307 lines
35 KiB
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307 lines
35 KiB
XML
<document id="5A3CB27B6C71EFD3204E8A84EA13D934" 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="5F4487ACFFA7FFA3FDB07D9DFE857F79" 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="Lawrenceoceras larus Kröger & Pohle 2021, sp. nov" docType="treatment" docUuid="B0503E12-D63A-4656-BAE7-8C22CFB40D5E" docUuidSource="ZooBank" docVersion="9" lastPageNumber="14" masterDocId="A37DFFD4FFACFFAEFFD67F14FFDE7A64" masterDocTitle="Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities" masterLastPageNumber="102" masterPageNumber="1" pageNumber="12" 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="2D65B4C0324109E7C1B7F6029D3DBC27">Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities</mods:title>
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<mods:namePart id="A72C3D6C3B6809BE84BEB98B3A56297D">Kröger, Björn</mods:namePart>
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<mods:affiliation id="9ADB64A0E0D6A8CBF3230231F5B1ACC1">Finnish Museum of Natural History, University of Helsinki, PO Box 44, FI- 00014 Helsinki, Finland.</mods:affiliation>
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<mods:nameIdentifier id="1C2A0E70121E392F83F0A42443039FD4" type="email">bjorn.kroger@helsinki.fi</mods:nameIdentifier>
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<mods:namePart id="2AE93D840AEEE37604564934B61F791E">Pohle, Alexander</mods:namePart>
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<mods:affiliation id="D69857D7AB7F2781830C8713307F0569">Paläontologisches Institut und Museum, University of Zurich, Zurich, Switzerland.</mods:affiliation>
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<mods:title id="5716E6036F6ABD0B896F843846DF3DBC">European Journal of Taxonomy</mods:title>
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<mods:date id="151E45BD5862DAD8F5F147B0695056AF">2021</mods:date>
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<treatment id="5F4487ACFFA7FFA3FDB07D9DFE857F79" ID-DOI="http://doi.org/10.5281/zenodo.5795788" ID-GBIF-Taxon="191693599" ID-Zenodo-Dep="5795788" LSID="urn:lsid:zoobank.org:act:B0503E12-D63A-4656-BAE7-8C22CFB40D5E" httpUri="http://treatment.plazi.org/id/5F4487ACFFA7FFA3FDB07D9DFE857F79" lastPageId="13" lastPageNumber="14" pageId="11" pageNumber="12">
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<subSubSection id="9FF76531FFA7FFA5FDB07D9DFC1378C7" box="[614,973,648,675]" pageId="11" pageNumber="12" type="nomenclature">
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<paragraph id="D75236BAFFA7FFA5FDB07D9DFC1378C7" blockId="11.[362,1226,648,746]" box="[614,973,648,675]" pageId="11" pageNumber="12">
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<heading id="8C1A81D6FFA7FFA5FDB07D9DFC1378C7" box="[614,973,648,675]" centered="true" fontSize="11" level="2" pageId="11" pageNumber="12" reason="2">
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<taxonomicName id="10ED4D39FFA7FFA5FDB07D9DFCAF78C7" authority="Kröger & Pohle, 2021" authorityName="Kröger & Pohle" authorityYear="2021" box="[614,881,648,675]" class="Cephalopoda" family="Bassleroceratidae" genus="Lawrenceoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ellesmerocerida" pageId="11" pageNumber="12" phylum="Mollusca" rank="species" species="larus" status="sp. nov.">
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<emphasis id="E599EAA8FFA7FFA5FDB07D9DFCAF78C7" bold="true" box="[614,881,648,675]" italics="true" pageId="11" pageNumber="12">Lawrenceoceras larus</emphasis>
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<taxonomicNameLabel id="FEAA57D3FFA7FFA5FCAE7D9DFC1378C7" box="[888,973,649,675]" pageId="11" pageNumber="12" rank="species">sp. nov</taxonomicNameLabel>
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urn:lsid:zoobank.org:act:
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<uuid id="A34B0C6FFFA7FFA5FD5C7DB8FB1478A3" box="[650,1226,684,711]" pageId="11" pageNumber="12">B0503E12-D63A-4656-BAE7-8C22CFB40D5E</uuid>
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<paragraph id="D75236BAFFA7FFA5FD7F7DDBFC52788D" blockId="11.[362,1226,648,746]" box="[681,908,719,746]" pageId="11" pageNumber="12">
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<figureCitation id="4FD62A3FFFA7FFA5FD7F7DDBFCF5788E" box="[681,811,719,746]" captionStart="Fig" captionStartId="10.[189,232,1530,1556]" captionTargetBox="[245,1345,270,1490]" captionTargetId="figure-13@10.[239,1349,264,1492]" captionTargetPageId="10" captionText="Fig. 5. Cyrtoconic cephalopods from the Olenidsletta Member, Floian, Ordovician, Profilstranda section, Ny Friesland, Spitsbergen. A–C. Lawrenceoceras larus sp. nov., FMNH-P30351, holotype, from bed PO 131. A. Lateral view with siphuncle on left side. B. Ventral view, prosiphuncular side. C. Adoral view of septum and septal perforation.D–E. Lawrenceoceras ebenus sp. nov., FMNH-P30335, holotype, from bed PO 123.3. D. Lateral view with siphuncle on left side. E. Ventral view, prosiphuncular side. F–G. Olenidslettoceras farmi gen. et sp. nov., FMNH-P30334, holotype, from bed PO 123.3. F. Lateral view with siphuncle on left side. G. Ventral view, prosiphuncular side. H–N. Vallhalloceras floweri King & Evans, 1990. H–I. Specimen FMNH-P30337, from bed PO 131. H. Lateral view, siphuncle on right side I. Ventral view, prosiphuncular side. J–L. Specimen FMNH-P30343 from bed PO 123.3, J. Lateral view with siphuncle on left side. K. Ventral view, prosiphuncular side. L. Dorsal view, antisiphuncular side.M–N. Specimen FMNH-P30338 from bed PO 131. M. Lateral view with siphuncle on left side. N. Ventral view, prosiphuncular side. O–Q. Cyclostomiceras profilstrandense sp. nov., specimen FMNH-P30336, from bed PO 123.3. O. Lateral view with siphuncle on left side. P. Ventral view, prosiphuncular side. Q. Dorsal view, antisiphuncular side. Scale bar = 10 mm for all figures." figureDoi="http://doi.org/10.5281/zenodo.5793432" httpUri="https://zenodo.org/record/5793432/files/figure.png" pageId="11" pageNumber="12">Figs 5A–C</figureCitation>
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,
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<figureCitation id="4FD62A3FFFA7FFA5FCE17DDBFC82788D" box="[823,860,719,745]" captionStart="Fig" captionStartId="11.[189,232,1818,1844]" captionTargetBox="[189,1397,974,1778]" captionTargetId="figure-176@11.[189,1398,974,1780]" captionTargetPageId="11" captionText="Fig. 6. Median sections of cyrtoconic cephalopods from the Olenidsletta Member, Floian, Ordovician, Profilstranda section, Ny Friesland, Spitsbergen. A. Lawrenceoceras ebenus sp. nov., FMNH-P30335, holotype, from bed PO 123.3. B. Lawrenceoceras larus sp. nov., FMNH-P30355, paratype, from bed PO 131. C. Vallhalloceras floweri Evans & King, 1990, FMNH-P30340, from bed PO 131. D. Olenidslettoceras farmi gen. et sp. nov., FMNH-P30334, holotype, from bed PO 123.3. Scale bar = 5 mm for all figures." figureDoi="http://doi.org/10.5281/zenodo.5793436" httpUri="https://zenodo.org/record/5793436/files/figure.png" pageId="11" pageNumber="12">6B</figureCitation>
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,
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<figureCitation id="4FD62A3FFFA7FFA5FCBE7DDBFC52788D" box="[872,908,719,745]" captionStart="Fig" captionStartId="12.[189,232,1846,1872]" captionTargetBox="[189,1398,1029,1808]" captionTargetId="figure-102@12.[189,1398,1029,1808]" captionTargetPageId="12" captionText="Fig. 7. Details of siphuncle and septal necks, median sections of cyrtoconic ellesmeroceratids from the Olenidsletta Member, Floian, Ordovician, Profilstranda section, Ny Friesland, Spitsbergen. Note the loxochoanitic septal necks and the concave siphuncular segments. A. Lawrenceoceras larus sp. nov., FMNH-P30355, paratype, from bed PO 131. B. Lawrenceoceras ebenus sp. nov., FMNH-P30335, holotype, from bed PO 123.3. Scale bar = 1 mm for all figures." figureDoi="http://doi.org/10.5281/zenodo.5793438" httpUri="https://zenodo.org/record/5793438/files/figure.png" pageId="11" pageNumber="12">7A</figureCitation>
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</paragraph>
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<subSubSection id="9FF76531FFA7FFA2FF6B7C04FE0F7B22" lastPageId="12" lastPageNumber="13" pageId="11" pageNumber="12" type="diagnosis">
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<paragraph id="D75236BAFFA7FFA5FF6B7C04FEE8794E" blockId="11.[189,310,784,810]" box="[189,310,784,810]" pageId="11" pageNumber="12">
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<heading id="8C1A81D6FFA7FFA5FF6B7C04FEE8794E" bold="true" box="[189,310,784,810]" fontSize="11" level="3" pageId="11" pageNumber="12" reason="3">
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<emphasis id="E599EAA8FFA7FFA5FF6B7C04FEE8794E" bold="true" box="[189,310,784,810]" pageId="11" pageNumber="12">Diagnosis</emphasis>
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</heading>
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</paragraph>
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<paragraph id="D75236BAFFA7FFA5FF6B7C2BFAA97918" blockId="11.[189,1399,831,893]" pageId="11" pageNumber="12">Exogastrically curved conch with angle of expansion of conch width of ca 3° and slightly depressed conch cross section (rW = 1.16); conch surface smooth with fine irregularly spaced growth lines which</paragraph>
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<caption id="83926632FFA7FFA5FF6B780EFE687D80" ID-DOI="http://doi.org/10.5281/zenodo.5793436" ID-Zenodo-Dep="5793436" httpUri="https://zenodo.org/record/5793436/files/figure.png" pageId="11" pageNumber="12" startId="11.[189,232,1818,1844]" targetBox="[189,1397,974,1778]" targetPageId="11">
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<paragraph id="D75236BAFFA7FFA5FF6B780EFE687D80" blockId="11.[189,1399,1818,2021]" pageId="11" pageNumber="12">
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<emphasis id="E599EAA8FFA7FFA5FF6B780EFED27D50" bold="true" box="[189,268,1818,1844]" pageId="11" pageNumber="12">Fig. 6.</emphasis>
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Median sections of cyrtoconic cephalopods from the Olenidsletta Member, Floian, Ordovician, Profilstranda section, Ny Friesland, Spitsbergen.
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<emphasis id="E599EAA8FFA7FFA5FCD47829FCC97D33" bold="true" box="[770,791,1853,1879]" pageId="11" pageNumber="12">A</emphasis>
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.
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<taxonomicName id="10ED4D39FFA7FFA5FCFE782AFB9C7D33" authority="Kröger & Pohle, 2021" authorityName="Kröger & Pohle" authorityYear="2021" box="[808,1090,1853,1879]" class="Cephalopoda" family="Bassleroceratidae" genus="Lawrenceoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ellesmerocerida" pageId="11" pageNumber="12" phylum="Mollusca" rank="species" species="ebenus" status="sp. nov.">
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<emphasis id="E599EAA8FFA7FFA5FCFE782AFB9C7D33" box="[808,1090,1853,1879]" italics="true" pageId="11" pageNumber="12">Lawrenceoceras ebenus</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="FEAA57D3FFA7FFA5FB9D782AFB747D3C" box="[1099,1194,1854,1880]" pageId="11" pageNumber="12" rank="species">sp. nov.</taxonomicNameLabel>
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, FMNH-P30335, holotype, from bed PO 123.3.
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<emphasis id="E599EAA8FFA7FFA5FD977875FD8B7D1F" bold="true" box="[577,597,1889,1915]" pageId="11" pageNumber="12">B</emphasis>
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.
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<taxonomicName id="10ED4D39FFA7FFA5FDBF7876FCAD7D1F" authority="Kröger & Pohle, 2021" authorityName="Kröger & Pohle" authorityYear="2021" box="[617,883,1889,1915]" class="Cephalopoda" family="Bassleroceratidae" genus="Lawrenceoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ellesmerocerida" pageId="11" pageNumber="12" phylum="Mollusca" rank="species" species="larus" status="sp. nov.">
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<emphasis id="E599EAA8FFA7FFA5FDBF7876FCAD7D1F" box="[617,883,1889,1915]" italics="true" pageId="11" pageNumber="12">Lawrenceoceras larus</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="FEAA57D3FFA7FFA5FC577875FC3B7D1F" box="[897,997,1889,1915]" pageId="11" pageNumber="12" rank="species">sp. nov.</taxonomicNameLabel>
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, FMNH-P30355, paratype, from bed PO 131.
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<emphasis id="E599EAA8FFA7FFA5FEBF7890FEA07DFA" bold="true" box="[361,382,1924,1950]" pageId="11" pageNumber="12">C</emphasis>
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.
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<emphasis id="E599EAA8FFA7FFA5FE427890FDE37DFA" box="[404,573,1924,1950]" italics="true" pageId="11" pageNumber="12">Vallhalloceras</emphasis>
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<taxonomicName id="10ED4D39FFA7FFA5FD9D7890FC6F7DFA" authority="Evans & King, 1990" authorityName="Evans & King" authorityYear="1990" box="[587,945,1924,1950]" class="Cephalopoda" family="Phthanoncoceratidae" genus="Valhalloceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Oncocerida" pageId="11" pageNumber="12" phylum="Mollusca" rank="species" species="floweri">
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<emphasis id="E599EAA8FFA7FFA5FD9D7890FD427DFA" box="[587,668,1924,1950]" italics="true" pageId="11" pageNumber="12">floweri</emphasis>
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<bibRefCitation id="B37C4B4BFFA7FFA5FD7C7890FC6F7DFA" author="Evans D. H. & King A. H." box="[682,945,1924,1950]" pageId="11" pageNumber="12" pagination="623 - 630" refId="ref46134" refString="Evans D. H. & King A. H. 1990. The affinities of early oncocerid nautiloids from the Lower Ordovician of Spitsbergen and Sweden. Palaeontology 33: 623 - 630." type="journal article" year="1990">Evans & King, 1990</bibRefCitation>
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</taxonomicName>
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, FMNH-P30340, from bed PO 131.
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<emphasis id="E599EAA8FFA7FFA5FF6B78B3FF0C7DA5" bold="true" box="[189,210,1959,1985]" pageId="11" pageNumber="12">D</emphasis>
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.
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<taxonomicName id="10ED4D39FFA7FFA5FF3478B3FE267DA5" authority="Kröger & Pohle, 2021" authorityName="Kröger & Pohle" authorityYear="2021" box="[226,504,1959,1985]" class="Cephalopoda" family="Rioceratidae" genus="Olenidslettoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tetrabranchia" pageId="11" pageNumber="12" phylum="Mollusca" rank="species" species="farmi" status="gen. et sp. nov.">
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<emphasis id="E599EAA8FFA7FFA5FF3478B3FE267DA5" box="[226,504,1959,1985]" italics="true" pageId="11" pageNumber="12">Olenidslettoceras farmi</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="FEAA57D3FFA7FFA5FDD678BCFD6B7DA6" box="[512,693,1960,1986]" pageId="11" pageNumber="12" rank="species">gen. et sp. nov.</taxonomicNameLabel>
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, FMNH-P30334, holotype, from bed PO 123.3. Scale bar = 5 mm for all figures.
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</paragraph>
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</caption>
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<paragraph id="D75236BAFFA0FFA2FF6B7E1DFE0F7B22" blockId="12.[189,1398,265,327]" pageId="12" pageNumber="13">form shallow hyponomic sinus at convex side of conch curvature; siphuncle small, 0.1 of conch height and near conch margin.</paragraph>
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</subSubSection>
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<subSubSection id="9FF76531FFA0FFA2FF6B7E7AFA8F7BD2" box="[189,1361,366,439]" pageId="12" pageNumber="13" type="etymology">
|
||
<paragraph id="D75236BAFFA0FFA2FF6B7E7AFE9A7BEC" blockId="12.[189,324,366,392]" box="[189,324,366,392]" pageId="12" pageNumber="13">
|
||
<heading id="8C1A81D6FFA0FFA2FF6B7E7AFE9A7BEC" bold="true" box="[189,324,366,392]" fontSize="11" level="3" pageId="12" pageNumber="13" reason="3">
|
||
<emphasis id="E599EAA8FFA0FFA2FF6B7E7AFE9A7BEC" bold="true" box="[189,324,366,392]" pageId="12" pageNumber="13">Etymology</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA0FFA2FF6B7E89FA8F7BD2" blockId="12.[189,1361,412,439]" box="[189,1361,412,439]" pageId="12" pageNumber="13">
|
||
From the gull genus
|
||
<emphasis id="E599EAA8FFA0FFA2FE667E89FE2A7BD2" box="[432,500,413,438]" italics="true" pageId="12" pageNumber="13">Larus</emphasis>
|
||
Linnaeus, 1758, a common companion during fieldwork at Profilstranda.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="9FF76531FFA0FFA2FF6B7ECAFC7F7900" pageId="12" pageNumber="13" type="materials_examined">
|
||
<paragraph id="D75236BAFFA0FFA2FF6B7ECAFEB27B93" blockId="12.[189,364,477,504]" box="[189,364,477,504]" pageId="12" pageNumber="13">
|
||
<heading id="8C1A81D6FFA0FFA2FF6B7ECAFEB27B93" bold="true" box="[189,364,477,504]" fontSize="11" level="3" pageId="12" pageNumber="13" reason="3">
|
||
<emphasis id="E599EAA8FFA0FFA2FF6B7ECAFEB27B93" bold="true" box="[189,364,477,504]" pageId="12" pageNumber="13">Type material</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA0FFA2FF3C7D18FE26782E" blockId="12.[189,504,524,586]" pageId="12" pageNumber="13">
|
||
<materialsCitation id="67853CE7FFA0FFA2FF3C7D18FE26782E" ID-GBIF-Occurrence="3421082344" collectionCode="FMNH-P" pageId="12" pageNumber="13" specimenCode="FMNH-P30351" specimenCount="1" typeStatus="holotype">
|
||
<emphasis id="E599EAA8FFA0FFA2FF3C7D18FE827842" bold="true" box="[234,348,524,550]" pageId="12" pageNumber="13">
|
||
<typeStatus id="08568818FFA0FFA2FF3C7D18FE827842" box="[234,348,524,550]" pageId="12" pageNumber="13" type="holotype">Holotype</typeStatus>
|
||
</emphasis>
|
||
<specimenCount id="C1EBFD33FFA0FFA2FF6B7D3BFEEF782D" box="[189,305,559,585]" pageId="12" pageNumber="13" type="generic">Specimen</specimenCount>
|
||
<specimenCode id="874B9EC1FFA0FFA2FEEE7D3BFE2B782E" box="[312,501,559,586]" collectionCode="FMNH-P" pageId="12" pageNumber="13">FMNH-P30351</specimenCode>
|
||
.
|
||
</materialsCitation>
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA0FFA2FF3C7D65FBDE78B5" blockId="12.[189,1398,625,722]" pageId="12" pageNumber="13">
|
||
<materialsCitation id="67853CE7FFA0FFA2FF3C7D65FBDE78B5" ID-GBIF-Occurrence="3421082327" collectionCode="P" location="Blackhillsian" pageId="12" pageNumber="13" specimenCode="FMNH-P30337, P30338, P30339, P30342, P30355" specimenCount="1" typeStatus="paratype">
|
||
<emphasis id="E599EAA8FFA0FFA2FF3C7D65FEB978EF" bold="true" box="[234,359,625,651]" pageId="12" pageNumber="13">
|
||
<typeStatus id="08568818FFA0FFA2FF3C7D65FEB978EF" box="[234,359,625,651]" pageId="12" pageNumber="13" type="paratype">Paratypes</typeStatus>
|
||
</emphasis>
|
||
<specimenCount id="C1EBFD33FFA0FFA2FF6B7D80FEAA78CA" box="[189,372,660,686]" pageId="12" pageNumber="13">Five specimens</specimenCount>
|
||
(
|
||
<specimenCode id="874B9EC1FFA0FFA2FE537D80FD9C78CA" box="[389,578,660,686]" pageId="12" pageNumber="13">FMNH-P30337</specimenCode>
|
||
,
|
||
<specimenCode id="874B9EC1FFA0FFA2FD867D80FD7378CA" box="[592,685,660,686]" pageId="12" pageNumber="13">P30338</specimenCode>
|
||
,
|
||
<specimenCode id="874B9EC1FFA0FFA2FD6C7D80FCC978CA" box="[698,791,660,686]" pageId="12" pageNumber="13">P30339</specimenCode>
|
||
,
|
||
<specimenCode id="874B9EC1FFA0FFA2FCF27D80FC5F78CA" box="[804,897,660,686]" pageId="12" pageNumber="13">P30342</specimenCode>
|
||
,
|
||
<specimenCode id="874B9EC1FFA0FFA2FC587D80FC3478CB" box="[910,1002,660,687]" pageId="12" pageNumber="13">P30355</specimenCode>
|
||
)
|
||
<locationDeviation id="C6E02F98FFA0FFA2FC2D7D80FD2978B6" pageId="12" pageNumber="13">
|
||
from bed PO
|
||
<quantity id="10159B5FFFA0FFA2FB497D80FAF978CA" box="[1183,1319,660,686]" metricMagnitude="5" metricUnit="m" metricValue="1.3112799999999998" pageId="12" pageNumber="13" unit="m" value="131128.0">131, 128 m</quantity>
|
||
above base of Olenidsletta Member,
|
||
<date id="A353107AFFA0FFA2FDC97DA3FD9D78B5" box="[543,579,695,721]" pageId="12" pageNumber="13">V2</date>
|
||
b trilobite zone
|
||
</locationDeviation>
|
||
,
|
||
<location id="D2326061FFA0FFA2FCD27DA3FC7C78B5" LSID="urn:lsid:plazi:treatment:5F4487ACFFA7FFA3FDB07D9DFE857F79:D2326061FFA0FFA2FCD27DA3FC7C78B5" box="[772,930,695,721]" name="Blackhillsian" pageId="12" pageNumber="13">Blackhillsian</location>
|
||
,
|
||
<location id="D2326061FFA0FFA2FC7B7DA3FC2278B5" LSID="urn:lsid:plazi:treatment:5F4487ACFFA7FFA3FDB07D9DFE857F79:D2326061FFA0FFA2FC7B7DA3FC2278B5" box="[941,1020,695,721]" name="Floian" pageId="12" pageNumber="13">Floian</location>
|
||
.
|
||
</materialsCitation>
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA0FFA2FF6B7DEDFE257976" blockId="12.[189,507,760,787]" box="[189,507,760,787]" pageId="12" pageNumber="13">
|
||
<heading id="8C1A81D6FFA0FFA2FF6B7DEDFE257976" bold="true" box="[189,507,760,787]" fontSize="11" level="3" pageId="12" pageNumber="13" reason="3">
|
||
<emphasis id="E599EAA8FFA0FFA2FF6B7DEDFE257976" bold="true" box="[189,507,760,787]" pageId="12" pageNumber="13">Type locality and horizon</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA0FFA2FF6B7C33FC7F7900" blockId="12.[189,1398,807,869]" pageId="12" pageNumber="13">
|
||
Profilstranda section, adjacent to Hinlopenstretet, Spitsbergen, bed Po123.3,
|
||
<quantity id="10159B5FFFA0FFA2FB8C7C33FB617926" box="[1114,1215,807,834]" metricMagnitude="2" metricUnit="m" metricValue="1.2029999999999998" pageId="12" pageNumber="13" unit="m" value="120.3">120.3 m</quantity>
|
||
, above base of Olenidsletta Member,
|
||
<collectionCode id="B1FCAE7FFFA0FFA2FE147C5EFE067900" box="[450,472,842,868]" country="Canada" lsid="urn:lsid:biocol.org:col:13946" name="Royal British Columbia Museum - Herbarium" pageId="12" pageNumber="13" type="Museum">V</collectionCode>
|
||
2a trilobite zone, Blackhillsian, Floian.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<caption id="83926632FFA0FFA2FF6B7822FC787DB9" ID-DOI="http://doi.org/10.5281/zenodo.5793438" ID-Zenodo-Dep="5793438" httpUri="https://zenodo.org/record/5793438/files/figure.png" pageId="12" pageNumber="13" startId="12.[189,232,1846,1872]" targetBox="[189,1398,1029,1808]" targetPageId="12">
|
||
<paragraph id="D75236BAFFA0FFA2FF6B7822FC787DB9" blockId="12.[189,1399,1846,2014]" pageId="12" pageNumber="13">
|
||
<emphasis id="E599EAA8FFA0FFA2FF6B7822FED27D35" bold="true" box="[189,268,1846,1873]" pageId="12" pageNumber="13">Fig. 7.</emphasis>
|
||
Details of siphuncle and septal necks, median sections of cyrtoconic ellesmeroceratids from the Olenidsletta Member, Floian, Ordovician, Profilstranda section, Ny Friesland, Spitsbergen. Note the loxochoanitic septal necks and the concave siphuncular segments.
|
||
<emphasis id="E599EAA8FFA0FFA2FC087869FC2F7DF3" bold="true" box="[990,1009,1917,1943]" pageId="12" pageNumber="13">A</emphasis>
|
||
.
|
||
<taxonomicName id="10ED4D39FFA0FFA2FBD4786AFAD77DF3" authority="Kröger & Pohle, 2021" authorityName="Kröger & Pohle" authorityYear="2021" box="[1026,1289,1917,1943]" class="Cephalopoda" family="Bassleroceratidae" genus="Lawrenceoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ellesmerocerida" pageId="12" pageNumber="13" phylum="Mollusca" rank="species" species="larus" status="sp. nov.">
|
||
<emphasis id="E599EAA8FFA0FFA2FBD4786AFAD77DF3" box="[1026,1289,1917,1943]" italics="true" pageId="12" pageNumber="13">Lawrenceoceras larus</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="FEAA57D3FFA0FFA2FAC5786AFAAC7DFC" box="[1299,1394,1918,1944]" pageId="12" pageNumber="13" rank="species">sp. nov.</taxonomicNameLabel>
|
||
, FMNH-P30355, paratype, from bed PO 131.
|
||
<emphasis id="E599EAA8FFA0FFA2FD2778B4FCDB7DDE" bold="true" box="[753,773,1952,1978]" pageId="12" pageNumber="13">B</emphasis>
|
||
.
|
||
<taxonomicName id="10ED4D39FFA0FFA2FCCE78B5FBE87DDE" authority="Kröger & Pohle, 2021" authorityName="Kröger & Pohle" authorityYear="2021" box="[792,1078,1952,1978]" class="Cephalopoda" family="Bassleroceratidae" genus="Lawrenceoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ellesmerocerida" pageId="12" pageNumber="13" phylum="Mollusca" rank="species" species="ebenus" status="sp. nov.">
|
||
<emphasis id="E599EAA8FFA0FFA2FCCE78B5FBE87DDE" box="[792,1078,1952,1978]" italics="true" pageId="12" pageNumber="13">Lawrenceoceras ebenus</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="FEAA57D3FFA0FFA2FB9278B5FB787DDF" box="[1092,1190,1953,1979]" pageId="12" pageNumber="13" rank="species">sp. nov.</taxonomicNameLabel>
|
||
, FMNH-P30335, holotype, from bed PO 123.3. Scale bar = 1 mm for all figures.
|
||
</paragraph>
|
||
</caption>
|
||
<subSubSection id="9FF76531FFA1FFA3FF6B7E1CFE857F79" pageId="13" pageNumber="14" type="description">
|
||
<paragraph id="D75236BAFFA1FFA3FF6B7E1CFE907B46" blockId="13.[189,334,264,290]" box="[189,334,264,290]" pageId="13" pageNumber="14">
|
||
<heading id="8C1A81D6FFA1FFA3FF6B7E1CFE907B46" bold="true" box="[189,334,264,290]" fontSize="11" level="3" pageId="13" pageNumber="14" reason="3">
|
||
<emphasis id="E599EAA8FFA1FFA3FF6B7E1CFE907B46" bold="true" box="[189,334,264,290]" pageId="13" pageNumber="14">Description</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA1FFA3FF6B7E23FDB47BBA" blockId="13.[188,1400,311,478]" pageId="13" pageNumber="14">
|
||
The
|
||
<typeStatus id="08568818FFA1FFA3FF257E23FE847B35" box="[243,346,311,337]" pageId="13" pageNumber="14" type="holotype">holotype</typeStatus>
|
||
is a fragment of a curved phragmocone with a length of
|
||
<quantity id="10159B5FFFA1FFA3FBD47E23FB877B36" box="[1026,1113,311,338]" metricMagnitude="-2" metricUnit="m" metricValue="6.5" pageId="13" pageNumber="14" unit="mm" value="65.0">65 mm</quantity>
|
||
, its width expands from
|
||
<quantity id="10159B5FFFA1FFA3FF687E4EFE587B11" box="[190,390,346,373]" metricMagnitude="-2" metricUnit="m" metricValue="1.5" metricValueMax="1.65" metricValueMin="1.35" pageId="13" pageNumber="14" unit="mm" value="15.0" valueMax="16.5" valueMin="13.5">13.5 to 16.5 mm</quantity>
|
||
over a length of ca
|
||
<quantity id="10159B5FFFA1FFA3FDAA7E4EFD0F7B11" box="[636,721,346,373]" metricMagnitude="-2" metricUnit="m" metricValue="4.8" pageId="13" pageNumber="14" unit="mm" value="48.0">48 mm</quantity>
|
||
(angle of expansion ca 4°). The conch surface is almost smooth, ornamented only with faint irregularly spaced growth lines, which form a very shallow sinus on the convex side of the conch curvature and a broad and shallow, but distinctive hyponomic sinus at the concave side of the conch curvature.
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA1FFA3FF6B7D11FC6D7802" blockId="13.[189,1398,517,614]" pageId="13" pageNumber="14">
|
||
The conch cross section is depressed (rW = 1.16–1.23) with the dorsum slightly flattened compared with the ventral side. Ten measurements of the relative conch width including the additional material result in a mean value of rW = 1.3 (1
|
||
<superScript id="20989BF2FFA1FFA3FDF07D5FFDEF783D" attach="right" box="[550,561,587,601]" fontSize="6" pageId="13" pageNumber="14">st</superScript>
|
||
–3
|
||
<superScript id="20989BF2FFA1FFA3FD987D5FFD82783D" attach="left" box="[590,604,587,601]" fontSize="6" pageId="13" pageNumber="14">rd</superScript>
|
||
quantile =1.24–1.33, n =10).
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA1FFA3FF6B7D99FC9D7889" blockId="13.[188,1398,653,750]" pageId="13" pageNumber="14">
|
||
The septa are narrowly spaced, ca 10 chambers occur per distance similar to corresponding conch height and the sutures form a shallow lobe at the lateral flanks (rCL = 0.1). The septal curvature is relatively strong, ca
|
||
<quantity id="10159B5FFFA1FFA3FEE07DC0FE46788A" box="[310,408,724,750]" metricMagnitude="-3" metricUnit="m" metricValue="2.5" metricValueMax="3.0" metricValueMin="2.0" pageId="13" pageNumber="14" unit="mm" value="2.5" valueMax="3.0" valueMin="2.0">2–3 mm</quantity>
|
||
at the adapical end of the specimen.
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA1FFA3FF6B7C01FB657937" blockId="13.[189,1399,789,851]" pageId="13" pageNumber="14">
|
||
The septal perforation is positioned almost at the margin of the conch on the convex side of the conch curvature and has a diameter of
|
||
<quantity id="10159B5FFFA1FFA3FDE07C2CFD4E7937" box="[566,656,824,851]" metricMagnitude="-3" metricUnit="m" metricValue="1.5" pageId="13" pageNumber="14" unit="mm" value="1.5">1.5 mm</quantity>
|
||
at a position where the conch height is
|
||
<quantity id="10159B5FFFA1FFA3FBB77C2CFB697937" box="[1121,1207,824,851]" metricMagnitude="-2" metricUnit="m" metricValue="1.3" pageId="13" pageNumber="14" unit="mm" value="13.0">13 mm</quantity>
|
||
.
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA1FFA3FF6B7C6EFCF779BE" blockId="13.[189,1399,889,987]" pageId="13" pageNumber="14">In specimen FMNH-P30355 details of the siphuncle and septal necks are preserved. There, the connecting ring is thickened with concave segments and the septal necks are short loxochoanitic. No endosiphuncular and/or cameral deposits are known.</paragraph>
|
||
<paragraph id="D75236BAFFA1FFA3FF6B7B15FE867E7F" blockId="13.[189,344,1025,1051]" box="[189,344,1025,1051]" pageId="13" pageNumber="14">
|
||
<heading id="8C1A81D6FFA1FFA3FF6B7B15FE867E7F" bold="true" box="[189,344,1025,1051]" fontSize="11" level="3" pageId="13" pageNumber="14" reason="3">
|
||
<emphasis id="E599EAA8FFA1FFA3FF6B7B15FE867E7F" bold="true" box="[189,344,1025,1051]" pageId="13" pageNumber="14">Comparison</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA1FFA3FF6B7B24FE857F79" blockId="13.[188,1400,1072,1310]" pageId="13" pageNumber="14">
|
||
The new species differs from other species of
|
||
<taxonomicName id="10ED4D39FFA1FFA3FD057B25FC4A7E2E" authorityName="Ulrich, Foerste, Miller & Unklesbay" authorityYear="1944" box="[723,916,1073,1098]" class="Cephalopoda" family="Bassleroceratidae" genus="Lawrenceoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ellesmerocerida" pageId="13" pageNumber="14" phylum="Mollusca" rank="genus">
|
||
<emphasis id="E599EAA8FFA1FFA3FD057B25FC4A7E2E" box="[723,916,1073,1098]" italics="true" pageId="13" pageNumber="14">Lawrenceoceras</emphasis>
|
||
</taxonomicName>
|
||
in having a relatively low angle of conch width expansion; it also differs from the
|
||
<typeStatus id="08568818FFA1FFA3FD737B40FD067E0A" box="[677,728,1108,1134]" pageId="13" pageNumber="14">type</typeStatus>
|
||
species in having a more depressed conch cross section (rW in
|
||
<taxonomicName id="10ED4D39FFA1FFA3FEC07B63FE557EF4" authorityName="Ulrich, Foerste, Miller & Unklesbay" authorityYear="1944" box="[278,395,1142,1169]" class="Cephalopoda" family="Bassleroceratidae" genus="Lawrenceoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ellesmerocerida" pageId="13" pageNumber="14" phylum="Mollusca" rank="species" species="collinsi">
|
||
<emphasis id="E599EAA8FFA1FFA3FEC07B63FEFB7EF4" box="[278,293,1143,1168]" italics="true" pageId="13" pageNumber="14">L</emphasis>
|
||
.
|
||
<emphasis id="E599EAA8FFA1FFA3FEE37B62FE557EF4" box="[309,395,1142,1168]" italics="true" pageId="13" pageNumber="14">collinsi</emphasis>
|
||
</taxonomicName>
|
||
is ca 1.06).
|
||
<taxonomicName id="10ED4D39FFA1FFA3FDF27B63FBA87EF5" authority="(Whitfield, 1886)" baseAuthorityName="Whitfield" baseAuthorityYear="1886" box="[548,1142,1142,1169]" class="Cephalopoda" family="Bassleroceratidae" genus="Lawrenceoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ellesmerocerida" pageId="13" pageNumber="14" phylum="Mollusca" rank="species" species="confertissimum">
|
||
<emphasis id="E599EAA8FFA1FFA3FDF27B63FC7F7EF4" box="[548,929,1142,1168]" italics="true" pageId="13" pageNumber="14">Lawrenceoceras confertissimum</emphasis>
|
||
(Whitfield, 1886)
|
||
</taxonomicName>
|
||
from the Fort Cassin Formation,
|
||
<collectingRegion id="1529F858FFA1FFA3FE9E7B8EFE187ED7" box="[328,454,1177,1204]" country="United States of America" name="New York" pageId="13" pageNumber="14">New York</collectingRegion>
|
||
,
|
||
<collectingCountry id="AFFA762AFFA1FFA3FE057B8EFDD27ED0" box="[467,524,1178,1204]" name="United States of America" pageId="13" pageNumber="14">USA</collectingCountry>
|
||
has a larger rate of expansion of the conch width (12.5° compared with 4° in
|
||
<taxonomicName id="10ED4D39FFA1FFA3FED47BAAFE817EB3" authority="Kröger & Pohle, 2021" authorityName="Kröger & Pohle" authorityYear="2021" box="[258,351,1213,1239]" class="Cephalopoda" family="Bassleroceratidae" genus="Lawrenceoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ellesmerocerida" pageId="13" pageNumber="14" phylum="Mollusca" rank="species" species="larus" status="sp. nov.">
|
||
<emphasis id="E599EAA8FFA1FFA3FED47BAAFE817EB3" box="[258,351,1213,1239]" italics="true" pageId="13" pageNumber="14">L. larus</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="FEAA57D3FFA1FFA3FEB07BA9FE197EB3" box="[358,455,1213,1239]" pageId="13" pageNumber="14" rank="species">sp. nov.</taxonomicNameLabel>
|
||
).
|
||
<taxonomicName id="10ED4D39FFA1FFA3FE087BAAFC207EB3" authority="(Ulrich et al., 1944)" baseAuthorityName="Ulrich" baseAuthorityYear="1944" box="[478,1022,1213,1239]" class="Cephalopoda" family="Bassleroceratidae" genus="Lawrenceoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ellesmerocerida" pageId="13" pageNumber="14" phylum="Mollusca" rank="species" species="australe">
|
||
<emphasis id="E599EAA8FFA1FFA3FE087BAAFCD67EB3" box="[478,776,1213,1239]" italics="true" pageId="13" pageNumber="14">Lawrenceoceras australe</emphasis>
|
||
(
|
||
<bibRefCitation id="B37C4B4BFFA1FFA3FCC17BA9FC287EB3" author="Ulrich E. O. & Foerste A. F. & Miller A. K. & Unklesbay A. G." box="[791,1014,1213,1239]" pageId="13" pageNumber="14" pagination="1 - 226" refId="ref50494" refString="Ulrich E. O., Foerste A. F., Miller A. K. & Unklesbay A. G. 1944. Ozarkian and Canadian cephalopods. Part III: Longicones and summary. Geological Society of America Special Papers 58: 1 - 226. https: // doi. org / 10.1130 / SPE 58" type="journal article" year="1944">
|
||
Ulrich
|
||
<emphasis id="E599EAA8FFA1FFA3FCB97BAAFC747EB3" box="[879,938,1213,1239]" italics="true" pageId="13" pageNumber="14">et al.</emphasis>
|
||
, 1944
|
||
</bibRefCitation>
|
||
)
|
||
</taxonomicName>
|
||
from the Odenville Limestone,
|
||
<collectingRegion id="1529F858FFA1FFA3FF697BF4FEF27E9E" box="[191,300,1248,1274]" country="United States of America" name="Alabama" pageId="13" pageNumber="14">Alabama</collectingRegion>
|
||
,
|
||
<collectingCountry id="AFFA762AFFA1FFA3FEE17BF4FEAE7E9E" box="[311,368,1248,1274]" name="United States of America" pageId="13" pageNumber="14">USA</collectingCountry>
|
||
differs in having a more depressed conch (rW = 1.34) with a distinctive triangular conch cross section.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |