255 lines
31 KiB
XML
255 lines
31 KiB
XML
<document id="FDA6B7909441A6E7E0DAED3307D19FDC" ID-CLB-Dataset="2884" ID-DOI="10.5852/ejt.2021.783.1601" ID-GBIF-Dataset="aa9de9bf-dea4-4321-a51d-6c4f1f55032d" ID-ISSN="2118-9773" ID-Zenodo-Dep="5793422" ID-ZooBank="071EAD63-05ED-4D6C-AC45-8719E6D79E0B" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1640009482758" checkinUser="felipe" docAuthor="Kröger, Björn & Pohle, Alexander" docDate="2021" docId="5F4487ACFF83FF9FFDB37E1CFAA97BB0" docLanguage="en" docName="ejt-783_1-102.pdf" docOrigin="European Journal of Taxonomy 783 (1)" docSource="http://dx.doi.org/10.5852/ejt.2021.783.1601" docStyle="DocumentStyle:EF2B578F1D15862ADE45B0C07C620911.14:EJT.2018-.journal_article.type1" docStyleId="EF2B578F1D15862ADE45B0C07C620911" docStyleName="EJT.2018-.journal_article.type1" docStyleVersion="14" docTitle="Hemicoanella occulta Kröger & Pohle 2021, sp. nov." docType="treatment" docVersion="9" lastPageNumber="49" masterDocId="A37DFFD4FFACFFAEFFD67F14FFDE7A64" masterDocTitle="Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities" masterLastPageNumber="102" masterPageNumber="1" pageNumber="48" updateTime="1701997144043" updateUser="plazi" zenodo-license-document="CC-BY-4.0" zenodo-license-figures="CC-BY-4.0" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="6BB1A73CF47DA465B1AD4E5DD74EEA95">Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities</mods:title>
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<mods:name id="A3684848F2484DC9192B9E6A4BDCFF8D" type="personal">
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<mods:namePart id="14CADFB2AC452714262842E891859682">Kröger, Björn</mods:namePart>
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<mods:affiliation id="C6F70DD7EA4446C6806DC1E683F4293B">Finnish Museum of Natural History, University of Helsinki, PO Box 44, FI- 00014 Helsinki, Finland.</mods:affiliation>
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<mods:nameIdentifier id="E6DC26E4B1FB5C159767ADCD12B3FCAD" type="email">bjorn.kroger@helsinki.fi</mods:nameIdentifier>
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<mods:namePart id="1491CBF96859E4CF109D7B5F6EA29581">Pohle, Alexander</mods:namePart>
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<mods:affiliation id="6245F630814237205FACB20EE231D994">Paläontologisches Institut und Museum, University of Zurich, Zurich, Switzerland.</mods:affiliation>
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<mods:nameIdentifier id="7326D2BDE1B3EAC61FC6F6565FCF7A35" type="email">alexander.pohle@pim.uzh.ch</mods:nameIdentifier>
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<mods:title id="C5E61A2C9AD8DF879644295003B4925B">European Journal of Taxonomy</mods:title>
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<mods:date id="873FE2647233CB249A88C8E21E5A8F24">2021</mods:date>
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<treatment id="5F4487ACFF83FF9FFDB37E1CFAA97BB0" ID-DOI="http://doi.org/10.5281/zenodo.5794309" ID-GBIF-Taxon="191693652" ID-Zenodo-Dep="5794309" LSID="urn:lsid:plazi:treatment:5F4487ACFF83FF9FFDB37E1CFAA97BB0" httpUri="http://treatment.plazi.org/id/5F4487ACFF83FF9FFDB37E1CFAA97BB0" lastPageId="49" lastPageNumber="49" pageId="47" pageNumber="48">
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<subSubSection id="9FF76531FF83FF81FDB37E1CFC117B47" box="[613,975,264,291]" pageId="47" pageNumber="48" type="nomenclature">
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<paragraph id="D75236BAFF83FF81FDB37E1CFC117B47" blockId="47.[377,1210,264,361]" box="[613,975,264,291]" pageId="47" pageNumber="48">
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<heading id="8C1A81D6FF83FF81FDB37E1CFC117B47" box="[613,975,264,291]" centered="true" fontSize="11" level="2" pageId="47" pageNumber="48" reason="2">
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<taxonomicName id="10ED4D39FF83FF81FDB37E1CFCB37B47" authority="Kröger & Pohle, 2021" authorityName="Kröger & Pohle" authorityYear="2021" box="[613,877,264,291]" class="Cephalopoda" family="Protocycloceratidae" genus="Hemicoanella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tetrabranchia" pageId="47" pageNumber="48" phylum="Mollusca" rank="species" species="occulta" status="sp. nov.">
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<emphasis id="E599EAA8FF83FF81FDB37E1CFCB37B47" bold="true" box="[613,877,264,291]" italics="true" pageId="47" pageNumber="48">Hemicoanella occulta</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="FEAA57D3FF83FF81FCA37E1DFC117B47" box="[885,975,265,291]" pageId="47" pageNumber="48" rank="species">sp. nov.</taxonomicNameLabel>
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</heading>
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</paragraph>
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</subSubSection>
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<subSubSection id="9FF76531FF83FF81FEAF7E38FC5E7B0D" pageId="47" pageNumber="48" type="description">
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<paragraph id="D75236BAFF83FF81FEAF7E38FB647B23" blockId="47.[377,1210,264,361]" box="[377,1210,300,327]" pageId="47" pageNumber="48">
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<uri id="A37C3AB8FF83FF81FEAF7E38FB647B23" box="[377,1210,300,327]" pageId="47" pageNumber="48">
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urn:lsid:zoobank.org:act:
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<uuid id="A34B0C6FFF83FF81FD4E7E38FB647B23" box="[664,1210,300,327]" pageId="47" pageNumber="48">F8F91097-8EF4-454F-8317-F4AA1A270616</uuid>
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</uri>
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</paragraph>
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<paragraph id="D75236BAFF83FF81FD657E5BFC5E7B0D" blockId="47.[377,1210,264,361]" box="[691,896,335,361]" pageId="47" pageNumber="48">
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<figureCitation id="4FD62A3FFF83FF81FD657E5BFCFE7B0D" box="[691,800,335,361]" captionStart="Fig" captionStartId="47.[189,232,1810,1836]" captionTargetBox="[229,1398,1276,1756]" captionTargetId="figure-198@47.[189,1398,1274,1773]" captionTargetPageId="47" captionText="Fig. 32. Reconstruction and interpretation of details of connecting ring and septal necks in orthoconic cephalopods from the Olenidsletta Member, Floian, Ordovician, Profilstranda section, Ny Friesland, Spitsbergen. A. Catoraphiceras sp., FMNH-P30425, dorsal side of the connecting ring, see Fig. 10A. B. Cyptendoceratid gen. et sp. indet., FMNH-P30431, see Fig. 31B. C. Hemichoanella occulta sp. nov., FMNH-P30420, from bed PO 131, dorsal side of the connecting ring, see Fig. 36B. Black: septal neck and septum. Dark grey: connecting ring. Without scale." figureDoi="http://doi.org/10.5281/zenodo.5793522" httpUri="https://zenodo.org/record/5793522/files/figure.png" pageId="47" pageNumber="48">Figs 32C</figureCitation>
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,
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<figureCitation id="4FD62A3FFF83FF81FCFA7E5BFC5E7B0D" box="[812,896,335,361]" captionStart="Fig" captionStartId="48.[190,233,1852,1878]" captionTargetBox="[206,1390,738,1813]" captionTargetId="figure-156@48.[189,1398,738,1813]" captionTargetPageId="48" captionText="Fig. 33. Median sections of phragmocones. A–B. Hemichoanella occulta sp. nov., from bed PO 131. C–E. Eosomichelinoceras borealis sp. nov., from bed PO 123.3, Olenidsletta Member, Floian, Ordovician, Profilstranda section, Ny Friesland, Spitsbergen. A–B. Specimen FMNH-P30420, holotype. C. Specimen FMNH-P30305. D. Specimen FMNH-30288. E. Specimen FMNH-30284. Scale bars: A–B, E = 5 mm; C–D = 1 mm." figureDoi="http://doi.org/10.5281/zenodo.5793524" httpUri="https://zenodo.org/record/5793524/files/figure.png" pageId="47" pageNumber="48">33A–B</figureCitation>
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</paragraph>
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||
</subSubSection>
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<subSubSection id="9FF76531FF83FF81FF6B7E84FB607844" pageId="47" pageNumber="48" type="diagnosis">
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<paragraph id="D75236BAFF83FF81FF6B7E84FEE87BCE" blockId="47.[189,310,400,426]" box="[189,310,400,426]" pageId="47" pageNumber="48">
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<heading id="8C1A81D6FF83FF81FF6B7E84FEE87BCE" bold="true" box="[189,310,400,426]" fontSize="11" level="3" pageId="47" pageNumber="48" reason="3">
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<emphasis id="E599EAA8FF83FF81FF6B7E84FEE87BCE" bold="true" box="[189,310,400,426]" pageId="47" pageNumber="48">Diagnosis</emphasis>
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</heading>
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</paragraph>
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<paragraph id="D75236BAFF83FF81FF6B7EABFB607844" blockId="47.[189,1400,447,545]" pageId="47" pageNumber="48">
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<taxonomicName id="10ED4D39FF83FF81FF6B7EABFEAE7BBD" authorityName="Teichert & Glenister" authorityYear="1954" box="[189,368,447,473]" class="Cephalopoda" family="Ellesmeroceratidae" genus="Hemichoanella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tetrabranchia" pageId="47" pageNumber="48" phylum="Mollusca" rank="genus">
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<emphasis id="E599EAA8FF83FF81FF6B7EABFEAE7BBD" box="[189,368,447,473]" italics="true" pageId="47" pageNumber="48">Hemichoanella</emphasis>
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</taxonomicName>
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with ca three directly transverse annulations at distance similar to conch diameter and ornamented additionally with finely transverse striae; conch cross section circular; angle of expansion ca 5°; relatively wide marginal siphuncle with rSD of 0.36; septal necks hemichoanitic.
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</paragraph>
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</subSubSection>
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||
<subSubSection id="9FF76531FF83FF81FF6B7D53FB2B78F4" box="[189,1269,583,656]" pageId="47" pageNumber="48" type="etymology">
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<paragraph id="D75236BAFF83FF81FF6B7D53FE9A7805" blockId="47.[189,324,583,609]" box="[189,324,583,609]" pageId="47" pageNumber="48">
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<heading id="8C1A81D6FF83FF81FF6B7D53FE9A7805" bold="true" box="[189,324,583,609]" fontSize="11" level="3" pageId="47" pageNumber="48" reason="3">
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||
<emphasis id="E599EAA8FF83FF81FF6B7D53FE9A7805" bold="true" box="[189,324,583,609]" pageId="47" pageNumber="48">Etymology</emphasis>
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</heading>
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</paragraph>
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<paragraph id="D75236BAFF83FF81FF6B7D62FB2B78F4" blockId="47.[189,1269,630,656]" box="[189,1269,630,656]" pageId="47" pageNumber="48">
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||
From ‘hidden’, in Latin ‘
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<emphasis id="E599EAA8FF83FF81FE357D62FD9B78F4" box="[483,581,630,656]" italics="true" pageId="47" pageNumber="48">occultus</emphasis>
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’, because of its
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<taxonomicName id="10ED4D39FF83FF81FCD27D62FC6278F4" authorityName="Ulrich & Foerste" authorityYear="1936" box="[772,956,630,656]" class="Cephalopoda" family="Cyptendoceratidae" genus="Catoraphiceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tetrabranchia" pageId="47" pageNumber="48" phylum="Mollusca" rank="genus">
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<emphasis id="E599EAA8FF83FF81FCD27D62FC6278F4" box="[772,956,630,656]" italics="true" pageId="47" pageNumber="48">Catoraphiceras</emphasis>
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</taxonomicName>
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-like external morphology.
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</paragraph>
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</subSubSection>
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<subSubSection id="9FF76531FF83FF81FF6B7DA3FB9579D2" pageId="47" pageNumber="48" type="materials_examined">
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<paragraph id="D75236BAFF83FF81FF6B7DA3FEB278B5" blockId="47.[189,364,695,721]" box="[189,364,695,721]" pageId="47" pageNumber="48">
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<heading id="8C1A81D6FF83FF81FF6B7DA3FEB278B5" bold="true" box="[189,364,695,721]" fontSize="11" level="3" pageId="47" pageNumber="48" reason="3">
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<emphasis id="E599EAA8FF83FF81FF6B7DA3FEB278B5" bold="true" box="[189,364,695,721]" pageId="47" pageNumber="48">Type material</emphasis>
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</heading>
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</paragraph>
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<paragraph id="D75236BAFF83FF81FF3C7DF2FD7F7947" blockId="47.[189,673,742,803]" pageId="47" pageNumber="48">
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<materialsCitation id="67853CE7FF83FF81FF3C7DF2FD7F7947" ID-GBIF-Occurrence="3421082307" collectionCode="FMNH-P" pageId="47" pageNumber="48" specimenCode="FMNH-P30420" specimenCount="1" typeStatus="holotype">
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<emphasis id="E599EAA8FF83FF81FF3C7DF2FE827964" bold="true" box="[234,348,742,768]" pageId="47" pageNumber="48">
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<typeStatus id="08568818FF83FF81FF3C7DF2FE827964" box="[234,348,742,768]" pageId="47" pageNumber="48" type="holotype">Holotype</typeStatus>
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</emphasis>
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<specimenCount id="C1EBFD33FF83FF81FF6B7C1DFEEF7947" box="[189,305,777,803]" pageId="47" pageNumber="48" type="generic">Specimen</specimenCount>
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<specimenCode id="874B9EC1FF83FF81FEEE7C1DFE2A7947" box="[312,500,777,803]" collectionCode="FMNH-P" pageId="47" pageNumber="48">FMNH-P30420</specimenCode>
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; by monotypy.
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</materialsCitation>
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</paragraph>
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<paragraph id="D75236BAFF83FF81FF6B7C5EFE257900" blockId="47.[189,507,842,868]" box="[189,507,842,868]" pageId="47" pageNumber="48">
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<emphasis id="E599EAA8FF83FF81FF6B7C5EFE257900" bold="true" box="[189,507,842,868]" pageId="47" pageNumber="48">Type locality and horizon</emphasis>
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</heading>
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</paragraph>
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<paragraph id="D75236BAFF83FF81FF6B7C6DFB9579D2" blockId="47.[189,1399,889,951]" pageId="47" pageNumber="48">
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||
From Profilstranda section, adjacent Hinlopenstretet, Ny
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||
<collectingRegion id="1529F858FF83FF81FCBA7C6DFC0279F7" box="[876,988,889,915]" country="Netherlands" name="Fryslan" pageId="47" pageNumber="48">Friesland</collectingRegion>
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, Spitsbergen; bed
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||
<collectionCode id="B1FCAE7FFF83FF81FB6A7C6DFB3F79F7" box="[1212,1249,889,915]" country="Russia" name="Collection of the Zoological Institute of the Russian Academy of Sciences" pageId="47" pageNumber="48">PO</collectionCode>
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<quantity id="10159B5FFF83FF81FB3A7C6DFAA979F7" box="[1260,1399,889,915]" metricMagnitude="5" metricUnit="m" metricValue="1.3112799999999998" pageId="47" pageNumber="48" unit="m" value="131128.0">131, 128 m</quantity>
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||
above base of Olenidsletta Member,
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||
<collectionCode id="B1FCAE7FFF83FF81FDBD7C88FD5F79D2" box="[619,641,924,950]" country="Canada" lsid="urn:lsid:biocol.org:col:13946" name="Royal British Columbia Museum - Herbarium" pageId="47" pageNumber="48" type="Museum">V</collectionCode>
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||
2b trilobite zone, Blackhillsian, Floian.
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||
</paragraph>
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||
</subSubSection>
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<subSubSection id="9FF76531FF83FF9EFF6B7CC9FD307BD4" lastPageId="48" lastPageNumber="49" pageId="47" pageNumber="48" type="description">
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<paragraph id="D75236BAFF83FF81FF6B7CC9FE907993" blockId="47.[189,334,989,1015]" box="[189,334,989,1015]" pageId="47" pageNumber="48">
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<emphasis id="E599EAA8FF83FF81FF6B7CC9FE907993" bold="true" box="[189,334,989,1015]" pageId="47" pageNumber="48">Description</emphasis>
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</heading>
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</paragraph>
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<paragraph id="D75236BAFF83FF9EFF6B7B18FD307BD4" blockId="47.[188,1399,1036,1203]" lastBlockId="48.[188,1399,265,432]" lastPageId="48" lastPageNumber="49" pageId="47" pageNumber="48">
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The
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||
<typeStatus id="08568818FF83FF81FF227B18FE857E42" box="[244,347,1036,1062]" pageId="47" pageNumber="48" type="holotype">holotype</typeStatus>
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is a ca
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<quantity id="10159B5FFF83FF81FE6B7B18FDCC7E43" box="[445,530,1036,1063]" metricMagnitude="-2" metricUnit="m" metricValue="1.7" pageId="47" pageNumber="48" unit="mm" value="17.0">17 mm</quantity>
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||
long fragment of a phragmocone with a slightly compressed or circular conch cross section with a conch height of
|
||
<quantity id="10159B5FFF83FF81FD797B3BFCF87E2E" box="[687,806,1071,1098]" metricMagnitude="-3" metricUnit="m" metricValue="7.7" metricValueMax="8.4" metricValueMin="7.0" pageId="47" pageNumber="48" unit="mm" value="7.7" valueMax="8.4" valueMin="7.0">7–8.4 mm</quantity>
|
||
(angle of expansion ca 5°). The conch is annulated with ca three directly transverse annulations at a distance similar to the corresponding conch cross section. Additionally, it is ornamented with ca 10 fine striae that run parallel to the annuli. The sutures are directly transverse at the flanks and at the antisiphuncular side and are not exposed at the prosiphuncular side. The chambers have a distance of ca
|
||
<quantity id="10159B5FFF9CFF9EFD607E1DFC987B47" box="[694,838,265,292]" metricMagnitude="-3" metricUnit="m" metricValue="2.3" metricValueMax="2.5" metricValueMin="2.1" pageId="48" pageNumber="49" unit="mm" value="2.3" valueMax="2.5" valueMin="2.1">2.1–2.5 mm</quantity>
|
||
(3–4 chambers per corresponding conch cross section). The septal position does not correspond with the position of the annuli, some septa occur in the valleys, others in the rings of the annuli. The siphuncle is marginal and relatively large with a diameter of ca
|
||
<quantity id="10159B5FFF9CFF9EFED77E67FE987BE9" box="[257,326,371,397]" metricMagnitude="-3" metricUnit="m" metricValue="3.0" pageId="48" pageNumber="49" unit="mm" value="3.0">3 mm</quantity>
|
||
at the adoral end of the specimen (rSD = 0.36). The connecting ring is not preserved. The septal necks are hemichoanitic,
|
||
<quantity id="10159B5FFF9CFF9EFDE27E82FD757BD4" box="[564,683,406,432]" metricMagnitude="-4" metricUnit="m" metricValue="8.0" metricValueMax="10.0" metricValueMin="6.0" pageId="48" pageNumber="49" unit="mm" value="0.8" valueMax="1.0" valueMin="0.6">0.6–1 mm</quantity>
|
||
long.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<caption id="83926632FF83FF81FF6B7806FC987DB9" ID-DOI="http://doi.org/10.5281/zenodo.5793522" ID-Zenodo-Dep="5793522" httpUri="https://zenodo.org/record/5793522/files/figure.png" pageId="47" pageNumber="48" startId="47.[189,232,1810,1836]" targetBox="[229,1398,1276,1756]" targetPageId="47">
|
||
<paragraph id="D75236BAFF83FF81FF6B7806FC987DB9" blockId="47.[188,1399,1810,2013]" pageId="47" pageNumber="48">
|
||
<emphasis id="E599EAA8FF83FF81FF6B7806FEC27D49" bold="true" box="[189,284,1810,1837]" pageId="47" pageNumber="48">Fig. 32.</emphasis>
|
||
Reconstruction and interpretation of details of connecting ring and septal necks in orthoconic cephalopods from the Olenidsletta Member, Floian, Ordovician, Profilstranda section, Ny Friesland, Spitsbergen.
|
||
<emphasis id="E599EAA8FF83FF81FE81784DFEB27D17" bold="true" box="[343,364,1881,1907]" pageId="47" pageNumber="48">A</emphasis>
|
||
.
|
||
<taxonomicName id="10ED4D39FF83FF81FEAA784DFDBF7D10" box="[380,609,1881,1908]" class="Cephalopoda" family="Cyptendoceratidae" genus="Catoraphiceras" kingdom="Animalia" order="Tetrabranchia" pageId="47" pageNumber="48" phylum="Mollusca" rank="species" species="undetermined">
|
||
<emphasis id="E599EAA8FF83FF81FEAA784DFDEA7D17" box="[380,564,1881,1907]" italics="true" pageId="47" pageNumber="48">Catoraphiceras</emphasis>
|
||
sp.
|
||
</taxonomicName>
|
||
, FMNH-P30425, dorsal side of the connecting ring, see Fig. 10A.
|
||
<emphasis id="E599EAA8FF83FF81FF697868FF0F7DF2" bold="true" box="[191,209,1916,1942]" pageId="47" pageNumber="48">B</emphasis>
|
||
. Cyptendoceratid gen. et sp. indet., FMNH-P30431, see Fig. 31B.
|
||
<emphasis id="E599EAA8FF83FF81FC0C7868FC317DF2" bold="true" box="[986,1007,1916,1942]" pageId="47" pageNumber="48">C</emphasis>
|
||
.
|
||
<taxonomicName id="10ED4D39FF83FF81FC287868FAD07DF2" authority="Kröger & Pohle, 2021" authorityName="Kröger & Pohle" authorityYear="2021" box="[1022,1294,1916,1942]" class="Cephalopoda" family="Ellesmeroceratidae" genus="Hemichoanella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tetrabranchia" pageId="47" pageNumber="48" phylum="Mollusca" rank="species" species="occulta" status="sp. nov.">
|
||
<emphasis id="E599EAA8FF83FF81FC287868FAD07DF2" box="[1022,1294,1916,1942]" italics="true" pageId="47" pageNumber="48">Hemichoanella occulta</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="FEAA57D3FF83FF81FAC37869FAAC7DF3" box="[1301,1394,1917,1943]" pageId="47" pageNumber="48" rank="species">sp. nov.</taxonomicNameLabel>
|
||
, FMNH-P30420, from bed PO 131, dorsal side of the connecting ring, see Fig. 36B. Black: septal neck and septum. Dark grey: connecting ring. Without scale.
|
||
</paragraph>
|
||
</caption>
|
||
<subSubSection id="9FF76531FF9CFF9FFF6B7EC3FAA97BB0" lastPageId="49" lastPageNumber="50" pageId="48" pageNumber="49" type="discussion">
|
||
<paragraph id="D75236BAFF9CFF9EFF6B7EC3FEF17B95" blockId="48.[189,303,471,497]" box="[189,303,471,497]" pageId="48" pageNumber="49">
|
||
<heading id="8C1A81D6FF9CFF9EFF6B7EC3FEF17B95" bold="true" box="[189,303,471,497]" fontSize="11" level="3" pageId="48" pageNumber="49" reason="3">
|
||
<emphasis id="E599EAA8FF9CFF9EFF6B7EC3FEF17B95" bold="true" box="[189,303,471,497]" pageId="48" pageNumber="49">Remarks</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph id="D75236BAFF9CFF9FFF6B7D12FAA97BB0" blockId="48.[188,1399,518,650]" lastBlockId="49.[187,1401,265,468]" lastPageId="49" lastPageNumber="50" pageId="48" pageNumber="49">
|
||
The internal characters of this species are similar to those of
|
||
<taxonomicName id="10ED4D39FF9CFF9EFC4B7D13FAAF7845" authority="Teichert & Glenister, 1954" authorityName="Teichert & Glenister" authorityYear="1954" box="[925,1393,518,545]" class="Cephalopoda" family="Ellesmeroceratidae" genus="Hemichoanella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tetrabranchia" pageId="48" pageNumber="49" phylum="Mollusca" rank="species" species="canningi">
|
||
<emphasis id="E599EAA8FF9CFF9EFC4B7D13FBF47844" box="[925,1066,519,544]" italics="true" pageId="48" pageNumber="49">H. canningi</emphasis>
|
||
<bibRefCitation id="B37C4B4BFF9CFF9EFBE67D12FAAF7845" author="Teichert C. & Glenister B. F." box="[1072,1393,518,545]" pageId="48" pageNumber="49" pagination="7 - 112" refId="ref50187" refString="Teichert C. & Glenister B. F. 1954. Early Ordovician cephalopod fauna from northwestern Australia. Bulletins of American Paleontology 35: 7 - 112." type="journal article" year="1954">Teichert & Glenister, 1954</bibRefCitation>
|
||
</taxonomicName>
|
||
, hitherto the only known species of
|
||
<taxonomicName id="10ED4D39FF9CFF9EFDB97D3DFCFC7827" authorityName="Teichert & Glenister" authorityYear="1954" box="[623,802,553,579]" class="Cephalopoda" family="Ellesmeroceratidae" genus="Hemichoanella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tetrabranchia" pageId="48" pageNumber="49" phylum="Mollusca" rank="genus">
|
||
<emphasis id="E599EAA8FF9CFF9EFDB97D3DFCFC7827" box="[623,802,553,579]" italics="true" pageId="48" pageNumber="49">Hemichoanella</emphasis>
|
||
</taxonomicName>
|
||
‚ which, however, has a smooth shell. Externally
|
||
<taxonomicName id="10ED4D39FF9CFF9EFF6B7D59FEE87802" authority="Kröger & Pohle, 2021" authorityName="Kröger & Pohle" authorityYear="2021" box="[189,310,588,614]" class="Cephalopoda" family="Ellesmeroceratidae" genus="Hemichoanella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tetrabranchia" pageId="48" pageNumber="49" phylum="Mollusca" rank="species" species="occulta" status="sp. nov.">
|
||
<emphasis id="E599EAA8FF9CFF9EFF6B7D59FEE87802" box="[189,310,588,614]" italics="true" pageId="48" pageNumber="49">H. occulta</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="FEAA57D3FF9CFF9EFEEA7D59FE4B7803" box="[316,405,589,615]" pageId="48" pageNumber="49" rank="species">sp. nov.</taxonomicNameLabel>
|
||
is similar to species of
|
||
<taxonomicName id="10ED4D39FF9CFF9EFD777D58FC877802" authorityName="Ulrich & Foerste" authorityYear="1936" box="[673,857,588,614]" class="Cephalopoda" family="Cyptendoceratidae" genus="Catoraphiceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tetrabranchia" pageId="48" pageNumber="49" phylum="Mollusca" rank="genus">
|
||
<emphasis id="E599EAA8FF9CFF9EFD777D58FC877802" box="[673,857,588,614]" italics="true" pageId="48" pageNumber="49">Catoraphiceras</emphasis>
|
||
</taxonomicName>
|
||
, which differ in having shorter, orthochoanitic septal necks.
|
||
<taxonomicName id="10ED4D39FF9CFF9EFE8A7D7BFC0278EE" authority="Teichert & Glenister, 1954" authorityName="Teichert & Glenister" authorityYear="1954" box="[348,988,623,650]" class="Cephalopoda" family="Protocycloceratidae" genus="Notocycloceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tetrabranchia" pageId="48" pageNumber="49" phylum="Mollusca" rank="species" species="yurabiense">
|
||
<emphasis id="E599EAA8FF9CFF9EFE8A7D7BFD4578ED" box="[348,667,623,649]" italics="true" pageId="48" pageNumber="49">Notocycloceras yurabiense</emphasis>
|
||
<bibRefCitation id="B37C4B4BFF9CFF9EFD747D7BFC0278EE" author="Teichert C. & Glenister B. F." box="[674,988,623,650]" pageId="48" pageNumber="49" pagination="7 - 112" refId="ref50187" refString="Teichert C. & Glenister B. F. 1954. Early Ordovician cephalopod fauna from northwestern Australia. Bulletins of American Paleontology 35: 7 - 112." type="journal article" year="1954">Teichert & Glenister, 1954</bibRefCitation>
|
||
</taxonomicName>
|
||
differs in having subholochoanitic septal necks.
|
||
<taxonomicName id="10ED4D39FF9DFF9FFEB77E1DFC197B40" authority="Teichert & Glenister, 1954" authorityName="Teichert & Glenister" authorityYear="1954" box="[353,967,265,292]" class="Cephalopoda" family="Proterocameroceratidae" genus="Anthoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Endocerida" pageId="49" pageNumber="50" phylum="Mollusca" rank="species" species="warburtoni">
|
||
<emphasis id="E599EAA8FF9DFF9FFEB77E1DFDA87B47" box="[353,630,265,291]" italics="true" pageId="49" pageNumber="50">Anthoceras warburtoni</emphasis>
|
||
<bibRefCitation id="B37C4B4BFF9DFF9FFD577E1DFC197B40" author="Teichert C. & Glenister B. F." box="[641,967,265,292]" pageId="49" pageNumber="50" pagination="7 - 112" refId="ref50187" refString="Teichert C. & Glenister B. F. 1954. Early Ordovician cephalopod fauna from northwestern Australia. Bulletins of American Paleontology 35: 7 - 112." type="journal article" year="1954">Teichert & Glenister, 1954</bibRefCitation>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="10ED4D39FF9DFF9FFC017E1DFF247B23" authority="Stait & Laurie, 1985" authorityName="Stait & Laurie" authorityYear="1985" class="Cephalopoda" family="Proterocameroceratidae" genus="Anthoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Endocerida" pageId="49" pageNumber="50" phylum="Mollusca" rank="species" species="arrowsmithense">
|
||
<emphasis id="E599EAA8FF9DFF9FFC017E1DFB6B7B47" box="[983,1205,265,291]" italics="true" pageId="49" pageNumber="50">A. arrowsmithense</emphasis>
|
||
Stait & Laurie, 1985
|
||
</taxonomicName>
|
||
, and
|
||
<taxonomicName id="10ED4D39FF9DFF9FFEE47E38FC767B23" authority="Teichert & Glenister, 1954" authorityName="Teichert & Glenister" authorityYear="1954" box="[306,936,300,327]" class="Cephalopoda" family="Protocycloceratidae" genus="Notocycloceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tetrabranchia" pageId="49" pageNumber="50" phylum="Mollusca" rank="species" species="yurabiense">
|
||
<emphasis id="E599EAA8FF9DFF9FFEE47E38FDB17B22" box="[306,623,300,326]" italics="true" pageId="49" pageNumber="50">Notocycloceras yurabiense</emphasis>
|
||
<bibRefCitation id="B37C4B4BFF9DFF9FFDA37E38FC767B23" author="Teichert C. & Glenister B. F." box="[629,936,300,327]" pageId="49" pageNumber="50" pagination="7 - 112" refId="ref50187" refString="Teichert C. & Glenister B. F. 1954. Early Ordovician cephalopod fauna from northwestern Australia. Bulletins of American Paleontology 35: 7 - 112." type="journal article" year="1954">Teichert & Glenister, 1954</bibRefCitation>
|
||
</taxonomicName>
|
||
differ in having subholochoanitic septal necks. The siphuncle of
|
||
<taxonomicName id="10ED4D39FF9DFF9FFE367E5BFCA57B0E" authority="(Billings, 1865)" baseAuthorityName="Billings" baseAuthorityYear="1865" box="[480,891,335,362]" class="Cephalopoda" family="Proterocameroceratidae" genus="Anthoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Endocerida" pageId="49" pageNumber="50" phylum="Mollusca" rank="species" species="xerxes">
|
||
<emphasis id="E599EAA8FF9DFF9FFE367E5BFD677B0D" box="[480,697,335,361]" italics="true" pageId="49" pageNumber="50">Anthoceras xerxes</emphasis>
|
||
(Billings, 1865)
|
||
</taxonomicName>
|
||
is wider (rSD = 0.43). The Siberian forms
|
||
<taxonomicName id="10ED4D39FF9DFF9FFF687E67FDC77BE8" authority="Balashov, 1960" authorityName="Balashov" authorityYear="1960" box="[190,537,370,397]" class="Cephalopoda" family="Proterocameroceratidae" genus="Anthoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Endocerida" pageId="49" pageNumber="50" phylum="Mollusca" rank="species" species="angarense">
|
||
<emphasis id="E599EAA8FF9DFF9FFF687E67FE847BE8" box="[190,346,371,397]" italics="true" pageId="49" pageNumber="50">A. angarense</emphasis>
|
||
Balashov, 1960
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="10ED4D39FF9DFF9FFD817E67FC717BE8" authority="Balashov, 1960" authorityName="Balashov" authorityYear="1960" box="[599,943,370,397]" class="Cephalopoda" family="Proterocameroceratidae" genus="Anthoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Endocerida" pageId="49" pageNumber="50" phylum="Mollusca" rank="species" species="bajkitense">
|
||
<emphasis id="E599EAA8FF9DFF9FFD817E67FD2F7BE8" box="[599,753,370,397]" italics="true" pageId="49" pageNumber="50">A. bajkitense</emphasis>
|
||
Balashov, 1960
|
||
</taxonomicName>
|
||
differ in having less well pronounced annulations and a narrower septal spacing, with ca 10 chambers per distance similar to the corresponding conch diameter, and
|
||
<taxonomicName id="10ED4D39FF9DFF9FFE7D7EADFD2A7BB7" authority="Balashov, 1962" authorityName="Balashov" authorityYear="1962" box="[427,756,441,467]" class="Cephalopoda" family="Proterocameroceratidae" genus="Anthoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Endocerida" pageId="49" pageNumber="50" phylum="Mollusca" rank="species" species="sibiricum">
|
||
<emphasis id="E599EAA8FF9DFF9FFE7D7EADFDE47BB7" box="[427,570,441,467]" italics="true" pageId="49" pageNumber="50">A. sibiricum</emphasis>
|
||
<bibRefCitation id="B37C4B4BFF9DFF9FFD977EADFD2A7BB7" author="Balashov E. G." box="[577,756,441,467]" pageId="49" pageNumber="50" refId="ref45234" refString="Balashov E. G. 1962. Nautiloidei ordovika sibirskoi platformy. Izdatel'stvo Leningradskogo Universiteta, St. Petersburg." type="book" year="1962">Balashov, 1962</bibRefCitation>
|
||
</taxonomicName>
|
||
has an extremely wide siphuncle with an rSD of ca 0.5.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |