treatments-xml/data/A2/31/1D/A2311D4D9F3BE30104E6F890FC592848.xml
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<document id="8F71FC11B8B310E5A37E95A83499D941" ID-CLB-Dataset="4900" ID-DOI="10.11646/zootaxa.3859.1.1" ID-GBIF-Dataset="d866af6f-cbcd-47f4-a4f3-1499c1789ae3" ID-ISSN="1175-5326" ID-Zenodo-Dep="4930112" ID-ZooBank="24FCAAE1-AB7C-4FAD-8698-D0C9F12400EC" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1623442093486" checkinUser="felipe" docAuthor="Hryniewicz, Krzysztof, Little, Crispin T. S. &amp; Nakrem, Hans Arne" docDate="2014" docId="A2311D4D9F3BE30104E6F890FC592848" docLanguage="en" docName="zt03859p066.pdf" docOrigin="Zootaxa 3859 (1)" docStyle="DocumentStyle:5EBBA59367AD13919D70D935FA04F6A3.14:Zootaxa.2013-.monograph" docStyleId="5EBBA59367AD13919D70D935FA04F6A3" docStyleName="Zootaxa.2013-.monograph" docStyleVersion="14" docTitle="Cretaxinus Hryniewicz &amp; Little &amp; Nakrem 2014, gen. nov." docType="treatment" docUuid="9BA3E7C9-7D8D-4ED4-813A-0C8231EE5AF7" docUuidSource="ZooBank" docVersion="8" lastPageNumber="36" masterDocId="5E0865359F19E3250471FFA5FFA82955" masterDocTitle="Bivalves from the latest Jurassic-earliest Cretaceous hydrocarbon seep carbonates from central Spitsbergen, Svalbard" masterLastPageNumber="66" masterPageNumber="1" pageNumber="35" updateTime="1699013068164" updateUser="ExternalLinkService">
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<mods:title id="59FD6604AB9A424274DB7E2853554DB9">Bivalves from the latest Jurassic-earliest Cretaceous hydrocarbon seep carbonates from central Spitsbergen, Svalbard</mods:title>
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<mods:namePart id="1A2F72D95F6BD3BF68C07C6E1A262AEE">Hryniewicz, Krzysztof</mods:namePart>
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<mods:namePart id="FE11A2932F4FAFA71BDADF18A7FA1F6B">Little, Crispin T. S.</mods:namePart>
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<subSubSection id="6282FFD09F3BE30704E6F890FE402E1A" box="[151,488,1845,1871]" pageId="34" pageNumber="35" type="nomenclature">
<paragraph id="2A27AC5B9F3BE30704E6F890FE402E1A" blockId="34.[151,488,1845,1871]" box="[151,488,1845,1871]" pageId="34" pageNumber="35">
<emphasis id="18EC70499F3BE30704E6F890FE402E1A" bold="true" box="[151,488,1845,1871]" pageId="34" pageNumber="35">
Genus
<taxonomicName id="ED98D7D89F3BE307049FF890FEDB2E1A" authority="Hryniewicz &amp; Little &amp; Nakrem, 2014" authorityName="Hryniewicz &amp; Little &amp; Nakrem" authorityYear="2014" box="[238,371,1845,1871]" class="Bivalvia" family="Thyasiridae" genus="Cretaxinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Lucinida" pageId="34" pageNumber="35" phylum="Mollusca" rank="genus" status="gen. nov.">
<emphasis id="18EC70499F3BE307049FF890FEDB2E1A" bold="true" box="[238,371,1845,1871]" italics="true" pageId="34" pageNumber="35">Cretaxinus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="03DFCD329F3BE307050BF890FE402E1A" box="[378,488,1845,1871]" pageId="34" pageNumber="35" rank="genus">gen. nov.</taxonomicNameLabel>
</emphasis>
</paragraph>
</subSubSection>
<subSubSection id="6282FFD09F3BE30704E6F8D9FDC32EC0" box="[151,619,1916,1941]" pageId="34" pageNumber="35" type="type_taxon">
<paragraph id="2A27AC5B9F3BE30704E6F8D9FDC32EC0" blockId="34.[151,1436,1916,2013]" box="[151,619,1916,1941]" pageId="34" pageNumber="35">
<emphasis id="18EC70499F3BE30704E6F8D9FE9A2EC0" bold="true" box="[151,306,1916,1941]" pageId="34" pageNumber="35">
<typeStatus id="F52312F99F3BE30704E6F8D9FF7A2EC0" box="[151,210,1916,1941]" pageId="34" pageNumber="35">Type</typeStatus>
species.
</emphasis>
<taxonomicName id="ED98D7D89F3BE3070548F8D9FDA32EC0" authority="Hryniewicz &amp; Little &amp; Nakrem, 2014" authorityName="Hryniewicz &amp; Little &amp; Nakrem" authorityYear="2014" box="[313,523,1916,1941]" class="Bivalvia" family="Thyasiridae" genus="Cretaxinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Lucinida" pageId="34" pageNumber="35" phylum="Mollusca" rank="species" species="hurumi" status="sp. nov.">
<emphasis id="18EC70499F3BE3070548F8D9FDA32EC0" box="[313,523,1916,1941]" italics="true" pageId="34" pageNumber="35">Cretaxinus hurumi</emphasis>
</taxonomicName>
<emphasis id="18EC70499F3BE3070663F8D9FDC32EC0" bold="true" box="[530,619,1916,1941]" pageId="34" pageNumber="35">
<taxonomicNameLabel id="03DFCD329F3BE3070663F8D9FDC32EC0" box="[530,619,1916,1941]" pageId="34" pageNumber="35" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</paragraph>
</subSubSection>
<subSubSection id="6282FFD09F3BE30704B6F805FB762EED" box="[199,1246,1952,1977]" pageId="34" pageNumber="35" type="etymology">
<paragraph id="2A27AC5B9F3BE30704B6F805FB762EED" blockId="34.[151,1436,1916,2013]" box="[199,1246,1952,1977]" pageId="34" pageNumber="35">
<emphasis id="18EC70499F3BE30704B6F805FEE62EEC" bold="true" box="[199,334,1952,1977]" pageId="34" pageNumber="35">Etymology.</emphasis>
Refers to the Cretaceous occurrence of the
<typeStatus id="F52312F99F3BE3070746F804FCCF2EEC" box="[823,871,1953,1977]" pageId="34" pageNumber="35">type</typeStatus>
species, and to the genus
<taxonomicName id="ED98D7D89F3BE30700FAF805FB7F2EE2" authorityName="J. Sowerby" authorityYear="1821" box="[1163,1239,1952,1975]" class="Bivalvia" family="Thyasiridae" genus="Axinus" kingdom="Animalia" order="Lucinoida" pageId="34" pageNumber="35" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3BE30700FAF805FB7F2EE2" box="[1163,1239,1952,1975]" italics="true" pageId="34" pageNumber="35">Axinus</emphasis>
</taxonomicName>
.
</paragraph>
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<subSubSection id="6282FFD09F3BE30604B4F861FCA42815" lastPageId="35" lastPageNumber="36" pageId="34" pageNumber="35" type="diagnosis">
<paragraph id="2A27AC5B9F3BE30604B4F861FCA42815" blockId="34.[151,1436,1916,2013]" lastBlockId="35.[151,1437,151,789]" lastPageId="35" lastPageNumber="36" pageId="34" pageNumber="35">
<emphasis id="18EC70499F3BE30704B4F861FE972E88" bold="true" box="[197,319,1988,2013]" pageId="34" pageNumber="35">Diagnosis.</emphasis>
Shell inequilateral, triangular in outline, thin. Ornament of commarginal growth lines. Beaks weakly prosogyrate, not very prominent. Cardinal area edentulous, with small ligament groove. No lateral teeth. Lunule long and deep. Posterior sulcus shallow, posterior fold not very prominent. Submarginal sulcus shallow; no auricle. Ligament short, thick, external, with possible small internal portion. Anterior adductor muscle scar elongated, very weak; size difficult to estimate, but relatively small. Posterior adductor muscle scar larger than anterior one, circular, well impressed. Pallial line entire.
</paragraph>
</subSubSection>
<subSubSection id="6282FFD09F3AE30104B4FEE9FC592848" lastPageId="36" lastPageNumber="37" pageId="35" pageNumber="36" type="discussion">
<paragraph id="2A27AC5B9F3AE30604B4FEE9FB1C2A46" blockId="35.[151,1437,151,789]" pageId="35" pageNumber="36">
<emphasis id="18EC70499F3AE30604B4FEE9FE912830" bold="true" box="[197,313,332,357]" pageId="35" pageNumber="36">Remarks.</emphasis>
Comparison of
<taxonomicName id="ED98D7D89F3AE3060589FEE9FDDA2836" authority="Hryniewicz &amp; Little &amp; Nakrem, 2014" authorityName="Hryniewicz &amp; Little &amp; Nakrem" authorityYear="2014" box="[504,626,332,355]" class="Bivalvia" family="Thyasiridae" genus="Cretaxinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Lucinida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus" status="gen. nov.">
<emphasis id="18EC70499F3AE3060589FEE9FDDA2836" box="[504,626,332,355]" italics="true" pageId="35" pageNumber="36">Cretaxinus</emphasis>
</taxonomicName>
<emphasis id="18EC70499F3AE306060DFEE9FD402830" bold="true" box="[636,744,332,357]" pageId="35" pageNumber="36">
<taxonomicNameLabel id="03DFCD329F3AE306060DFEE9FD402830" box="[636,744,332,357]" pageId="35" pageNumber="36" rank="genus">gen. nov.</taxonomicNameLabel>
</emphasis>
with other large, chemosymbiotic thyasirids (
<bibRefCitation id="4E09D1AA9F3AE306008FFEE9FA3D2830" author="Dufour, S." box="[1278,1429,332,357]" pageId="35" pageNumber="36" pagination="200 - 212" refId="ref31928" refString="Dufour, S. (2005) Gill anatomy and the evolution of symbiosis in bivalve family Thyasiridae. Biological Bulletin, 208, 200 - 212. http: // dx. doi. org / 10.2307 / 3593152" type="journal article" year="2005">Dufour 2005</bibRefCitation>
) suggest it can be clearly differentiated from all of them (
<tableCitation id="671A99E09F3AE3060750FECAFCC528DD" box="[801,877,367,392]" captionStart="TABLE 2" captionStartId="35.[151,239,833,856]" captionTargetPageId="35" captionText="TABLE 2. The main characters distinguishing Cretaxinus gen. nov. from other large chemosymbiotic thyasirid genera." httpUri="http://table.plazi.org/id/7EE7FCD39F3AE30604E6FCE4FA272A0D" pageId="35" pageNumber="36" tableUuid="7EE7FCD39F3AE30604E6FCE4FA272A0D">Tab. 2</tableCitation>
). The most noticeable feature is its subtriangular shape, which is very distinct from the shapes of the genera
<taxonomicName id="ED98D7D89F3AE306073CFE31FBC428F8" authority="J. Sowerby, 1821" authorityName="J. Sowerby" authorityYear="1821" box="[845,1132,404,429]" class="Bivalvia" family="Thyasiridae" genus="Axinus" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE306073CFE31FC3128FE" box="[845,921,404,427]" italics="true" pageId="35" pageNumber="36">Axinus</emphasis>
J.
<bibRefCitation id="4E09D1AA9F3AE30607CEFE31FBC428F8" author="Sowerby, J." box="[959,1132,404,429]" pageId="35" pageNumber="36" pagination="1 - 16" refId="ref40257" refString="Sowerby, J. (1821) The Mineral Conchology of Great Britain 4 (1), J. Sowerby, London, 1 - 16, pls. 307 - 318. http: // dx. doi. org / 10.5962 / bhl. title. 14408" type="book chapter" year="1821">Sowerby, 1821</bibRefCitation>
</taxonomicName>
,
<taxonomicName id="ED98D7D89F3AE306000AFE31FA3028F8" authority="Lamarck, 1818" authorityName="Lamarck" authorityYear="1818" box="[1147,1432,404,429]" class="Bivalvia" family="Thyasiridae" genus="Thyasira" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE306000AFE31FB7728F8" box="[1147,1247,404,429]" italics="true" pageId="35" pageNumber="36">Thyasira</emphasis>
<bibRefCitation id="4E09D1AA9F3AE3060099FE31FA3028F8" author="Lamarck, J. B." box="[1256,1432,404,429]" pageId="35" pageNumber="36" refId="ref36305" refString="Lamarck, J. B. (1818) Histoire naturelle des animaux sans vertebres. Vol. 5, Deterville, Paris, 612 pp." type="book" year="1818">Lamarck, 1818</bibRefCitation>
</taxonomicName>
,
<taxonomicName id="ED98D7D89F3AE30604E6FE12FE622885" authority="Iredale, 1930" authorityName="Iredale" authorityYear="1930" box="[151,458,439,464]" class="Bivalvia" family="Thyasiridae" genus="Parathyasira" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE30604E6FE12FE832885" box="[151,299,439,464]" italics="true" pageId="35" pageNumber="36">Parathyasira</emphasis>
<bibRefCitation id="4E09D1AA9F3AE3060543FE12FE622885" author="Iredale, T." box="[306,458,439,464]" pageId="35" pageNumber="36" pagination="384 - 407" refId="ref34544" refString="Iredale, T. (1930) More notes on the marine Mollusca of New South Wales. Records of the Australian Museum, 17, 384 - 407. http: // dx. doi. org / 10.3853 / j. 0067 - 1975.17.1930.773" type="journal article" year="1930">Iredale, 1930</bibRefCitation>
</taxonomicName>
, and
<taxonomicName id="ED98D7D89F3AE3060677FE12FCBD2885" authority="Gabb, 1866" authorityName="Gabb" authorityYear="1866" box="[518,789,439,464]" class="Bivalvia" family="Thyasiridae" genus="Conchocele" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE3060677FE12FD222885" box="[518,650,439,464]" italics="true" pageId="35" pageNumber="36">Conchocele</emphasis>
<bibRefCitation id="4E09D1AA9F3AE30606E3FE12FCBD2885" author="Gabb, W. M." box="[658,789,439,464]" pageId="35" pageNumber="36" refId="ref32671" refString="Gabb, W. M. (1866) Paleontology of California. Vol. 2. Cretaceous and Tertiary fossils. Sect. 1 (Tertiary Invertebrate Fossils). Geological Survey of California, 124 pp., 18 pls." type="book" year="1866">Gabb, 1866</bibRefCitation>
</taxonomicName>
(
<tableCitation id="671A99E09F3AE3060754FE12FCC72885" box="[805,879,439,464]" captionStart="TABLE 2" captionStartId="35.[151,239,833,856]" captionTargetPageId="35" captionText="TABLE 2. The main characters distinguishing Cretaxinus gen. nov. from other large chemosymbiotic thyasirid genera." httpUri="http://table.plazi.org/id/7EE7FCD39F3AE30604E6FCE4FA272A0D" pageId="35" pageNumber="36" tableUuid="7EE7FCD39F3AE30604E6FCE4FA272A0D">Tab. 2</tableCitation>
). Another feature distinguishing
<taxonomicName id="ED98D7D89F3AE3060095FE1DFAF6289A" authorityName="Hryniewicz &amp; Little &amp; Nakrem" authorityYear="2014" box="[1252,1374,440,463]" class="Bivalvia" family="Thyasiridae" genus="Cretaxinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Lucinida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE3060095FE1DFAF6289A" box="[1252,1374,440,463]" italics="true" pageId="35" pageNumber="36">Cretaxinus</emphasis>
</taxonomicName>
from other thyasirids is its short, thick and external ligament set in a deep escutcheon, accompanied by a possible small internal portion. A similar feature is seen only in
<taxonomicName id="ED98D7D89F3AE30606AEFDA5FC832B42" authorityName="J. Sowerby" authorityYear="1821" box="[735,811,512,535]" class="Bivalvia" family="Thyasiridae" genus="Axinus" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE30606AEFDA5FC832B42" box="[735,811,512,535]" italics="true" pageId="35" pageNumber="36">Axinus</emphasis>
</taxonomicName>
. However,
<taxonomicName id="ED98D7D89F3AE30607C5FDA5FBA82B42" authorityName="J. Sowerby" authorityYear="1821" box="[948,1024,512,535]" class="Bivalvia" family="Thyasiridae" genus="Axinus" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE30607C5FDA5FBA82B42" box="[948,1024,512,535]" italics="true" pageId="35" pageNumber="36">Axinus</emphasis>
</taxonomicName>
has a totally different shape, sulci, adductor muscle proportions and external ornament (
<tableCitation id="671A99E09F3AE306069AFD81FC9D2B68" box="[747,821,548,573]" captionStart="TABLE 2" captionStartId="35.[151,239,833,856]" captionTargetPageId="35" captionText="TABLE 2. The main characters distinguishing Cretaxinus gen. nov. from other large chemosymbiotic thyasirid genera." httpUri="http://table.plazi.org/id/7EE7FCD39F3AE30604E6FCE4FA272A0D" pageId="35" pageNumber="36" tableUuid="7EE7FCD39F3AE30604E6FCE4FA272A0D">Tab. 2</tableCitation>
). The ligament of
<taxonomicName id="ED98D7D89F3AE3060074FD81FBD72B6E" authorityName="Hryniewicz &amp; Little &amp; Nakrem" authorityYear="2014" box="[1029,1151,548,571]" class="Bivalvia" family="Thyasiridae" genus="Cretaxinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Lucinida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE3060074FD81FBD72B6E" box="[1029,1151,548,571]" italics="true" pageId="35" pageNumber="36">Cretaxinus</emphasis>
</taxonomicName>
is very distinct from that of
<taxonomicName id="ED98D7D89F3AE30604C6FDE2FEB32B35" authorityName="Lamarck" authorityYear="1818" box="[183,283,583,608]" class="Bivalvia" family="Thyasiridae" genus="Thyasira" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE30604C6FDE2FEB32B35" box="[183,283,583,608]" italics="true" pageId="35" pageNumber="36">Thyasira</emphasis>
</taxonomicName>
,
<taxonomicName id="ED98D7D89F3AE306055AFDE2FE172B35" authorityName="Iredale" authorityYear="1930" box="[299,447,583,608]" class="Bivalvia" family="Thyasiridae" genus="Parathyasira" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE306055AFDE2FE172B35" box="[299,447,583,608]" italics="true" pageId="35" pageNumber="36">Parathyasira</emphasis>
</taxonomicName>
and
<emphasis id="18EC70499F3AE306058BFDE2FD2D2B35" box="[506,645,583,608]" italics="true" pageId="35" pageNumber="36">
<taxonomicName id="ED98D7D89F3AE306058BFDE2FD292B35" authorityName="Gabb" authorityYear="1866" box="[506,641,583,608]" class="Bivalvia" family="Thyasiridae" genus="Conchocele" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">Conchocele</taxonomicName>
,
</emphasis>
all of which have variably long, sunken ligaments (
<tableCitation id="671A99E09F3AE30600AFFDE2FA802B35" box="[1246,1320,583,608]" captionStart="TABLE 2" captionStartId="35.[151,239,833,856]" captionTargetPageId="35" captionText="TABLE 2. The main characters distinguishing Cretaxinus gen. nov. from other large chemosymbiotic thyasirid genera." httpUri="http://table.plazi.org/id/7EE7FCD39F3AE30604E6FCE4FA272A0D" pageId="35" pageNumber="36" tableUuid="7EE7FCD39F3AE30604E6FCE4FA272A0D">Tab. 2</tableCitation>
). Another major difference between
<taxonomicName id="ED98D7D89F3AE30605B7FDC9FDE82BD6" authorityName="Hryniewicz &amp; Little &amp; Nakrem" authorityYear="2014" box="[454,576,620,643]" class="Bivalvia" family="Thyasiridae" genus="Cretaxinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Lucinida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE30605B7FDC9FDE82BD6" box="[454,576,620,643]" italics="true" pageId="35" pageNumber="36">Cretaxinus</emphasis>
</taxonomicName>
and
<taxonomicName id="ED98D7D89F3AE306060CFDC9FD612BD6" authorityName="J. Sowerby" authorityYear="1821" box="[637,713,620,643]" class="Bivalvia" family="Thyasiridae" genus="Axinus" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE306060CFDC9FD612BD6" box="[637,713,620,643]" italics="true" pageId="35" pageNumber="36">Axinus</emphasis>
</taxonomicName>
,
<taxonomicName id="ED98D7D89F3AE30606AAFDC9FC972BD0" authorityName="Lamarck" authorityYear="1818" box="[731,831,620,645]" class="Bivalvia" family="Thyasiridae" genus="Thyasira" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE30606AAFDC9FC972BD0" box="[731,831,620,645]" italics="true" pageId="35" pageNumber="36">Thyasira</emphasis>
</taxonomicName>
,
<taxonomicName id="ED98D7D89F3AE306073EFDC9FC4B2BD0" authorityName="Iredale" authorityYear="1930" box="[847,995,620,645]" class="Bivalvia" family="Thyasiridae" genus="Parathyasira" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE306073EFDC9FC4B2BD0" box="[847,995,620,645]" italics="true" pageId="35" pageNumber="36">Parathyasira</emphasis>
</taxonomicName>
and
<taxonomicName id="ED98D7D89F3AE3060050FDC9FB0D2BD0" authorityName="Gabb" authorityYear="1866" box="[1057,1189,620,645]" class="Bivalvia" family="Thyasiridae" genus="Conchocele" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE3060050FDC9FB0D2BD0" box="[1057,1189,620,645]" italics="true" pageId="35" pageNumber="36">Conchocele</emphasis>
</taxonomicName>
is the proportions of adductor muscle scars. In
<taxonomicName id="ED98D7D89F3AE30605BEFD35FDE12BF2" authorityName="Hryniewicz &amp; Little &amp; Nakrem" authorityYear="2014" box="[463,585,656,679]" class="Bivalvia" family="Thyasiridae" genus="Cretaxinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Lucinida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE30605BEFD35FDE12BF2" box="[463,585,656,679]" italics="true" pageId="35" pageNumber="36">Cretaxinus</emphasis>
</taxonomicName>
the anterior adductor muscle scar is small and weak, and the posterior adductor muscle scar is large and well impressed; in the other genera the proportions of the muscle scars are reversed. The sulci are less distinct and somehow anteroposteriorly flattened in comparison to the sulci of the other discussed genera. The escutcheon is wider and deeper than that of
<taxonomicName id="ED98D7D89F3AE30607F1FD59FC4C2A40" authorityName="Lamarck" authorityYear="1818" box="[896,996,764,789]" class="Bivalvia" family="Thyasiridae" genus="Thyasira" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE30607F1FD59FC4C2A40" box="[896,996,764,789]" italics="true" pageId="35" pageNumber="36">Thyasira</emphasis>
</taxonomicName>
and
<taxonomicName id="ED98D7D89F3AE306006BFD59FB062A40" authorityName="Iredale" authorityYear="1930" box="[1050,1198,764,789]" class="Bivalvia" family="Thyasiridae" genus="Parathyasira" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE306006BFD59FB062A40" box="[1050,1198,764,789]" italics="true" pageId="35" pageNumber="36">Parathyasira</emphasis>
</taxonomicName>
.
</paragraph>
<caption id="7EE7FCD39F3AE30604E6FCE4FA272A0D" ID-Table-UUID="7EE7FCD39F3AE30604E6FCE4FA272A0D" box="[151,1423,833,856]" httpUri="http://table.plazi.org/id/7EE7FCD39F3AE30604E6FCE4FA272A0D" pageId="35" pageNumber="36" startId="35.[151,239,833,856]" targetBox="[159,1416,884,1583]" targetIsTable="true" targetPageId="35">
<paragraph id="2A27AC5B9F3AE30604E6FCE4FA272A0D" blockId="35.[151,1423,833,856]" box="[151,1423,833,856]" pageId="35" pageNumber="36">
<emphasis id="18EC70499F3AE30604E6FCE4FEA12A0D" bold="true" box="[151,265,833,856]" pageId="35" pageNumber="36">TABLE 2.</emphasis>
The main characters distinguishing
<taxonomicName id="ED98D7D89F3AE30606FCFCE4FCA92A0D" authority="Hryniewicz &amp; Little &amp; Nakrem, 2014" authorityName="Hryniewicz &amp; Little &amp; Nakrem" authorityYear="2014" box="[653,769,833,856]" class="Bivalvia" family="Thyasiridae" genus="Cretaxinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Lucinida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus" status="gen. nov.">
<emphasis id="18EC70499F3AE30606FCFCE4FCA92A0D" box="[653,769,833,856]" italics="true" pageId="35" pageNumber="36">Cretaxinus</emphasis>
</taxonomicName>
<emphasis id="18EC70499F3AE3060779FCE4FCC42A0D" bold="true" box="[776,876,833,856]" pageId="35" pageNumber="36">
<taxonomicNameLabel id="03DFCD329F3AE3060779FCE4FCC42A0D" box="[776,876,833,856]" pageId="35" pageNumber="36" rank="genus">gen. nov.</taxonomicNameLabel>
</emphasis>
from other large chemosymbiotic thyasirid genera.
</paragraph>
</caption>
<paragraph id="2A27AC5B9F3AE30604D0FCD1FA912CE1" pageId="35" pageNumber="36">
<table id="58985EFB9F3A1CDA04EEFCD1FA202F7A" box="[159,1416,884,1583]" gridcols="6" gridrows="7" pageId="35" pageNumber="36">
<tr id="94A8AE199F3A1CDA04EEFCD1FA202AFD" box="[159,1416,884,936]" gridrow="0" pageId="35" pageNumber="36">
<th id="D779C7659F3A1CDA04EEFCD1FE802AFD" box="[159,296,884,936]" gridcol="0" gridrow="0" pageId="35" pageNumber="36">Genus</th>
<th id="D779C7659F3A1CDA0526FCD1FDBD2AFD" box="[343,533,884,936]" gridcol="1" gridrow="0" pageId="35" pageNumber="36">
<taxonomicName id="ED98D7D89F3AE3060526FCD1FE6D2ADF" authority="Hryniewicz &amp; Little &amp; Nakrem, 2014" authorityName="Hryniewicz &amp; Little &amp; Nakrem" authorityYear="2014" box="[343,453,884,906]" class="Bivalvia" family="Thyasiridae" genus="Cretaxinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Lucinida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus" status="gen. nov.">
<emphasis id="18EC70499F3AE3060526FCD1FE6D2ADF" box="[343,453,884,906]" italics="true" pageId="35" pageNumber="36">Cretaxinus</emphasis>
</taxonomicName>
<emphasis id="18EC70499F3AE30605BDFCD1FE2B2AFD" bold="true" pageId="35" pageNumber="36">
<taxonomicNameLabel id="03DFCD329F3AE30605BDFCD1FE2B2AFD" pageId="35" pageNumber="36" rank="genus">gen. nov.</taxonomicNameLabel>
</emphasis>
</th>
<th id="D779C7659F3A1CDA065BFCD1FD702AFD" box="[554,728,884,936]" gridcol="2" gridrow="0" pageId="35" pageNumber="36">
<taxonomicName id="ED98D7D89F3AE306065BFCD1FD6A2AFD" authority="J. Sowerby, 1821" authorityName="J. Sowerby" authorityYear="1821" class="Bivalvia" family="Thyasiridae" genus="Axinus" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE306065BFCD1FDC72ADF" box="[554,623,884,906]" italics="true" pageId="35" pageNumber="36">Axinus</emphasis>
J.
<bibRefCitation id="4E09D1AA9F3AE306065BFC37FD6A2AFD" author="Sowerby, J." box="[554,706,914,936]" pageId="35" pageNumber="36" pagination="1 - 16" refId="ref40257" refString="Sowerby, J. (1821) The Mineral Conchology of Great Britain 4 (1), J. Sowerby, London, 1 - 16, pls. 307 - 318. http: // dx. doi. org / 10.5962 / bhl. title. 14408" type="book chapter" year="1821">Sowerby, 1821</bibRefCitation>
</taxonomicName>
</th>
<th id="D779C7659F3A1CDA0682FCD1FC632AFD" box="[755,971,884,936]" gridcol="3" gridrow="0" pageId="35" pageNumber="36">
<taxonomicName id="ED98D7D89F3AE3060682FCD1FC8E2AFD" authority="Lamarck, 1818" authorityName="Lamarck" authorityYear="1818" class="Bivalvia" family="Thyasiridae" genus="Thyasira" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE3060682FCD1FCE52ADF" box="[755,845,884,906]" italics="true" pageId="35" pageNumber="36">Thyasira</emphasis>
<bibRefCitation id="4E09D1AA9F3AE3060722FCD1FC8E2AFD" author="Lamarck, J. B." pageId="35" pageNumber="36" refId="ref36305" refString="Lamarck, J. B. (1818) Histoire naturelle des animaux sans vertebres. Vol. 5, Deterville, Paris, 612 pp." type="book" year="1818">Lamarck, 1818</bibRefCitation>
</taxonomicName>
</th>
<th id="D779C7659F3A1CDA0791FCD1FB322AFD" box="[992,1178,884,936]" gridcol="4" gridrow="0" pageId="35" pageNumber="36">
<taxonomicName id="ED98D7D89F3AE3060791FCD1FBCE2AFD" authority="Iredale, 1930" authorityName="Iredale" authorityYear="1930" box="[992,1126,884,936]" class="Bivalvia" family="Thyasiridae" genus="Parathyasira" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE3060791FCD1FBCE2ADF" box="[992,1126,884,906]" italics="true" pageId="35" pageNumber="36">Parathyasira</emphasis>
<bibRefCitation id="4E09D1AA9F3AE3060791FC37FBCE2AFD" author="Iredale, T." box="[992,1126,914,936]" pageId="35" pageNumber="36" pagination="384 - 407" refId="ref34544" refString="Iredale, T. (1930) More notes on the marine Mollusca of New South Wales. Records of the Australian Museum, 17, 384 - 407. http: // dx. doi. org / 10.3853 / j. 0067 - 1975.17.1930.773" type="journal article" year="1930">Iredale, 1930</bibRefCitation>
</taxonomicName>
</th>
<th id="D779C7659F3A1CDA00DFFCD1FA202AFD" box="[1198,1416,884,936]" gridcol="5" gridrow="0" pageId="35" pageNumber="36">
<taxonomicName id="ED98D7D89F3AE30600DFFCD1FB492AFD" authority="Gabb, 1866" authorityName="Gabb" authorityYear="1866" class="Bivalvia" family="Thyasiridae" genus="Conchocele" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE30600DFFCD1FA8D2ADF" box="[1198,1317,884,906]" italics="true" pageId="35" pageNumber="36">Conchocele</emphasis>
<bibRefCitation id="4E09D1AA9F3AE306015DFCD1FB492AFD" author="Gabb, W. M." pageId="35" pageNumber="36" refId="ref32671" refString="Gabb, W. M. (1866) Paleontology of California. Vol. 2. Cretaceous and Tertiary fossils. Sect. 1 (Tertiary Invertebrate Fossils). Geological Survey of California, 124 pp., 18 pls." type="book" year="1866">Gabb, 1866</bibRefCitation>
</taxonomicName>
</th>
</tr>
<tr id="94A8AE199F3A1CDA04EEFC19FA202AA5" box="[159,1416,956,1008]" gridrow="1" pageId="35" pageNumber="36">
<th id="D779C7659F3A1CDA04EEFC19FE802AA5" box="[159,296,956,1008]" gridcol="0" gridrow="1" pageId="35" pageNumber="36">Shape</th>
<td id="D779C7659F3A1CDA0526FC19FDBD2AA5" box="[343,533,956,1008]" gridcol="1" gridrow="1" pageId="35" pageNumber="36">Subtriangular</td>
<td id="D779C7659F3A1CDA065BFC19FD702AA5" box="[554,728,956,1008]" gridcol="2" gridrow="1" pageId="35" pageNumber="36">Subhexangular</td>
<td id="D779C7659F3A1CDA0682FC19FC632AA5" box="[755,971,956,1008]" gridcol="3" gridrow="1" pageId="35" pageNumber="36">Ovate to ovate- polygonal</td>
<td id="D779C7659F3A1CDA0791FC19FB322AA5" box="[992,1178,956,1008]" gridcol="4" gridrow="1" pageId="35" pageNumber="36">Ovate to ovate diamond-shaped</td>
<td id="D779C7659F3A1CDA00DFFC19FA202AA5" box="[1198,1416,956,1008]" gridcol="5" gridrow="1" pageId="35" pageNumber="36">Subquadrangular</td>
</tr>
<tr id="94A8AE199F3A1CDA04EEFBA1FA202D6D" box="[159,1416,1028,1080]" gridrow="2" pageId="35" pageNumber="36">
<th id="D779C7659F3A1CDA04EEFBA1FE802D6D" box="[159,296,1028,1080]" gridcol="0" gridrow="2" pageId="35" pageNumber="36">Ornament</th>
<td id="D779C7659F3A1CDA0526FBA1FDBD2D6D" box="[343,533,1028,1080]" gridcol="1" gridrow="2" pageId="35" pageNumber="36">Commarginal growth lines</td>
<td id="D779C7659F3A1CDA065BFBA1FD702D6D" box="[554,728,1028,1080]" gridcol="2" gridrow="2" pageId="35" pageNumber="36">Commarginal wavy ridges</td>
<td id="D779C7659F3A1CDA0682FBA1FC632D6D" box="[755,971,1028,1080]" gridcol="3" gridrow="2" pageId="35" pageNumber="36">Commarginal growth lines</td>
<td id="D779C7659F3A1CDA0791FBA1FB322D6D" box="[992,1178,1028,1080]" gridcol="4" gridrow="2" pageId="35" pageNumber="36">Commarginal growth lines</td>
<td id="D779C7659F3A1CDA00DFFBA1FA202D6D" box="[1198,1416,1028,1080]" gridcol="5" gridrow="2" pageId="35" pageNumber="36">Commarginal growth lines</td>
</tr>
<tr id="94A8AE199F3A1CDA04EEFBE9FA202DCA" box="[159,1416,1100,1183]" gridrow="3" pageId="35" pageNumber="36">
<th id="D779C7659F3A1CDA04EEFBE9FE802DCA" box="[159,296,1100,1183]" gridcol="0" gridrow="3" pageId="35" pageNumber="36">Ligament</th>
<td id="D779C7659F3A1CDA0526FBE9FDBD2DCA" box="[343,533,1100,1183]" gridcol="1" gridrow="3" pageId="35" pageNumber="36">Thick and external with small internal part</td>
<td id="D779C7659F3A1CDA065BFBE9FD702DCA" box="[554,728,1100,1183]" gridcol="2" gridrow="3" pageId="35" pageNumber="36">Partially external</td>
<td id="D779C7659F3A1CDA0682FBE9FC632DCA" box="[755,971,1100,1183]" gridcol="3" gridrow="3" pageId="35" pageNumber="36">Variably sunken, short to medium</td>
<td id="D779C7659F3A1CDA0791FBE9FB322DCA" box="[992,1178,1100,1183]" gridcol="4" gridrow="3" pageId="35" pageNumber="36">Sunken, short to medium</td>
<td id="D779C7659F3A1CDA00DFFBE9FA202DCA" box="[1198,1416,1100,1183]" gridcol="5" gridrow="3" pageId="35" pageNumber="36">Thick, sunken and long</td>
</tr>
<tr id="94A8AE199F3A1CDA04EEFB17FA202C53" box="[159,1416,1202,1286]" gridrow="4" pageId="35" pageNumber="36">
<th id="D779C7659F3A1CDA04EEFB17FE802C53" box="[159,296,1202,1286]" gridcol="0" gridrow="4" pageId="35" pageNumber="36">Character of posterodorsal margin</th>
<td id="D779C7659F3A1CDA0526FB17FDBD2C53" box="[343,533,1202,1286]" gridcol="1" gridrow="4" pageId="35" pageNumber="36">Ps, (sms), no auricle, wide and deep escutcheon</td>
<td id="D779C7659F3A1CDA065BFB17FD702C53" box="[554,728,1202,1286]" gridcol="2" gridrow="4" pageId="35" pageNumber="36">Ps, no auricle, small escutcheon</td>
<td id="D779C7659F3A1CDA0682FB17FC632C53" box="[755,971,1202,1286]" gridcol="3" gridrow="4" pageId="35" pageNumber="36">Ps, sms, auricle, variable escutcheon</td>
<td id="D779C7659F3A1CDA0791FB17FB322C53" box="[992,1178,1202,1286]" gridcol="4" gridrow="4" pageId="35" pageNumber="36">Ps, no auricle, ill- defined escutcheon</td>
<td id="D779C7659F3A1CDA00DFFB17FA202C53" box="[1198,1416,1202,1286]" gridcol="5" gridrow="4" pageId="35" pageNumber="36">Ps, (sms), no auricle, no escutcheon</td>
</tr>
<tr id="94A8AE199F3A1CDA04EEFABCFA202C39" box="[159,1416,1305,1388]" gridrow="5" pageId="35" pageNumber="36">
<th id="D779C7659F3A1CDA04EEFABCFE802C39" box="[159,296,1305,1388]" gridcol="0" gridrow="5" pageId="35" pageNumber="36">Adductor muscle scars</th>
<td id="D779C7659F3A1CDA0526FABCFDBD2C39" box="[343,533,1305,1388]" gridcol="1" gridrow="5" pageId="35" pageNumber="36">AAMS smaller and weaker than PAMS</td>
<td id="D779C7659F3A1CDA065BFABCFD702C39" box="[554,728,1305,1388]" gridcol="2" gridrow="5" pageId="35" pageNumber="36">AAMS ≈ PAMS</td>
<td id="D779C7659F3A1CDA0682FABCFC632C39" box="[755,971,1305,1388]" gridcol="3" gridrow="5" pageId="35" pageNumber="36">AAMS larger than PAMS</td>
<td id="D779C7659F3A1CDA0791FABCFB322C39" box="[992,1178,1305,1388]" gridcol="4" gridrow="5" pageId="35" pageNumber="36">AAMS larger than PAMS</td>
<td id="D779C7659F3A1CDA00DFFABCFA202C39" box="[1198,1416,1305,1388]" gridcol="5" gridrow="5" pageId="35" pageNumber="36">AAMS much larger than PAMS</td>
</tr>
<tr id="94A8AE199F3A1CDA04EEFA25FA202F7A" box="[159,1416,1408,1583]" gridrow="6" pageId="35" pageNumber="36">
<th id="D779C7659F3A1CDA04EEFA25FE802F7A" box="[159,296,1408,1583]" gridcol="0" gridrow="6" pageId="35" pageNumber="36">Reference</th>
<td id="D779C7659F3A1CDA0526FA25FDBD2F7A" box="[343,533,1408,1583]" gridcol="1" gridrow="6" pageId="35" pageNumber="36">This study</td>
<td id="D779C7659F3A1CDA065BFA25FD702F7A" box="[554,728,1408,1583]" gridcol="2" gridrow="6" pageId="35" pageNumber="36">
<bibRefCitation id="4E09D1AA9F3AE306065BFA25FDF72CE1" author="Payne, C. M. &amp; Allen, J. A." pageId="35" pageNumber="36" pagination="481 - 562" refId="ref38443" refString="Payne, C. M. &amp; Allen, J. A. (1991) The morphology of deep-sea Thyasiridae (Mollusca: Bivalvia) from the Atlantic Ocean. Philosophical Transactions: Biological Sciences, 334, 481 - 562. http: // dx. doi. org / 10.1098 / rstb. 1991.0128" type="journal article" year="1991">Payne &amp; Allen 1991</bibRefCitation>
; Löffler
<emphasis id="18EC70499F3AE30606C6FA3AFDED2C86" italics="true" pageId="35" pageNumber="36">et al.</emphasis>
2006;
<bibRefCitation id="4E09D1AA9F3AE30606FBFA18FD642CA7" author="Oliver, G. P. &amp; Holmes, A. M." pageId="35" pageNumber="36" pagination="363 - 376" refId="ref37952" refString="Oliver, G. P. &amp; Holmes, A. M. (2007) A new species of Axinus (Bivalvia: Thyasiroidea) from the Baby Bare Seamount, Cascadia Basin, NE Pacific, with a description of the anatomy. Journal of Conchology, 39, 363 - 376." type="journal article" year="2007">Oliver &amp; Holmes 2007</bibRefCitation>
</td>
<td id="D779C7659F3A1CDA0682FA25FC632F7A" box="[755,971,1408,1583]" gridcol="3" gridrow="6" pageId="35" pageNumber="36">
<bibRefCitation id="4E09D1AA9F3AE3060682FA25FC6C2CC3" author="Payne, C. M. &amp; Allen, J. A." box="[755,964,1408,1430]" pageId="35" pageNumber="36" pagination="481 - 562" refId="ref38443" refString="Payne, C. M. &amp; Allen, J. A. (1991) The morphology of deep-sea Thyasiridae (Mollusca: Bivalvia) from the Atlantic Ocean. Philosophical Transactions: Biological Sciences, 334, 481 - 562. http: // dx. doi. org / 10.1098 / rstb. 1991.0128" type="journal article" year="1991">Payne &amp; Allen 1991</bibRefCitation>
;
<bibRefCitation id="4E09D1AA9F3AE3060682FA3BFC812C86" author="Oliver, G. P. &amp; Killeen, I. J." pageId="35" pageNumber="36" pagination="1 - 73" refId="ref38007" refString="Oliver, G. P. &amp; Killeen, I. J. (2002) The Thyasiridae (Mollusca: Bivalvia) of the British continental shelf and North Sea oilfields. Biomor Reports, 3, 1 - 73." type="journal article" year="2002">Oliver &amp; Killeen 2002</bibRefCitation>
;
<bibRefCitation id="4E09D1AA9F3AE3060742FA18FCD62CA7" author="Oliver, G. P. &amp; Holmes, A. M." pageId="35" pageNumber="36" pagination="175 - 183" refId="ref37911" refString="Oliver, G. P. &amp; Holmes, A. M. (2006) New species of Thyasiridae (Bivalvia) from chemosynthetic communities in the Atlantic Ocean. Journal of Conchology, 39, 175 - 183." type="journal article" year="2006">Oliver &amp; Holmes 2006</bibRefCitation>
;
<bibRefCitation id="4E09D1AA9F3AE3060682FA5FFC812F7A" author="Rodrigues, C. F. &amp; Oliver, G. P. &amp; Cunha, M. R." pageId="35" pageNumber="36" pagination="41 - 56" refId="ref39096" refString="Rodrigues, C. F., Oliver, G. P. &amp; Cunha, M. R. (2008) Thyasiroidea (Mollusca: Bivalvia) from the mud volcanoes of the Gulf of Cadiz. Zootaxa, 1752, 41 - 56." type="journal article" year="2008">
Rodrigues
<emphasis id="18EC70499F3AE3060710FA5EFC3C2F45" box="[865,916,1530,1552]" italics="true" pageId="35" pageNumber="36">et al.</emphasis>
2008
</bibRefCitation>
;
<bibRefCitation id="4E09D1AA9F3AE3060742F9BCFC192F7A" author="Zelaya, D. G." box="[819,945,1561,1583]" pageId="35" pageNumber="36" pagination="271 - 290" refId="ref43244" refString="Zelaya, D. G. (2009) The genera Thyasira and Parathyasira in the Magellan region and adjacent Antarctic waters (Bivalvia: Thyasiridae). Malacologia, 51, 271 - 290. http: // dx. doi. org / 10.4002 / 040.051.0204" type="journal article" year="2009">Zelaya 2009</bibRefCitation>
</td>
<td id="D779C7659F3A1CDA0791FA25FB322F7A" box="[992,1178,1408,1583]" gridcol="4" gridrow="6" pageId="35" pageNumber="36">
<bibRefCitation id="4E09D1AA9F3AE3060791FA25FBCB2CC3" author="Iredale, T." box="[992,1123,1408,1430]" pageId="35" pageNumber="36" pagination="384 - 407" refId="ref34544" refString="Iredale, T. (1930) More notes on the marine Mollusca of New South Wales. Records of the Australian Museum, 17, 384 - 407. http: // dx. doi. org / 10.3853 / j. 0067 - 1975.17.1930.773" type="journal article" year="1930">Iredale 1930</bibRefCitation>
;
<bibRefCitation id="4E09D1AA9F3AE3060791FA3AFBBE2C86" author="Payne, C. M. &amp; Allen, J. A." pageId="35" pageNumber="36" pagination="481 - 562" refId="ref38443" refString="Payne, C. M. &amp; Allen, J. A. (1991) The morphology of deep-sea Thyasiridae (Mollusca: Bivalvia) from the Atlantic Ocean. Philosophical Transactions: Biological Sciences, 334, 481 - 562. http: // dx. doi. org / 10.1098 / rstb. 1991.0128" type="journal article" year="1991">Payne &amp; Allen 1991</bibRefCitation>
;
<bibRefCitation id="4E09D1AA9F3AE3060051FA18FBCF2CA7" author="Oliver, G. P. &amp; Killeen, I. J." pageId="35" pageNumber="36" pagination="1 - 73" refId="ref38007" refString="Oliver, G. P. &amp; Killeen, I. J. (2002) The Thyasiridae (Mollusca: Bivalvia) of the British continental shelf and North Sea oilfields. Biomor Reports, 3, 1 - 73." type="journal article" year="2002">Oliver &amp; Killeen 2002</bibRefCitation>
;
<bibRefCitation id="4E09D1AA9F3AE3060791FA5FFBF62F45" author="Zelaya, D. G." box="[992,1118,1530,1552]" pageId="35" pageNumber="36" pagination="271 - 290" refId="ref43244" refString="Zelaya, D. G. (2009) The genera Thyasira and Parathyasira in the Magellan region and adjacent Antarctic waters (Bivalvia: Thyasiridae). Malacologia, 51, 271 - 290. http: // dx. doi. org / 10.4002 / 040.051.0204" type="journal article" year="2009">Zelaya 2009</bibRefCitation>
</td>
<td id="D779C7659F3A1CDA00DFFA25FA202F7A" box="[1198,1416,1408,1583]" gridcol="5" gridrow="6" pageId="35" pageNumber="36">
<bibRefCitation id="4E09D1AA9F3AE30600DFFA25FA2C2CC3" author="Kamenev, G. M. &amp; Nadtochy, V. A. &amp; Kuznetsov, A. P." box="[1198,1412,1408,1430]" pageId="35" pageNumber="36" pagination="84 - 94" refId="ref35129" refString="Kamenev, G. M., Nadtochy, V. A. &amp; Kuznetsov, A. P. (2001) Conchocele bisecta (Conrad, 1849) (Bivalvia: Thyasiridae) from cold-water methane-rich areas of the Sea of Okhotsk. The Veliger, 44, 84 - 94." type="journal article" year="2001">
Kamenev
<emphasis id="18EC70499F3AE3060164FA24FAE02CC3" box="[1301,1352,1408,1430]" italics="true" pageId="35" pageNumber="36">et al.</emphasis>
2001
</bibRefCitation>
;
<bibRefCitation id="4E09D1AA9F3AE30600DFFA3BFA912CE1" author="Okutani, T." box="[1198,1337,1438,1460]" pageId="35" pageNumber="36" pagination="141 - 145" refId="ref37825" refString="Okutani, T. (2002) A new thyasirid, Conchocele novaeguinensis n. sp. from a thanatocoenosis associated with a possible cold seep activity off New Guinea. Venus, 61, 141 - 145." type="journal article" year="2002">Okutani 2002</bibRefCitation>
</td>
</tr>
</table>
</paragraph>
<paragraph id="2A27AC5B9F3AE30604B4F9EAFD662EDD" blockId="35.[151,1437,1615,2037]" pageId="35" pageNumber="36">
Knowledge of small thyasirid species is far less complete than of their large relatives (
<bibRefCitation id="4E09D1AA9F3AE30600D6F9EAFA3F2F3D" author="Payne, C. M. &amp; Allen, J. A." box="[1191,1431,1615,1640]" pageId="35" pageNumber="36" pagination="481 - 562" refId="ref38443" refString="Payne, C. M. &amp; Allen, J. A. (1991) The morphology of deep-sea Thyasiridae (Mollusca: Bivalvia) from the Atlantic Ocean. Philosophical Transactions: Biological Sciences, 334, 481 - 562. http: // dx. doi. org / 10.1098 / rstb. 1991.0128" type="journal article" year="1991">Payne &amp; Allen 1991</bibRefCitation>
;
<bibRefCitation id="4E09D1AA9F3AE30604E6F9D1FE0B2FD8" author="Oliver, G. P. &amp; Killeen, I. J." box="[151,419,1652,1677]" pageId="35" pageNumber="36" pagination="1 - 73" refId="ref38007" refString="Oliver, G. P. &amp; Killeen, I. J. (2002) The Thyasiridae (Mollusca: Bivalvia) of the British continental shelf and North Sea oilfields. Biomor Reports, 3, 1 - 73." type="journal article" year="2002">Oliver &amp; Killeen 2002</bibRefCitation>
) and therefore their direct comparison with
<taxonomicName id="ED98D7D89F3AE30607DFF9D1FB802FDE" authority="Hryniewicz &amp; Little &amp; Nakrem, 2014" authorityName="Hryniewicz &amp; Little &amp; Nakrem" authorityYear="2014" box="[942,1064,1652,1675]" class="Bivalvia" family="Thyasiridae" genus="Cretaxinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Lucinida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus" status="gen. nov.">
<emphasis id="18EC70499F3AE30607DFF9D1FB802FDE" box="[942,1064,1652,1675]" italics="true" pageId="35" pageNumber="36">Cretaxinus</emphasis>
</taxonomicName>
<emphasis id="18EC70499F3AE3060045F9D1FB092FD8" bold="true" box="[1076,1185,1652,1677]" pageId="35" pageNumber="36">
<taxonomicNameLabel id="03DFCD329F3AE3060045F9D1FB092FD8" box="[1076,1185,1652,1677]" pageId="35" pageNumber="36" rank="genus">gen. nov.</taxonomicNameLabel>
</emphasis>
is more problematic.
<taxonomicName id="ED98D7D89F3AE30604E6F932FE052FE5" authority="Iredale, 1924" authorityName="Iredale" authorityYear="1924" box="[151,429,1687,1712]" class="Bivalvia" family="Thyasiridae" genus="Mendicula" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE30604E6F932FEA72FE5" box="[151,271,1687,1712]" italics="true" pageId="35" pageNumber="36">Mendicula</emphasis>
<bibRefCitation id="4E09D1AA9F3AE3060567F932FE052FE5" author="Iredale, T." box="[278,429,1687,1712]" pageId="35" pageNumber="36" pagination="179 - 278" refId="ref34514" refString="Iredale, T. (1924) Results from Roy Bell's Molluscan collections. Proceedings of the Linnean Society of New South Wales, 49, 179 - 278." type="journal article" year="1924">Iredale, 1924</bibRefCitation>
</taxonomicName>
, has a very small, oval shell (&lt;
<quantity id="ED6001BE9F3AE306077DF932FCE42FFA" box="[780,844,1687,1712]" metricMagnitude="-3" metricUnit="m" metricValue="3.0" pageId="35" pageNumber="36" unit="mm" value="3.0">3 mm</quantity>
in length) with a pointed posterior margin (
<bibRefCitation id="4E09D1AA9F3AE3060148F932FEB22F80" author="Payne, C. M. &amp; Allen, J. A." pageId="35" pageNumber="36" pagination="481 - 562" refId="ref38443" refString="Payne, C. M. &amp; Allen, J. A. (1991) The morphology of deep-sea Thyasiridae (Mollusca: Bivalvia) from the Atlantic Ocean. Philosophical Transactions: Biological Sciences, 334, 481 - 562. http: // dx. doi. org / 10.1098 / rstb. 1991.0128" type="journal article" year="1991">Payne &amp; Allen 1991</bibRefCitation>
;
<bibRefCitation id="4E09D1AA9F3AE3060558F919FD9C2F80" author="Oliver, G. P. &amp; Killeen, I. J." box="[297,564,1724,1749]" pageId="35" pageNumber="36" pagination="1 - 73" refId="ref38007" refString="Oliver, G. P. &amp; Killeen, I. J. (2002) The Thyasiridae (Mollusca: Bivalvia) of the British continental shelf and North Sea oilfields. Biomor Reports, 3, 1 - 73." type="journal article" year="2002">Oliver &amp; Killeen 2002</bibRefCitation>
), unlike
<taxonomicName id="ED98D7D89F3AE30606EAF919FCBD2F86" authority="Hryniewicz &amp; Little &amp; Nakrem, 2014" authorityName="Hryniewicz &amp; Little &amp; Nakrem" authorityYear="2014" box="[667,789,1724,1747]" class="Bivalvia" family="Thyasiridae" genus="Cretaxinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Lucinida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus" status="gen. nov.">
<emphasis id="18EC70499F3AE30606EAF919FCBD2F86" box="[667,789,1724,1747]" italics="true" pageId="35" pageNumber="36">Cretaxinus</emphasis>
</taxonomicName>
<emphasis id="18EC70499F3AE306076EF919FC232F80" bold="true" box="[799,907,1724,1749]" pageId="35" pageNumber="36">
<taxonomicNameLabel id="03DFCD329F3AE306076EF919FC232F80" box="[799,907,1724,1749]" pageId="35" pageNumber="36" rank="genus">gen. nov.</taxonomicNameLabel>
</emphasis>
Both sulci of
<taxonomicName id="ED98D7D89F3AE3060046F919FB072F80" authorityName="Iredale" authorityYear="1924" box="[1079,1199,1724,1749]" class="Bivalvia" family="Thyasiridae" genus="Mendicula" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE3060046F919FB072F80" box="[1079,1199,1724,1749]" italics="true" pageId="35" pageNumber="36">Mendicula</emphasis>
</taxonomicName>
are shallow and the ligament is entirely internal (
<bibRefCitation id="4E09D1AA9F3AE3060591F97AFDDB2FAD" author="Zelaya, D. G." box="[480,627,1759,1784]" pageId="35" pageNumber="36" pagination="607 - 616" refId="ref43292" refString="Zelaya, D. G. (2010) The new species of Thyasira, Mendicula and Axinulus (Bivalvia; Thyasiroidea) from Sub-Antarctic and Antarctic waters. Polar Biology, 33, 607 - 616. http: // dx. doi. org / 10.1007 / s 00300 - 009 - 0736 - 9" type="journal article" year="2010">Zelaya 2010</bibRefCitation>
), also unlike in
<taxonomicName id="ED98D7D89F3AE306075BF945FC0C2FA2" authority="Hryniewicz &amp; Little &amp; Nakrem, 2014" authorityName="Hryniewicz &amp; Little &amp; Nakrem" authorityYear="2014" box="[810,932,1760,1783]" class="Bivalvia" family="Thyasiridae" genus="Cretaxinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Lucinida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus" status="gen. nov.">
<emphasis id="18EC70499F3AE306075BF945FC0C2FA2" box="[810,932,1760,1783]" italics="true" pageId="35" pageNumber="36">Cretaxinus</emphasis>
</taxonomicName>
<emphasis id="18EC70499F3AE30607DDF97AFBBF2FAD" bold="true" box="[940,1047,1759,1784]" pageId="35" pageNumber="36">
<taxonomicNameLabel id="03DFCD329F3AE30607DDF97AFBBF2FAD" box="[940,1047,1759,1784]" pageId="35" pageNumber="36" rank="genus">gen. nov.</taxonomicNameLabel>
</emphasis>
, which has weak sulci but largely external ligament.
<taxonomicName id="ED98D7D89F3AE306051DF8A1FD222E48" authority="Berry, 1947" authorityName="Berry" authorityYear="1947" box="[364,650,1796,1821]" class="Bivalvia" family="Thyasiridae" genus="Adontorhina" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE306051DF8A1FE512E48" box="[364,505,1796,1821]" italics="true" pageId="35" pageNumber="36">Adontorhina</emphasis>
<bibRefCitation id="4E09D1AA9F3AE3060673F8A1FD222E48" author="Berry, S. S." box="[514,650,1796,1821]" pageId="35" pageNumber="36" pagination="256 - 275" refId="ref29865" refString="Berry, S. S. (1947) New Mollusca from the Pleistocene of San Pedro, California - III. Bulletins of American Paleontology, 31, 256 - 275." type="journal article" year="1947">Berry, 1947</bibRefCitation>
</taxonomicName>
, apart from small, oval shells with an internal ligament, differs from
<taxonomicName id="ED98D7D89F3AE30604E6F88DFEB92E6A" authorityName="Hryniewicz &amp; Little &amp; Nakrem" authorityYear="2014" box="[151,273,1832,1855]" class="Bivalvia" family="Thyasiridae" genus="Cretaxinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Lucinida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE30604E6F88DFEB92E6A" box="[151,273,1832,1855]" italics="true" pageId="35" pageNumber="36">Cretaxinus</emphasis>
</taxonomicName>
by characteristic granules on the hinge plate of the former (
<bibRefCitation id="4E09D1AA9F3AE30607BDF882FBE32E15" author="Scott, P. H." box="[972,1099,1831,1856]" pageId="35" pageNumber="36" pagination="149 - 156" refId="ref39890" refString="Scott, P. H. (1986) A new species of Adontorhina (Bivalvia: Thyasiridae) from the Northeast Pacific, with notes of Adotorhina cyclia Berry, 1947. The Veliger, 29, 149 - 156." type="journal article" year="1986">Scott 1986</bibRefCitation>
;
<bibRefCitation id="4E09D1AA9F3AE306002BF88DFA392E15" author="Barry, P. J. &amp; McCormick, G. P." box="[1114,1425,1831,1856]" pageId="35" pageNumber="36" pagination="37 - 49" refId="ref29758" refString="Barry, P. J. &amp; McCormick, G. P. (2007) Two new species of Adontorhina Berry, 1947 (Bivalvia: Thyasiridae) from the Porcupine Bank, off the west coast of Ireland. Zootaxa, 1526, 37 - 49." type="journal article" year="2007">Barry &amp; McCormick 2007</bibRefCitation>
).
<taxonomicName id="ED98D7D89F3AE30604E6F8E9FE452E30" authority="Verrill &amp; Bush, 1898" authorityName="Verrill &amp; Bush" authorityYear="1898" box="[151,493,1868,1893]" class="Bivalvia" family="Thyasiridae" genus="Axinulus" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3AE30604E6F8E9FF512E30" box="[151,249,1868,1893]" italics="true" pageId="35" pageNumber="36">Axinulus</emphasis>
<bibRefCitation id="4E09D1AA9F3AE306048EF8E9FE452E30" author="Verrill, A. E. &amp; Bush, K. J." box="[255,493,1868,1893]" pageId="35" pageNumber="36" pagination="775 - 901" refId="ref41850" refString="Verrill, A. E. &amp; Bush, K. J. (1898) Revision of the deep water Mollusca of the Atlantic Coast of North America, with description of new genera and species, Pt. 1, Bivalvia. Proceedings of the United States National Museum, 20, 775 - 901, pls. 71 - 97." type="journal article" year="1898">Verrill &amp; Bush, 1898</bibRefCitation>
</taxonomicName>
, has a small oval shell which is higher than long (
<bibRefCitation id="4E09D1AA9F3AE3060067F8E9FB562E30" author="Payne, C. M. &amp; Allen, J. A." box="[1046,1278,1868,1893]" pageId="35" pageNumber="36" pagination="481 - 562" refId="ref38443" refString="Payne, C. M. &amp; Allen, J. A. (1991) The morphology of deep-sea Thyasiridae (Mollusca: Bivalvia) from the Atlantic Ocean. Philosophical Transactions: Biological Sciences, 334, 481 - 562. http: // dx. doi. org / 10.1098 / rstb. 1991.0128" type="journal article" year="1991">Payne &amp; Allen 1991</bibRefCitation>
) and a largely internal ligament, also unlike
<taxonomicName id="ED98D7D89F3AE3060595F8D5FDF62ED2" authority="Hryniewicz &amp; Little &amp; Nakrem, 2014" authorityName="Hryniewicz &amp; Little &amp; Nakrem" authorityYear="2014" box="[484,606,1904,1927]" class="Bivalvia" family="Thyasiridae" genus="Cretaxinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Lucinida" pageId="35" pageNumber="36" phylum="Mollusca" rank="genus" status="gen. nov.">
<emphasis id="18EC70499F3AE3060595F8D5FDF62ED2" box="[484,606,1904,1927]" italics="true" pageId="35" pageNumber="36">Cretaxinus</emphasis>
</taxonomicName>
<emphasis id="18EC70499F3AE3060614F8CAFD662EDD" bold="true" box="[613,718,1903,1928]" pageId="35" pageNumber="36">
<taxonomicNameLabel id="03DFCD329F3AE3060614F8CAFD662EDD" box="[613,718,1903,1928]" pageId="35" pageNumber="36" rank="genus">gen. nov.</taxonomicNameLabel>
</emphasis>
</paragraph>
<paragraph id="2A27AC5B9F3AE30104B4F831FC592848" blockId="35.[151,1437,1615,2037]" lastBlockId="36.[151,1437,151,285]" lastPageId="36" lastPageNumber="37" pageId="35" pageNumber="36">
The current lack of taxonomically robust characters in the shells of the
<taxonomicName id="ED98D7D89F3AE306006BF831FB362EF8" authorityName="Dall" authorityYear="1901" box="[1050,1182,1940,1965]" class="Bivalvia" family="Thyasiridae" kingdom="Animalia" order="Lucinoida" pageId="35" pageNumber="36" phylum="Mollusca" rank="family">Thyasiridae</taxonomicName>
leads to problems of generic separation within the family (e.g.
<bibRefCitation id="4E09D1AA9F3AE3060606F81DFCCD2E85" author="Payne, C. M. &amp; Allen, J. A." box="[631,869,1975,2000]" pageId="35" pageNumber="36" pagination="481 - 562" refId="ref38443" refString="Payne, C. M. &amp; Allen, J. A. (1991) The morphology of deep-sea Thyasiridae (Mollusca: Bivalvia) from the Atlantic Ocean. Philosophical Transactions: Biological Sciences, 334, 481 - 562. http: // dx. doi. org / 10.1098 / rstb. 1991.0128" type="journal article" year="1991">Payne &amp; Allen 1991</bibRefCitation>
;
<bibRefCitation id="4E09D1AA9F3AE3060702F812FBD12E85" author="Oliver, G. P. &amp; Killeen, I. J." box="[883,1145,1975,2000]" pageId="35" pageNumber="36" pagination="1 - 73" refId="ref38007" refString="Oliver, G. P. &amp; Killeen, I. J. (2002) The Thyasiridae (Mollusca: Bivalvia) of the British continental shelf and North Sea oilfields. Biomor Reports, 3, 1 - 73." type="journal article" year="2002">Oliver &amp; Killeen 2002</bibRefCitation>
;
<bibRefCitation id="4E09D1AA9F3AE30600F6F812FA3F2E85" author="Oliver, G. P. &amp; Sellanes, J." box="[1159,1431,1975,2000]" pageId="35" pageNumber="36" pagination="1 - 20" refId="ref38186" refString="Oliver, G. P. &amp; Sellanes, J. (2005) New species of Thyasiridae from a methane seepage area off Concepcion, Chile. Zootaxa, 1092, 1 - 20." type="journal article" year="2005">Oliver &amp; Sellanes 2005</bibRefCitation>
;
<bibRefCitation id="4E09D1AA9F3AE30604E6F879FE0A2EA0" author="Oliver, G. P. &amp; Holmes, A. M." box="[151,418,2012,2037]" pageId="35" pageNumber="36" pagination="175 - 183" refId="ref37911" refString="Oliver, G. P. &amp; Holmes, A. M. (2006) New species of Thyasiridae (Bivalvia) from chemosynthetic communities in the Atlantic Ocean. Journal of Conchology, 39, 175 - 183." type="journal article" year="2006">Oliver &amp; Holmes 2006</bibRefCitation>
;
<bibRefCitation id="4E09D1AA9F3AE30605C1F879FD042EA0" author="Rodrigues, C. F. &amp; Oliver, G. P. &amp; Cunha, M. R." box="[432,684,2012,2037]" pageId="35" pageNumber="36" pagination="41 - 56" refId="ref39096" refString="Rodrigues, C. F., Oliver, G. P. &amp; Cunha, M. R. (2008) Thyasiroidea (Mollusca: Bivalvia) from the mud volcanoes of the Gulf of Cadiz. Zootaxa, 1752, 41 - 56." type="journal article" year="2008">
Rodrigues
<emphasis id="18EC70499F3AE306065DF878FDCE2EA0" box="[556,614,2012,2037]" italics="true" pageId="35" pageNumber="36">et al.</emphasis>
2008
</bibRefCitation>
). Molecular data suggest that current thyasirid generic definitions might be inadequate and additional morphological studies may result in redefinition of the genera (
<bibRefCitation id="4E09D1AA9F3DE301017CFF32FF7C2980" author="Taylor, J. D. &amp; Williams, S. T. &amp; Glover, E. A." pageId="36" pageNumber="37" pagination="565 - 574" refId="ref41350" refString="Taylor, J. D., Williams, S. T. &amp; Glover, E. A. (2007) Evolutionary relationships of the bivalve family Thyasiridae (Mollusca: Bivalvia), monophyly and superfamily status. Journal of the Marine Biological Association of the United Kingdom, 87, 565 - 574. http: // dx. doi. org / 10.1017 / s 0025315407054409" type="journal article" year="2007">
Taylor
<emphasis id="18EC70499F3DE3010110FF3CFA3429E5" box="[1377,1436,151,176]" italics="true" pageId="36" pageNumber="37">et al.</emphasis>
2007
</bibRefCitation>
). Further, the same data show only a weak separation between larger, chemosymbiotic thyasirids and small (&lt;
<quantity id="ED6001BE9F3DE30104DEFF7AFEAB29AD" box="[175,259,223,248]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="36" pageNumber="37" unit="mm" value="10.0">10 mm</quantity>
) thyasirid genera without symbionts, like
<taxonomicName id="ED98D7D89F3DE3010681FF7AFBA329AD" authority="Iredale, 1924" authorityName="Iredale" authorityYear="1924" box="[752,1035,223,248]" class="Bivalvia" family="Thyasiridae" genus="Mendicula" kingdom="Animalia" order="Lucinoida" pageId="36" pageNumber="37" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3DE3010681FF7AFCC029AD" box="[752,872,223,248]" italics="true" pageId="36" pageNumber="37">Mendicula</emphasis>
<bibRefCitation id="4E09D1AA9F3DE3010703FF7AFBA329AD" author="Iredale, T." box="[882,1035,223,248]" pageId="36" pageNumber="37" pagination="179 - 278" refId="ref34514" refString="Iredale, T. (1924) Results from Roy Bell's Molluscan collections. Proceedings of the Linnean Society of New South Wales, 49, 179 - 278." type="journal article" year="1924">Iredale, 1924</bibRefCitation>
</taxonomicName>
,
<taxonomicName id="ED98D7D89F3DE301006AFF45FA3029AD" authority="Verrill &amp; Bush, 1898" authorityName="Verrill &amp; Bush" authorityYear="1898" box="[1051,1432,223,248]" class="Bivalvia" family="Thyasiridae" genus="Leptaxinus" kingdom="Animalia" order="Lucinoida" pageId="36" pageNumber="37" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3DE301006AFF45FB3E29A2" box="[1051,1174,224,247]" italics="true" pageId="36" pageNumber="37">Leptaxinus</emphasis>
<bibRefCitation id="4E09D1AA9F3DE30100D1FF7AFA3029AD" author="Verrill, A. E. &amp; Bush, K. J." box="[1184,1432,223,248]" pageId="36" pageNumber="37" pagination="775 - 901" refId="ref41850" refString="Verrill, A. E. &amp; Bush, K. J. (1898) Revision of the deep water Mollusca of the Atlantic Coast of North America, with description of new genera and species, Pt. 1, Bivalvia. Proceedings of the United States National Museum, 20, 775 - 901, pls. 71 - 97." type="journal article" year="1898">Verrill &amp; Bush, 1898</bibRefCitation>
</taxonomicName>
,
<taxonomicName id="ED98D7D89F3DE30104E6FEA1FE1A2848" authority="Berry, 1947" authorityName="Berry" authorityYear="1947" box="[151,434,260,285]" class="Bivalvia" family="Thyasiridae" genus="Adontorhina" kingdom="Animalia" order="Lucinoida" pageId="36" pageNumber="37" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3DE30104E6FEA1FE8C2848" box="[151,292,260,285]" italics="true" pageId="36" pageNumber="37">Adontorhina</emphasis>
<bibRefCitation id="4E09D1AA9F3DE301055AFEA1FE1A2848" author="Berry, S. S." box="[299,434,260,285]" pageId="36" pageNumber="37" pagination="256 - 275" refId="ref29865" refString="Berry, S. S. (1947) New Mollusca from the Pleistocene of San Pedro, California - III. Bulletins of American Paleontology, 31, 256 - 275." type="journal article" year="1947">Berry, 1947</bibRefCitation>
</taxonomicName>
, and
<taxonomicName id="ED98D7D89F3DE301059DFEA1FC452848" authority="Verrill &amp; Bush, 1898" authorityName="Verrill &amp; Bush" authorityYear="1898" box="[492,1005,260,285]" class="Bivalvia" family="Thyasiridae" genus="Axinulus" kingdom="Animalia" order="Lucinoida" pageId="36" pageNumber="37" phylum="Mollusca" rank="genus">
<emphasis id="18EC70499F3DE301059DFEA1FDE62848" box="[492,590,260,285]" italics="true" pageId="36" pageNumber="37">Axinulus</emphasis>
<bibRefCitation id="4E09D1AA9F3DE3010624FEA1FCE82848" author="Verrill, A. E. &amp; Bush, K. J." box="[597,832,260,285]" pageId="36" pageNumber="37" pagination="775 - 901" refId="ref41850" refString="Verrill, A. E. &amp; Bush, K. J. (1898) Revision of the deep water Mollusca of the Atlantic Coast of North America, with description of new genera and species, Pt. 1, Bivalvia. Proceedings of the United States National Museum, 20, 775 - 901, pls. 71 - 97." type="journal article" year="1898">Verrill &amp; Bush, 1898</bibRefCitation>
(
<bibRefCitation id="4E09D1AA9F3DE301073FFEA1FC4D2848" author="Dufour, S." box="[846,997,260,285]" pageId="36" pageNumber="37" pagination="200 - 212" refId="ref31928" refString="Dufour, S. (2005) Gill anatomy and the evolution of symbiosis in bivalve family Thyasiridae. Biological Bulletin, 208, 200 - 212. http: // dx. doi. org / 10.2307 / 3593152" type="journal article" year="2005">Dufour 2005</bibRefCitation>
)
</taxonomicName>
.
</paragraph>
</subSubSection>
</treatment>
</document>