="citation journal cs1">Hodda, M. (2022). <a rel="nofollow" class="external text" href="https://doi.org/10.11646%2Fzootaxa.5114.1.1">"Phylum Nematoda: a classification, catalogue and index of valid genera, with a census of valid species"</a>. <i>Zootaxa</i>. <b>5114</b> (1): 1–289. <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/10.11646%2Fzootaxa.5114.1.1">10.11646/zootaxa.5114.1.1</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/35391386">35391386</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Zootaxa&rft.atitle=Phylum+Nematoda%3A+a+classification%2C+catalogue+and+index+of+valid+genera%2C+with+a+census+of+valid+species&rft.volume=5114&rft.issue=1&rft.pages=1-289&rft.date=2022&rft_id=info%3Adoi%2F10.11646%2Fzootaxa.5114.1.1&rft_id=info%3Apmid%2F35391386&rft.aulast=Hodda&rft.aufirst=M.&rft_id=https%3A%2F%2Fdoi.org%2F10.11646%252Fzootaxa.5114.1.1&rfr_id=info%3Asid%2Fen.wikipedia.org%3AList+of+bilaterian+orders" class="Z3988"></span></span> </li> </ol></div></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=List_of_bilaterian_orders&oldid=1256991620">https://en.wikipedia.org/w/index.php?title=List_of_bilaterian_orders&oldid=1256991620</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Bilaterian_orders" title="Category:Bilaterian orders">Bilaterian orders</a></li><li><a href="/wiki/Category:Taxonomic_lists_(orders)" title="Category:Taxonomic lists (orders)">Taxonomic lists (orders)</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_is_different_from_Wikidata" title="Category:Short description is different from Wikidata">Short description is different from Wikidata</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 12 November 2024, at 16:38<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. 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