208 lines
26 KiB
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208 lines
26 KiB
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<document id="3F4B2CD9DCE358AD685FC633FE28AFFD" ID-CLB-Dataset="22319" ID-DOI="10.5852/ejt.2013.41" ID-GBIF-Dataset="386010a0-6da4-4fa3-9d1a-4b3b5427cac5" ID-ISSN="2118-9773" ID-Zenodo-Dep="3814221" ID-ZooBank="A2F1B9ED-870A-466E-B35E-BD5DA782476E" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1588881240389" checkinUser="carolina" docAuthor="Kröger, Björn" docDate="2013" docId="AD4D9054CD3B6A06F05B4620FBECF99A" docLanguage="en" docName="ejt-2013-41.pdf.imf" docOrigin="European Journal of Taxonomy 41" docStyle="DocumentStyle:EF2B578F1D15862ADE45B0C07C620911.14:EJT.2018-.journal_article.type1" docStyleId="EF2B578F1D15862ADE45B0C07C620911" docStyleName="EJT.2018-.journal_article.type1" docStyleVersion="14" docTitle="Parvihebetoceras wahli Kroger 2007" docType="treatment" docVersion="9" lastPageNumber="97" masterDocId="5174E82CCD646A66F260472AFFA5FFBD" masterDocTitle="The cephalopods of the Boda Limestone, Late Ordovician, of Dalarna, Sweden" masterLastPageNumber="110" masterPageNumber="1" pageNumber="96" updateTime="1698838944441" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-3.0" zenodo-license-figures="CC-BY-3.0" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="319E17FEE3DA6697521EF05D1EA0B558">The cephalopods of the Boda Limestone, Late Ordovician, of Dalarna, Sweden</mods:title>
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<mods:name id="4D631D6AC93846AB9EB090F78B03A3F6" type="personal">
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<mods:namePart id="C59755B62C6E930D9FC6A6347FBA3060">Kröger, Björn</mods:namePart>
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<mods:typeOfResource id="895B26183D820612AC90FA0928CF1779">text</mods:typeOfResource>
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<mods:title id="5407BE96DB7D944FFAC4F443D22B12DE">European Journal of Taxonomy</mods:title>
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</mods:titleInfo>
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<mods:part id="B02254FB153E780CD51DAC11DCD783DB">
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<mods:date id="05766C8347402463ABBA28E6D1F8BCC4">2013</mods:date>
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<mods:detail id="056B474A3DCEC6A14B5F2B3CB155A686" type="pubDate">
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<mods:number id="0F7C95AACBE19CC48C4251DBA24C7EFA">2013-03-27</mods:number>
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<mods:number id="8A337AD839305E58379EE1C0A4953D9A">41</mods:number>
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<mods:start id="7EA3319C1A63B0D26AF6C4F5F0B6081D">1</mods:start>
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<mods:classification id="177393E0584712B463DA665168DC0AA7">journal article</mods:classification>
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<mods:identifier id="4BCC61B53A50D76CB50784F757220F9A" type="CLB-Dataset">22319</mods:identifier>
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<mods:identifier id="91E48B4905E5D4BD306087DCAB0A9CEB" type="DOI">10.5852/ejt.2013.41</mods:identifier>
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<mods:identifier id="936C858D9F3F3DB7057375A9D766EAA2" type="GBIF-Dataset">386010a0-6da4-4fa3-9d1a-4b3b5427cac5</mods:identifier>
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<mods:identifier id="AC253158DC96A1B27DD5F886B5501FBF" type="ISSN">2118-9773</mods:identifier>
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<mods:identifier id="B1BE572FA8796DB6933E9BAA461ACE4D" type="Zenodo-Dep">3814221</mods:identifier>
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</mods:mods>
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<treatment id="AD4D9054CD3B6A06F05B4620FBECF99A" ID-DOI="http://doi.org/10.5281/zenodo.3815088" ID-GBIF-Taxon="163977207" ID-Zenodo-Dep="3815088" LSID="urn:lsid:plazi:treatment:AD4D9054CD3B6A06F05B4620FBECF99A" httpUri="http://treatment.plazi.org/id/AD4D9054CD3B6A06F05B4620FBECF99A" lastPageId="96" lastPageNumber="97" pageId="95" pageNumber="96">
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<subSubSection id="6DFE72C9CD3B6A39F05B4620FC5CFE98" box="[571,1017,266,293]" pageId="95" pageNumber="96" type="nomenclature">
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<paragraph id="255B2142CD3B6A39F05B4620FC5CFE98" blockId="95.[571,1017,266,328]" box="[571,1017,266,293]" pageId="95" pageNumber="96">
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<heading id="7E13962ECD3B6A39F05B4620FC5CFE98" box="[571,1017,266,293]" centered="true" fontSize="11" level="2" pageId="95" pageNumber="96" reason="2">
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<taxonomicName id="E2E45AC1CD3B6A39F05B4620FC5CFE98" authority="Kroger, 2007" authorityName="Kroger" authorityYear="2007" box="[571,1017,266,293]" class="Cephalopoda" family="Hebetoceratidae" genus="Parvihebetoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ascocerida" pageId="95" pageNumber="96" phylum="Mollusca" rank="species" species="wahli">
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<emphasis id="1790FD50CD3B6A39F05B4620FCF3FE98" bold="true" box="[571,854,266,293]" italics="true" pageId="95" pageNumber="96">Parvihebetoceras wahli</emphasis>
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<bibRefCitation id="41755CB3CD3B6A39F13D4621FC5CFE98" author="Kroger B." box="[861,1017,267,293]" pageId="95" pageNumber="96" pagination="591 - 608" refId="ref48327" refString="Kroger B. 2007. Concentrations of juvenile and small adult cephalopods in the Hirnantian cherts (Late Ordovician) of Porkuni, Estonia. Acta Palaeontologica Polonica 52: 591 - 608." type="journal article" year="2007">Kröger, 2007</bibRefCitation>
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</taxonomicName>
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</heading>
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</paragraph>
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</subSubSection>
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<subSubSection id="6DFE72C9CD3B6A39F0904604FCE6FEF5" box="[752,835,302,328]" pageId="95" pageNumber="96" type="description">
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<paragraph id="255B2142CD3B6A39F0904604FCE6FEF5" blockId="95.[571,1017,266,328]" box="[752,835,302,328]" pageId="95" pageNumber="96">
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<figureCitation id="BDDF3DC7CD3B6A39F0904604FCE6FEF5" box="[752,835,302,328]" captionStart="Fig" captionStartId="95.[189,232,1918,1944]" captionTargetBox="[229,1438,700,1886]" captionTargetId="figure@95.[229,1438,671,1877]" captionTargetPageId="95" captionText="Fig. 44. Parvihebetoceras wahli Kröger, 2007, PMU 26949, Kallholn, Boda Limestone. A. Lateral view. B. Adapical view. C. Median section with one septum preserved. Scale bar = 5 mm for all figures." figureDoi="http://doi.org/10.5281/zenodo.3814315" httpUri="https://zenodo.org/record/3814315/files/figure.png" pageId="95" pageNumber="96">Fig. 44</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection id="6DFE72C9CD3B6A39F2DD4645FCFBFE37" box="[189,862,367,394]" pageId="95" pageNumber="96" type="reference_group">
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<paragraph id="255B2142CD3B6A39F2DD4645FCFBFE37" blockId="95.[189,862,367,394]" box="[189,862,367,394]" pageId="95" pageNumber="96">
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<treatmentCitationGroup id="05F4066CCD3B6A39F2DD4645FCFBFE37" box="[189,862,367,394]" pageId="95" pageNumber="96">
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<treatmentCitation id="A4450753CD3B6A39F2DD4645FD10FE37" author="Kroger B." box="[189,693,367,394]" page="599" pageId="95" pageNumber="96" year="2007">
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<taxonomicName id="E2E45AC1CD3B6A39F2DD4645FD10FE37" authority="Kroger, 2007: 599" authorityName="Kroger" authorityPageNumber="599" authorityYear="2007" box="[189,693,367,394]" class="Cephalopoda" family="Hebetoceratidae" genus="Parvihebetoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ascocerida" pageId="95" pageNumber="96" phylum="Mollusca" rank="species" species="wahli">
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<emphasis id="1790FD50CD3B6A39F2DD4645FE71FE34" box="[189,468,367,393]" italics="true" pageId="95" pageNumber="96">Parvihebetoceras wahli</emphasis>
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<bibRefCitation id="41755CB3CD3B6A39F3BC465AFD10FE37" author="Kroger B." box="[476,693,367,394]" pageId="95" pageNumber="96" pagination="591 - 608" refId="ref48327" refString="Kroger B. 2007. Concentrations of juvenile and small adult cephalopods in the Hirnantian cherts (Late Ordovician) of Porkuni, Estonia. Acta Palaeontologica Polonica 52: 591 - 608." type="journal article" year="2007">Kröger, 2007: 599</bibRefCitation>
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</taxonomicName>
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</treatmentCitation>
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, figs 4c, 7c, 9.
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</treatmentCitationGroup>
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</paragraph>
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</subSubSection>
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<subSubSection id="6DFE72C9CD3B6A39F2DD469BFDE1FE47" box="[189,580,433,506]" pageId="95" pageNumber="96" type="diagnosis">
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<paragraph id="255B2142CD3B6A39F2DD469BFE93FE76" blockId="95.[189,310,433,459]" box="[189,310,433,459]" pageId="95" pageNumber="96">
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<heading id="7E13962ECD3B6A39F2DD469BFE93FE76" bold="true" box="[189,310,433,459]" fontSize="11" level="3" pageId="95" pageNumber="96" reason="3">
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<emphasis id="1790FD50CD3B6A39F2DD469BFE93FE76" bold="true" box="[189,310,433,459]" pageId="95" pageNumber="96">Diagnosis</emphasis>
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</heading>
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</paragraph>
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<paragraph id="255B2142CD3B6A39F2DD46CAFDE1FE47" blockId="95.[189,580,479,506]" box="[189,580,479,506]" pageId="95" pageNumber="96">Same as for genus, by monotypy.</paragraph>
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</subSubSection>
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<subSubSection id="6DFE72C9CD3B6A39F2DD450BFC31FDD4" pageId="95" pageNumber="96" type="distribution">
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<paragraph id="255B2142CD3B6A39F2DD450BFE5EFD86" blockId="95.[189,507,545,571]" box="[189,507,545,571]" pageId="95" pageNumber="96">
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<heading id="7E13962ECD3B6A39F2DD450BFE5EFD86" bold="true" box="[189,507,545,571]" fontSize="11" level="3" pageId="95" pageNumber="96" reason="3">
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<emphasis id="1790FD50CD3B6A39F2DD450BFE5EFD86" bold="true" box="[189,507,545,571]" pageId="95" pageNumber="96">
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<typeStatus id="FA5F9FE0CD3B6A39F2DD450BFF5FFD86" box="[189,250,545,571]" pageId="95" pageNumber="96">Type</typeStatus>
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locality and horizon
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</emphasis>
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</heading>
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</paragraph>
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<paragraph id="255B2142CD3B6A39F2DD4565FC31FDD4" blockId="95.[189,916,591,617]" box="[189,916,591,617]" pageId="95" pageNumber="96">
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Porkuni,
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<collectingCountry id="5DF361D2CD3B6A39F3494565FE21FDD4" box="[297,388,591,617]" name="Estonia" pageId="95" pageNumber="96">Estonia</collectingCountry>
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, Porkuni Formation, Hirnantian, Ordovician.
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</paragraph>
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</subSubSection>
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<caption id="719B71CACD3B6A39F2DD4054FAD2F801" ID-DOI="http://doi.org/10.5281/zenodo.3814315" ID-Zenodo-Dep="3814315" httpUri="https://zenodo.org/record/3814315/files/figure.png" pageId="95" pageNumber="96" startId="95.[189,232,1918,1944]" targetBox="[229,1438,700,1886]" targetPageId="95">
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<paragraph id="255B2142CD3B6A39F2DD4054FAD2F801" blockId="95.[189,1399,1918,1981]" pageId="95" pageNumber="96">
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<emphasis id="1790FD50CD3B6A39F2DD4054FEBBF824" bold="true" box="[189,286,1918,1945]" pageId="95" pageNumber="96">Fig. 44.</emphasis>
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<taxonomicName id="E2E45AC1CD3B6A39F3494055FD56F824" authority="Kroger, 2007" authorityName="Kroger" authorityYear="2007" box="[297,755,1919,1945]" class="Cephalopoda" family="Hebetoceratidae" genus="Parvihebetoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ascocerida" pageId="95" pageNumber="96" phylum="Mollusca" rank="species" species="wahli">
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<emphasis id="1790FD50CD3B6A39F3494055FDE1F824" box="[297,580,1919,1945]" italics="true" pageId="95" pageNumber="96">Parvihebetoceras wahli</emphasis>
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<bibRefCitation id="41755CB3CD3B6A39F0304055FD56F824" author="Kroger B." box="[592,755,1919,1945]" pageId="95" pageNumber="96" pagination="591 - 608" refId="ref48327" refString="Kroger B. 2007. Concentrations of juvenile and small adult cephalopods in the Hirnantian cherts (Late Ordovician) of Porkuni, Estonia. Acta Palaeontologica Polonica 52: 591 - 608." type="journal article" year="2007">Kröger, 2007</bibRefCitation>
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</taxonomicName>
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, PMU 26949, Kallholn, Boda Limestone.
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<emphasis id="1790FD50CD3B6A39F69B4054FAB5F825" bold="true" box="[1275,1296,1918,1944]" pageId="95" pageNumber="96">A</emphasis>
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. Lateral view.
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<emphasis id="1790FD50CD3B6A39F3624088FEB3F801" bold="true" box="[258,278,1954,1980]" pageId="95" pageNumber="96">B</emphasis>
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. Adapical view.
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<emphasis id="1790FD50CD3B6A39F3B84088FE48F801" bold="true" box="[472,493,1954,1980]" pageId="95" pageNumber="96">C</emphasis>
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. Median section with one septum preserved. Scale bar = 5 mm for all figures.
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</paragraph>
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</caption>
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<subSubSection id="6DFE72C9CD046A06F2DD4621FE03FECB" pageId="96" pageNumber="97" type="key">
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<paragraph id="255B2142CD046A06F2DD4621FE8FFE98" blockId="96.[189,298,267,293]" box="[189,298,267,293]" pageId="96" pageNumber="97">
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<heading id="7E13962ECD046A06F2DD4621FE8FFE98" bold="true" box="[189,298,267,293]" fontSize="11" level="3" pageId="96" pageNumber="97" reason="3">
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<emphasis id="1790FD50CD046A06F2DD4621FE8FFE98" bold="true" box="[189,298,267,293]" pageId="96" pageNumber="97">Material</emphasis>
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</heading>
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</paragraph>
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<paragraph id="255B2142CD046A06F2DD4610FE03FECB" blockId="96.[189,1398,313,374]" pageId="96" pageNumber="97">
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One specimen (PMU 26949), Kallholn,
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<collectingRegion id="E720EFA0CD046A06F0FF4613FD5AFEEE" box="[671,767,313,339]" country="Sweden" name="Dalarna" pageId="96" pageNumber="97">Dalarna</collectingRegion>
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,
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<collectingCountry id="5DF361D2CD046A06F16C4613FCC9FEEE" box="[780,876,313,339]" name="Sweden" pageId="96" pageNumber="97">Sweden</collectingCountry>
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, Boda Limestone, Boda Core Member, late Katian, Ordovician.
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</paragraph>
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</subSubSection>
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<subSubSection id="6DFE72C9CD046A06F2DD46B4FA9DFC30" pageId="96" pageNumber="97" type="description">
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<paragraph id="255B2142CD046A06F2DD46B4FEEBFE05" blockId="96.[189,334,414,440]" box="[189,334,414,440]" pageId="96" pageNumber="97">
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<heading id="7E13962ECD046A06F2DD46B4FEEBFE05" bold="true" box="[189,334,414,440]" fontSize="11" level="3" pageId="96" pageNumber="97" reason="3">
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<emphasis id="1790FD50CD046A06F2DD46B4FEEBFE05" bold="true" box="[189,334,414,440]" pageId="96" pageNumber="97">Description</emphasis>
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</heading>
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</paragraph>
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<paragraph id="255B2142CD046A06F2DD46E6FA9DFC30" blockId="96.[189,1399,460,909]" pageId="96" pageNumber="97">
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The specimen is a fragment of a body chamber with one apical chamber of the phragmocone (
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<figureCitation id="BDDF3DC7CD046A06F77146E6FACFFE5A" box="[1297,1386,460,487]" captionStart="Fig" captionStartId="95.[189,232,1918,1944]" captionTargetBox="[229,1438,700,1886]" captionTargetId="figure@95.[229,1438,671,1877]" captionTargetPageId="95" captionText="Fig. 44. Parvihebetoceras wahli Kröger, 2007, PMU 26949, Kallholn, Boda Limestone. A. Lateral view. B. Adapical view. C. Median section with one septum preserved. Scale bar = 5 mm for all figures." figureDoi="http://doi.org/10.5281/zenodo.3814315" httpUri="https://zenodo.org/record/3814315/files/figure.png" pageId="96" pageNumber="97">Fig. 44</figureCitation>
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). The conch is slightly curved, the cross section circular,
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<quantity id="E21C8CA7CD046A06F12746DAFC71FDB7" box="[839,980,496,523]" metricMagnitude="-3" metricUnit="m" metricValue="6.85" metricValueMax="8.3" metricValueMin="5.4" pageId="96" pageNumber="97" unit="mm" value="6.85" valueMax="8.3" valueMin="5.4">5.4–8.3 mm</quantity>
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in diameter and
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<quantity id="E21C8CA7CD046A06F6F846DAFB4EFDB7" box="[1176,1259,496,522]" metricMagnitude="-2" metricUnit="m" metricValue="1.6" pageId="96" pageNumber="97" unit="mm" value="16.0">16 mm</quantity>
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long (angle of expansion 10°). The shell surface is partly preserved and smooth. Apically the conch is truncated with a dome-shaped, deeply convex septum of truncation. The adapical surface of the septum of truncation is rugged. The convexity of the septum is
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<quantity id="E21C8CA7CD046A06F0CD4573FCAFFDC9" box="[685,778,601,628]" metricMagnitude="-3" metricUnit="m" metricValue="3.5" pageId="96" pageNumber="97" unit="mm" value="3.5">3.5 mm</quantity>
|
|||
|
|
. The tip of the septal dome is slightly subcentral, off the center of the conch in direction toward the convex side of the conch curvature. A second septum is preserved, ca.
|
|||
|
|
<quantity id="E21C8CA7CD046A06F301458AFE06FD07" box="[353,419,672,698]" metricMagnitude="-3" metricUnit="m" metricValue="4.0" pageId="96" pageNumber="97" unit="mm" value="4.0">4 mm</quantity>
|
|||
|
|
adorally of the septum of truncation, which is less convex and with a subcentral septal perforation (
|
|||
|
|
<figureCitation id="BDDF3DC7CD046A06F33145E9FE1AFD60" box="[337,447,707,733]" captionStart="Fig" captionStartId="95.[189,232,1918,1944]" captionTargetBox="[229,1438,700,1886]" captionTargetId="figure@95.[229,1438,671,1877]" captionTargetPageId="95" captionText="Fig. 44. Parvihebetoceras wahli Kröger, 2007, PMU 26949, Kallholn, Boda Limestone. A. Lateral view. B. Adapical view. C. Median section with one septum preserved. Scale bar = 5 mm for all figures." figureDoi="http://doi.org/10.5281/zenodo.3814315" httpUri="https://zenodo.org/record/3814315/files/figure.png" pageId="96" pageNumber="97">Fig. 44C</figureCitation>
|
|||
|
|
). The shape of the septal neck is poorly preserved, but probably was achoanitic or very short suborthochoanitic; it appears longer on the prosiphuncular side of the conch. Parts of the connecting ring are preserved, which indicate a slightly expanded siphuncular segment. Because of the poor preservation of the internal details, the presence or absence of cameral deposits is difficult to evaluate, but thin hyposeptal deposits appear to be present at the adoral septum (
|
|||
|
|
<figureCitation id="BDDF3DC7CD046A06F6C3447AFAABFCD7" box="[1187,1294,848,874]" captionStart="Fig" captionStartId="95.[189,232,1918,1944]" captionTargetBox="[229,1438,700,1886]" captionTargetId="figure@95.[229,1438,671,1877]" captionTargetPageId="95" captionText="Fig. 44. Parvihebetoceras wahli Kröger, 2007, PMU 26949, Kallholn, Boda Limestone. A. Lateral view. B. Adapical view. C. Median section with one septum preserved. Scale bar = 5 mm for all figures." figureDoi="http://doi.org/10.5281/zenodo.3814315" httpUri="https://zenodo.org/record/3814315/files/figure.png" pageId="96" pageNumber="97">Fig. 44C</figureCitation>
|
|||
|
|
) and the rugged surface of the septum of truncation may be interpreted as the surface of episeptal deposits.
|
|||
|
|
</paragraph>
|
|||
|
|
</subSubSection>
|
|||
|
|
<subSubSection id="6DFE72C9CD046A06F2DD449FFBECF99A" pageId="96" pageNumber="97" type="discussion">
|
|||
|
|
<paragraph id="255B2142CD046A06F2DD449FFE8AFC72" blockId="96.[189,303,949,975]" box="[189,303,949,975]" pageId="96" pageNumber="97">
|
|||
|
|
<heading id="7E13962ECD046A06F2DD449FFE8AFC72" bold="true" box="[189,303,949,975]" fontSize="11" level="3" pageId="96" pageNumber="97" reason="3">
|
|||
|
|
<emphasis id="1790FD50CD046A06F2DD449FFE8AFC72" bold="true" box="[189,303,949,975]" pageId="96" pageNumber="97">Remarks</emphasis>
|
|||
|
|
</heading>
|
|||
|
|
</paragraph>
|
|||
|
|
<paragraph id="255B2142CD046A06F2DD44C9FF5BFB4E" blockId="96.[189,1399,995,1267]" pageId="96" pageNumber="97">
|
|||
|
|
The deeply convex, dome-shaped septum of truncation, the shape of the septal necks and the position and shape of the siphuncle are diagnostic characters of
|
|||
|
|
<taxonomicName id="E2E45AC1CD046A06F131432CFB85FB9D" authorityName="Kroger" authorityYear="2007" box="[849,1056,1030,1056]" class="Cephalopoda" family="Hebetoceratidae" genus="Parvihebetoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ascocerida" pageId="96" pageNumber="97" phylum="Mollusca" rank="genus">
|
|||
|
|
<emphasis id="1790FD50CD046A06F131432CFB85FB9D" box="[849,1056,1030,1056]" italics="true" pageId="96" pageNumber="97">Parvihebetoceras</emphasis>
|
|||
|
|
</taxonomicName>
|
|||
|
|
. The conch size of the Boda specimen is identical to that of
|
|||
|
|
<taxonomicName id="E2E45AC1CD046A06F0594303FC5FFBFE" authority="Kroger, 2007" authorityName="Kroger" authorityYear="2007" box="[569,1018,1065,1092]" class="Cephalopoda" family="Hebetoceratidae" genus="Parvihebetoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ascocerida" pageId="96" pageNumber="97" phylum="Mollusca" rank="species" species="wahli">
|
|||
|
|
<emphasis id="1790FD50CD046A06F0594303FCF6FBFE" box="[569,851,1065,1091]" italics="true" pageId="96" pageNumber="97">Parvihebetoceras wahli</emphasis>
|
|||
|
|
<bibRefCitation id="41755CB3CD046A06F13C4300FC5FFBFE" author="Kroger B." box="[860,1018,1065,1092]" pageId="96" pageNumber="97" pagination="591 - 608" refId="ref48327" refString="Kroger B. 2007. Concentrations of juvenile and small adult cephalopods in the Hirnantian cherts (Late Ordovician) of Porkuni, Estonia. Acta Palaeontologica Polonica 52: 591 - 608." type="journal article" year="2007">Kröger, 2007</bibRefCitation>
|
|||
|
|
</taxonomicName>
|
|||
|
|
from the Porkuni Formation of northern
|
|||
|
|
<collectingCountry id="5DF361D2CD046A06F34C4366FE2DFBDB" box="[300,392,1100,1126]" name="Estonia" pageId="96" pageNumber="97">Estonia</collectingCountry>
|
|||
|
|
.
|
|||
|
|
<taxonomicName id="E2E45AC1CD046A06F3F64367FE59FBDA" authorityName="Kroger" authorityYear="2007" box="[406,508,1101,1127]" class="Cephalopoda" family="Hebetoceratidae" genus="Parvihebetoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ascocerida" pageId="96" pageNumber="97" phylum="Mollusca" rank="species" species="wahli">
|
|||
|
|
<emphasis id="1790FD50CD046A06F3F64367FE0DFBDB" box="[406,424,1101,1126]" italics="true" pageId="96" pageNumber="97">P</emphasis>
|
|||
|
|
.
|
|||
|
|
<emphasis id="1790FD50CD046A06F3DB4367FE59FBDA" box="[443,508,1101,1127]" italics="true" pageId="96" pageNumber="97">wahli</emphasis>
|
|||
|
|
</taxonomicName>
|
|||
|
|
reaches its adult size with a diameter of ca.
|
|||
|
|
<quantity id="E21C8CA7CD046A06F64B4367FBD6FBDA" box="[1067,1139,1101,1127]" metricMagnitude="-3" metricUnit="m" metricValue="7.0" pageId="96" pageNumber="97" unit="mm" value="7.0">7 mm</quantity>
|
|||
|
|
and has a septum of truncation at diameters of ca.
|
|||
|
|
<quantity id="E21C8CA7CD046A06F042435AFDCFFB37" box="[546,618,1136,1163]" metricMagnitude="-3" metricUnit="m" metricValue="5.0" pageId="96" pageNumber="97" unit="mm" value="5.0">5 mm</quantity>
|
|||
|
|
. Because of the general similarity of the Boda specimen with the Estonian specimens described in
|
|||
|
|
<bibRefCitation id="41755CB3CD046A06F02843B9FD50FB10" author="Kroger B." box="[584,757,1171,1197]" pageId="96" pageNumber="97" pagination="591 - 608" refId="ref48327" refString="Kroger B. 2007. Concentrations of juvenile and small adult cephalopods in the Hirnantian cherts (Late Ordovician) of Porkuni, Estonia. Acta Palaeontologica Polonica 52: 591 - 608." type="journal article" year="2007">Kröger (2007)</bibRefCitation>
|
|||
|
|
, it is regarded as conspecific with
|
|||
|
|
<taxonomicName id="E2E45AC1CD046A06F6F143BEFB51FB10" authorityName="Kroger" authorityYear="2007" box="[1169,1268,1171,1197]" class="Cephalopoda" family="Hebetoceratidae" genus="Parvihebetoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ascocerida" pageId="96" pageNumber="97" phylum="Mollusca" rank="species" species="wahli">
|
|||
|
|
<emphasis id="1790FD50CD046A06F6F143BEFB06FB10" box="[1169,1187,1172,1197]" italics="true" pageId="96" pageNumber="97">P</emphasis>
|
|||
|
|
.
|
|||
|
|
<emphasis id="1790FD50CD046A06F6D343B9FB51FB10" box="[1203,1268,1171,1197]" italics="true" pageId="96" pageNumber="97">wahli</emphasis>
|
|||
|
|
</taxonomicName>
|
|||
|
|
. However, the Estonian specimens of
|
|||
|
|
<taxonomicName id="E2E45AC1CD046A06F063439DFDC2FB6D" authorityName="Kroger" authorityYear="2007" box="[515,615,1206,1233]" class="Cephalopoda" family="Hebetoceratidae" genus="Parvihebetoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ascocerida" pageId="96" pageNumber="97" phylum="Mollusca" rank="species" species="wahli">
|
|||
|
|
<emphasis id="1790FD50CD046A06F063439DFDB0FB6D" box="[515,533,1207,1232]" italics="true" pageId="96" pageNumber="97">P</emphasis>
|
|||
|
|
.
|
|||
|
|
<emphasis id="1790FD50CD046A06F046439CFDC2FB6D" box="[550,615,1206,1232]" italics="true" pageId="96" pageNumber="97">wahli</emphasis>
|
|||
|
|
</taxonomicName>
|
|||
|
|
appear slightly more brevidomic and have slightly smaller adult sizes.
|
|||
|
|
</paragraph>
|
|||
|
|
<paragraph id="255B2142CD046A06F2DD4231FEC1FA23" blockId="96.[189,1399,1307,1438]" pageId="96" pageNumber="97">The specimen described herein shows features that can be interpreted as hyposeptal deposits on the adoral septum. However, because of the poor preservation of the internal characters, it is impossible to evaluate if these are primary or secondary deposits. Therefore, they are not included within the diagnosis of the species.</paragraph>
|
|||
|
|
<paragraph id="255B2142CD046A06F2DD42ECFBECF99A" blockId="96.[189,1399,1478,1575]" pageId="96" pageNumber="97">
|
|||
|
|
The rough, poorly preserved surface of the septum of truncation is similar to that in the middle Silurian
|
|||
|
|
<taxonomicName id="E2E45AC1CD046A06F2DD42C3FE54F9BE" authority="Flower, 1962" authorityName="Flower" authorityYear="1962" box="[189,497,1513,1539]" class="Cephalopoda" family="Sphooceratidae" genus="Sphooceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Orthocerida" pageId="96" pageNumber="97" phylum="Mollusca" rank="genus">
|
|||
|
|
<emphasis id="1790FD50CD046A06F2DD42C3FEE3F9BE" box="[189,326,1513,1539]" italics="true" pageId="96" pageNumber="97">Sphooceras</emphasis>
|
|||
|
|
<bibRefCitation id="41755CB3CD046A06F33142C3FE54F9BE" author="Flower R. H." box="[337,497,1513,1539]" pageId="96" pageNumber="97" pagination="1 - 58" refId="ref47454" refString="Flower R. H. 1962. Part 1, Revision of Buttsoceras. Part 2, Notes on the Michelinoceratida. State Bureau of Mines and Mineral Resources, New Mexico Institute of Mining and Technology, Memoir 10: 1 - 58." type="journal article" year="1962">Flower, 1962</bibRefCitation>
|
|||
|
|
</taxonomicName>
|
|||
|
|
, but in
|
|||
|
|
<taxonomicName id="E2E45AC1CD046A06F03342C3FD79F9BE" authorityName="Flower" authorityYear="1962" box="[595,732,1513,1539]" class="Cephalopoda" family="Sphooceratidae" genus="Sphooceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Orthocerida" pageId="96" pageNumber="97" phylum="Mollusca" rank="genus">
|
|||
|
|
<emphasis id="1790FD50CD046A06F03342C3FD79F9BE" box="[595,732,1513,1539]" italics="true" pageId="96" pageNumber="97">Sphooceras</emphasis>
|
|||
|
|
</taxonomicName>
|
|||
|
|
the shape of the septal necks and siphuncle differ and heavy cameral deposits are developed, which are absent in
|
|||
|
|
<taxonomicName id="E2E45AC1CD046A06F1134126FBE7F99B" authorityName="Kroger" authorityYear="2007" box="[883,1090,1548,1574]" class="Cephalopoda" family="Hebetoceratidae" genus="Parvihebetoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ascocerida" pageId="96" pageNumber="97" phylum="Mollusca" rank="genus">
|
|||
|
|
<emphasis id="1790FD50CD046A06F1134126FBE7F99B" box="[883,1090,1548,1574]" italics="true" pageId="96" pageNumber="97">Parvihebetoceras</emphasis>
|
|||
|
|
</taxonomicName>
|
|||
|
|
.
|
|||
|
|
</paragraph>
|
|||
|
|
</subSubSection>
|
|||
|
|
</treatment>
|
|||
|
|
</document>
|