289 lines
35 KiB
XML
289 lines
35 KiB
XML
<document id="931F68141066FC3FAC2894B48C514AEA" 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="5F4487ACFFE9FFE9FEB97BE1FDEA795D" 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="Trocholitoceras juvenicostatum Ulrich, Foerste, Miller & Furnish 1942" docType="treatment" docVersion="8" lastPageNumber="72" masterDocId="A37DFFD4FFACFFAEFFD67F14FFDE7A64" masterDocTitle="Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities" masterLastPageNumber="102" masterPageNumber="1" pageNumber="70" updateTime="1699472839061" updateUser="ExternalLinkService" 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="F243BE044C4AB33FF982F2593AA32546">Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities</mods:title>
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<mods:namePart id="AD74D7BE24ADD8AE0DA2A9FF037D0FA1">Kröger, Björn</mods:namePart>
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<mods:affiliation id="1FFECEA29FD533AE6DB5F66DC3C9C45F">Finnish Museum of Natural History, University of Helsinki, PO Box 44, FI- 00014 Helsinki, Finland.</mods:affiliation>
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<mods:nameIdentifier id="5FDFB375EBD465C087E7520EAC138A80" type="email">bjorn.kroger@helsinki.fi</mods:nameIdentifier>
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<mods:namePart id="599D588AAA8304397726DC3242B972F8">Pohle, Alexander</mods:namePart>
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<mods:affiliation id="16C1CCCD77E85147C2E49AEAFE911999">Paläontologisches Institut und Museum, University of Zurich, Zurich, Switzerland.</mods:affiliation>
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<mods:nameIdentifier id="E28FF5103E169663783C94905E6F9008" type="email">alexander.pohle@pim.uzh.ch</mods:nameIdentifier>
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<mods:title id="54E2B3939F90024D1A93A92E9528E7C8">European Journal of Taxonomy</mods:title>
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<mods:part id="01697A048DB8117C47D708DAD935C5AE">
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<mods:date id="BCD77DA15660420A87D788EBE854C124">2021</mods:date>
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<subSubSection id="9FF76531FFE9FFEBFEB97BE1FB1A7F6B" box="[367,1220,1269,1296]" pageId="69" pageNumber="70" type="nomenclature">
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<paragraph id="D75236BAFFE9FFEBFEB97BE1FB1A7F6B" blockId="69.[367,1220,1269,1331]" box="[367,1220,1269,1296]" pageId="69" pageNumber="70">
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<heading id="8C1A81D6FFE9FFEBFEB97BE1FB1A7F6B" box="[367,1220,1269,1296]" centered="true" fontSize="11" level="2" pageId="69" pageNumber="70" reason="2">
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<taxonomicName id="10ED4D39FFE9FFEBFEB97BE1FB1A7F6B" authority="Ulrich, Foerste, Miller & Furnish, 1942" authorityName="Ulrich, Foerste, Miller & Furnish" authorityYear="1942" box="[367,1220,1269,1296]" class="Cephalopoda" family="Trocholitidae" genus="Trocholitoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tarphycerida" pageId="69" pageNumber="70" phylum="Mollusca" rank="species" species="juvenicostatum">
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<emphasis id="E599EAA8FFE9FFEBFEB97BE1FD327F6B" bold="true" box="[367,748,1269,1296]" italics="true" pageId="69" pageNumber="70">Trocholitoceras juvenicostatum</emphasis>
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<bibRefCitation id="B37C4B4BFFE9FFEBFD227BE1FB1A7F6B" author="Ulrich E. O. & Foerste A. F. & Miller A. K. & Furnish W. M." box="[756,1220,1269,1296]" pageId="69" pageNumber="70" pagination="1 - 157" refId="ref50378" refString="Ulrich E. O., Foerste A. F., Miller A. K. & Furnish W. M. 1942. Ozarkian and Canadian cephalopods: Part I: Nautilicones. Geological Society of America Special Papers 37: 1 - 157. https: // doi. org / 10.1130 / SPE 37 - p 1" type="journal article" year="1942">Ulrich, Foerste, Miller & Furnish, 1942</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="9FF76531FFE9FFEBFD187A0CFCBB7F57" box="[718,869,1304,1331]" pageId="69" pageNumber="70" type="description">
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<paragraph id="D75236BAFFE9FFEBFD187A0CFCBB7F57" blockId="69.[367,1220,1269,1331]" box="[718,869,1304,1331]" pageId="69" pageNumber="70">
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<figureCitation id="4FD62A3FFFE9FFEBFD187A0CFCE27F57" box="[718,828,1304,1331]" captionStart="Fig" captionStartId="64.[189,232,1810,1836]" captionTargetBox="[211,1391,1364,1765]" captionTargetId="figure-314@64.[189,1398,1357,1773]" captionTargetPageId="64" captionText="Fig. 44. Cross sections of coiled cephalopods from the Olenidsletta Member, Floian, Ordovician, Profilstranda section, Ny Friesland, Spitsbergen with details of siphuncular position and impression zone of conch. A. Deltoceras beluga sp. nov., FMNH-P30322, from bed PO 07. B. Litoceras profilbekkenense sp. nov, FMNH-P30329, holotype, from bed PO 131, C. Trocholitoceras juvenicostatum Ulrich et al., 1942, FMNH-P30324, from bed PO 131. D. Trocholitoceras walcotti Hyatt, 1894, FMNH-P30328, from bed PO 131. Scale bars = 10 mm." figureDoi="http://doi.org/10.5281/zenodo.5793558" httpUri="https://zenodo.org/record/5793558/files/figure.png" pageId="69" pageNumber="70">Figs 44C</figureCitation>
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,
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<figureCitation id="4FD62A3FFFE9FFEBFC9E7A0DFCBB7F57" box="[840,869,1305,1331]" captionStart="Fig" captionStartId="70.[189,232,1852,1878]" captionTargetBox="[195,1398,791,1812]" captionTargetId="figure-191@70.[189,1398,788,1812]" captionTargetPageId="70" captionText="Fig. 48. Trocholitoceras juvenicostatum Ulrich, Foerste, Miller & Furnish, 1942, from bed PO 131, Olenidsletta Member, Floian, Ordovician, Profilstranda section, Ny Friesland, Spitsbergen. A–B. Specimen FMNH-P30323. A. Adoral view with siphuncular perforation preserved. B. Lateral view of fragment of body chamber with outer shell and ornamentation partly preserved. C. Specimen FMNH-P30330, lateral view with distinctive ribs. Scale bar = 20 mm for all figures." figureDoi="http://doi.org/10.5281/zenodo.5793568" httpUri="https://zenodo.org/record/5793568/files/figure.png" pageId="69" pageNumber="70">48</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection id="9FF76531FFE9FFEBFF6B7A4EFE477FF3" pageId="69" pageNumber="70" type="reference_group">
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<paragraph id="D75236BAFFE9FFEBFF6B7A4EFE477FF3" blockId="69.[189,1399,1370,1432]" pageId="69" pageNumber="70">
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<treatmentCitationGroup id="F7FD1194FFE9FFEBFF6B7A4EFE477FF3" pageId="69" pageNumber="70">
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<treatmentCitation id="564C10ABFFE9FFEBFF6B7A4EFBF07F10" author="Ulrich E. O. & Foerste A. F. & Miller A. K. & Furnish W. M." box="[189,1070,1370,1396]" page="82" pageId="69" pageNumber="70" year="1942">
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<taxonomicName id="10ED4D39FFE9FFEBFF6B7A4EFBF07F10" authority="Ulrich, Foerste, Miller & Furnish, 1942: 82" authorityName="Ulrich, Foerste, Miller & Furnish" authorityPageNumber="82" authorityYear="1942" box="[189,1070,1370,1396]" class="Cephalopoda" family="Trocholitidae" genus="Trocholitoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tarphycerida" pageId="69" pageNumber="70" phylum="Mollusca" rank="species" species="juvenicostatum">
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||
<emphasis id="E599EAA8FFE9FFEBFF6B7A4EFDF07F10" box="[189,558,1370,1396]" italics="true" pageId="69" pageNumber="70">Trocholitoceras juvenicostatum</emphasis>
|
||
<bibRefCitation id="B37C4B4BFFE9FFEBFDE27A4EFBF07F10" author="Ulrich E. O. & Foerste A. F. & Miller A. K. & Furnish W. M." box="[564,1070,1370,1396]" pageId="69" pageNumber="70" pagination="1 - 157" refId="ref50378" refString="Ulrich E. O., Foerste A. F., Miller A. K. & Furnish W. M. 1942. Ozarkian and Canadian cephalopods: Part I: Nautilicones. Geological Society of America Special Papers 37: 1 - 157. https: // doi. org / 10.1130 / SPE 37 - p 1" type="journal article" year="1942">Ulrich, Foerste, Miller & Furnish, 1942: 82</bibRefCitation>
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</taxonomicName>
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||
</treatmentCitation>
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||
, pl. 51 fig. 6, pl. 53 figs 5–6, pl. 56 figs 1–3.
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||
</treatmentCitationGroup>
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||
</paragraph>
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||
</subSubSection>
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||
<subSubSection id="9FF76531FFE9FFEBFF6B7AAAFCF17C2A" pageId="69" pageNumber="70" type="diagnosis">
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||
<paragraph id="D75236BAFFE9FFEBFF6B7AAAFEE87FBC" blockId="69.[189,310,1470,1496]" box="[189,310,1470,1496]" pageId="69" pageNumber="70">
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<heading id="8C1A81D6FFE9FFEBFF6B7AAAFEE87FBC" bold="true" box="[189,310,1470,1496]" fontSize="11" level="3" pageId="69" pageNumber="70" reason="3">
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<emphasis id="E599EAA8FFE9FFEBFF6B7AAAFEE87FBC" bold="true" box="[189,310,1470,1496]" pageId="69" pageNumber="70">Diagnosis</emphasis>
|
||
</heading>
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||
</paragraph>
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||
<paragraph id="D75236BAFFE9FFEBFF6B7AF9FCF17C2A" blockId="69.[189,1399,1517,1614]" pageId="69" pageNumber="70">
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<taxonomicName id="10ED4D39FFE9FFEBFF6B7AF9FEA87C63" authorityName="Hyatt" authorityYear="1894" box="[189,374,1517,1543]" class="Cephalopoda" family="Trocholitidae" genus="Trocholitoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tarphycerida" pageId="69" pageNumber="70" phylum="Mollusca" rank="genus">
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||
<emphasis id="E599EAA8FFE9FFEBFF6B7AF9FEA87C63" box="[189,374,1517,1543]" italics="true" pageId="69" pageNumber="70">Trocholitoceras</emphasis>
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||
</taxonomicName>
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with relatively narrow whorls and prominent ribs throughout entire growth; sutures directly transverse with dorsal lobe; siphuncle located close to the dorsal wall in mature portions of the phragmocone (compiled from
|
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<bibRefCitation id="B37C4B4BFFE9FFEBFDF57927FCFC7C2A" author="Ulrich E. O. & Foerste A. F. & Miller A. K. & Furnish W. M." box="[547,802,1587,1614]" pageId="69" pageNumber="70" pagination="1 - 157" refId="ref50378" refString="Ulrich E. O., Foerste A. F., Miller A. K. & Furnish W. M. 1942. Ozarkian and Canadian cephalopods: Part I: Nautilicones. Geological Society of America Special Papers 37: 1 - 157. https: // doi. org / 10.1130 / SPE 37 - p 1" type="journal article" year="1942">
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||
Ulrich
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||
<emphasis id="E599EAA8FFE9FFEBFDA37920FD6E7C29" box="[629,688,1587,1613]" italics="true" pageId="69" pageNumber="70">et al.</emphasis>
|
||
1942: 82
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||
</bibRefCitation>
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||
).
|
||
</paragraph>
|
||
</subSubSection>
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||
<subSubSection id="9FF76531FFE9FFEBFF6B7961FECE7D60" pageId="69" pageNumber="70" type="materials_examined">
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<paragraph id="D75236BAFFE9FFEBFF6B7961FE747CEB" blockId="69.[189,426,1653,1679]" box="[189,426,1653,1679]" pageId="69" pageNumber="70">
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||
<heading id="8C1A81D6FFE9FFEBFF6B7961FE747CEB" bold="true" box="[189,426,1653,1679]" fontSize="11" level="3" pageId="69" pageNumber="70" reason="3">
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||
<emphasis id="E599EAA8FFE9FFEBFF6B7961FE747CEB" bold="true" box="[189,426,1653,1679]" pageId="69" pageNumber="70">Material examined</emphasis>
|
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</heading>
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</paragraph>
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<paragraph id="D75236BAFFE9FFEBFF6B79B7FECE7D60" blockId="69.[189,1399,1699,1796]" pageId="69" pageNumber="70">
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<materialsCitation id="67853CE7FFE9FFEBFF6B79B7FECE7D60" ID-GBIF-Occurrence="3421082335" collectionCode="P" location="Ny Friesland" pageId="69" pageNumber="70" specimenCode="FMNH-P30323, P30324, P30330, P30332, P30344, P30347" specimenCount="1">
|
||
<specimenCount id="C1EBFD33FFE9FFEBFF6B79B7FEB47CD9" box="[189,362,1699,1725]" pageId="69" pageNumber="70">Six specimens</specimenCount>
|
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(
|
||
<specimenCode id="874B9EC1FFE9FFEBFEAB79B0FDE57CDA" box="[381,571,1700,1726]" pageId="69" pageNumber="70">FMNH-P30323</specimenCode>
|
||
,
|
||
<specimenCode id="874B9EC1FFE9FFEBFD9C79B0FD797CDA" box="[586,679,1700,1726]" pageId="69" pageNumber="70">P30324</specimenCode>
|
||
,
|
||
<specimenCode id="874B9EC1FFE9FFEBFD6179B0FCCD7CDA" box="[695,787,1700,1726]" pageId="69" pageNumber="70">P30330</specimenCode>
|
||
,
|
||
<specimenCode id="874B9EC1FFE9FFEBFCF579B0FC5E7CDA" box="[803,896,1700,1726]" pageId="69" pageNumber="70">P30332</specimenCode>
|
||
,
|
||
<specimenCode id="874B9EC1FFE9FFEBFC4679B0FC337CDA" box="[912,1005,1700,1726]" pageId="69" pageNumber="70">P30344</specimenCode>
|
||
,
|
||
<specimenCode id="874B9EC1FFE9FFEBFC2B79B0FB857CDA" box="[1021,1115,1700,1726]" pageId="69" pageNumber="70">P30347</specimenCode>
|
||
),
|
||
<geologicalTimeScale id="A5CDB611FFE9FFEBFBA579B7FECD7C85" pageId="69" pageNumber="70">all from Profilstranda section</geologicalTimeScale>
|
||
,
|
||
<location id="D2326061FFE9FFEBFEC979D3FE647C85" LSID="urn:lsid:plazi:treatment:5F4487ACFFE9FFE9FEB97BE1FDEA795D:D2326061FFE9FFEBFEC979D3FE647C85" box="[287,442,1735,1761]" name="Ny Friesland" pageId="69" pageNumber="70">Ny Friesland</location>
|
||
,
|
||
<location id="D2326061FFE9FFEBFE1379D3FDEE7C85" LSID="urn:lsid:plazi:treatment:5F4487ACFFE9FFE9FEB97BE1FDEA795D:D2326061FFE9FFEBFE1379D3FDEE7C85" box="[453,560,1735,1761]" name="Svalbard" pageId="69" pageNumber="70">Svalbard</location>
|
||
,
|
||
<locationDeviation id="C6E02F98FFE9FFEBFDEA79D3FB177C85" box="[572,1225,1735,1761]" pageId="69" pageNumber="70">
|
||
bed PO
|
||
<quantity id="10159B5FFFE9FFEBFD4D79D3FCC17C85" box="[667,799,1735,1761]" metricMagnitude="5" metricUnit="m" metricValue="1.3112799999999998" pageId="69" pageNumber="70" unit="m" value="131128.0">131, 128 m</quantity>
|
||
above base of Olenidsletta Member
|
||
</locationDeviation>
|
||
,
|
||
<location id="D2326061FFE9FFEBFB0279D3FAAC7C85" LSID="urn:lsid:plazi:treatment:5F4487ACFFE9FFE9FEB97BE1FDEA795D:D2326061FFE9FFEBFB0279D3FAAC7C85" box="[1236,1394,1735,1761]" name="Blackhillsian" pageId="69" pageNumber="70">Blackhillsian</location>
|
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,
|
||
<location id="D2326061FFE9FFEBFF6B79FEFED27D60" LSID="urn:lsid:plazi:treatment:5F4487ACFFE9FFE9FEB97BE1FDEA795D:D2326061FFE9FFEBFF6B79FEFED27D60" box="[189,268,1770,1796]" name="Floian" pageId="69" pageNumber="70">Floian</location>
|
||
.
|
||
</materialsCitation>
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="9FF76531FFE9FFE9FF6B783FFB117B23" lastPageId="71" lastPageNumber="72" pageId="69" pageNumber="70" type="description">
|
||
<paragraph id="D75236BAFFE9FFEBFF6B783FFE907D21" blockId="69.[189,334,1835,1861]" box="[189,334,1835,1861]" pageId="69" pageNumber="70">
|
||
<heading id="8C1A81D6FFE9FFEBFF6B783FFE907D21" bold="true" box="[189,334,1835,1861]" fontSize="11" level="3" pageId="69" pageNumber="70" reason="3">
|
||
<emphasis id="E599EAA8FFE9FFEBFF6B783FFE907D21" bold="true" box="[189,334,1835,1861]" pageId="69" pageNumber="70">Description</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFE9FFEBFF6B784EFAA77DB9" blockId="69.[189,1401,1882,2014]" pageId="69" pageNumber="70">
|
||
Specimen FMNH-P30323 (
|
||
<figureCitation id="4FD62A3FFFE9FFEBFDD0784EFD487D10" box="[518,662,1882,1908]" captionStart="Fig" captionStartId="70.[189,232,1852,1878]" captionTargetBox="[195,1398,791,1812]" captionTargetId="figure-191@70.[189,1398,788,1812]" captionTargetPageId="70" captionText="Fig. 48. Trocholitoceras juvenicostatum Ulrich, Foerste, Miller & Furnish, 1942, from bed PO 131, Olenidsletta Member, Floian, Ordovician, Profilstranda section, Ny Friesland, Spitsbergen. A–B. Specimen FMNH-P30323. A. Adoral view with siphuncular perforation preserved. B. Lateral view of fragment of body chamber with outer shell and ornamentation partly preserved. C. Specimen FMNH-P30330, lateral view with distinctive ribs. Scale bar = 20 mm for all figures." figureDoi="http://doi.org/10.5281/zenodo.5793568" httpUri="https://zenodo.org/record/5793568/files/figure.png" pageId="69" pageNumber="70">Fig. 48A–B</figureCitation>
|
||
) is the most complete specimen assigned this species; it is a fragment of a phragmocone, which is partly heavily recrystallized and part of a 140° long continuously growing body chamber, and which grows with a WER of 2.03. At the base of the body chamber the conch diameter is
|
||
<quantity id="10159B5FFFE9FFEBFE4A78D7FE2F7DBA" box="[412,497,1987,2014]" metricMagnitude="-2" metricUnit="m" metricValue="3.7" pageId="69" pageNumber="70" unit="mm" value="37.0">37 mm</quantity>
|
||
and the whorl is
|
||
<quantity id="10159B5FFFE9FFEBFD1078D7FCEF7DBA" box="[710,817,1987,2014]" metricMagnitude="-2" metricUnit="m" metricValue="1.65" pageId="69" pageNumber="70" unit="mm" value="16.5">16.5 mm</quantity>
|
||
wide and
|
||
<quantity id="10159B5FFFE9FFEBFC6678D7FBDA7DBA" box="[944,1028,1987,2014]" metricMagnitude="-2" metricUnit="m" metricValue="1.1" pageId="69" pageNumber="70" unit="mm" value="11.0">11 mm</quantity>
|
||
high (rW = 1.05). The slightly
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFEAFFE8FF6B7E1DFDE37B22" blockId="70.[189,1398,265,327]" pageId="70" pageNumber="71">
|
||
depressed cross section has flattened flanks, a rounded venter and a shallow imprint zone (
|
||
<quantity id="10159B5FFFEAFFE8FB2D7E1DFA867B47" box="[1275,1368,265,291]" metricMagnitude="-4" metricUnit="m" metricValue="6.0" pageId="70" pageNumber="71" unit="mm" value="0.6">0.6 mm</quantity>
|
||
at whorl height
|
||
<quantity id="10159B5FFFEAFFE8FE8F7E38FE737B23" box="[345,429,300,327]" metricMagnitude="-2" metricUnit="m" metricValue="1.1" pageId="70" pageNumber="71" unit="mm" value="11.0">11 mm</quantity>
|
||
) (
|
||
<figureCitation id="4FD62A3FFFEAFFE8FE127E38FDEF7B22" box="[452,561,300,326]" captionStart="Fig" captionStartId="64.[189,232,1810,1836]" captionTargetBox="[211,1391,1364,1765]" captionTargetId="figure-314@64.[189,1398,1357,1773]" captionTargetPageId="64" captionText="Fig. 44. Cross sections of coiled cephalopods from the Olenidsletta Member, Floian, Ordovician, Profilstranda section, Ny Friesland, Spitsbergen with details of siphuncular position and impression zone of conch. A. Deltoceras beluga sp. nov., FMNH-P30322, from bed PO 07. B. Litoceras profilbekkenense sp. nov, FMNH-P30329, holotype, from bed PO 131, C. Trocholitoceras juvenicostatum Ulrich et al., 1942, FMNH-P30324, from bed PO 131. D. Trocholitoceras walcotti Hyatt, 1894, FMNH-P30328, from bed PO 131. Scale bars = 10 mm." figureDoi="http://doi.org/10.5281/zenodo.5793558" httpUri="https://zenodo.org/record/5793558/files/figure.png" pageId="70" pageNumber="71">Fig. 44C</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFEAFFE8FF6B7E7AFE6F785C" blockId="70.[188,1399,366,568]" pageId="70" pageNumber="71">
|
||
The conch is ornamented with prominent ribs which run obliquely transverse across the whorl and form a deep hyponomic sinus over the venter; ca 20 ribs occur per volution and the distance of the ribs is ca
|
||
<quantity id="10159B5FFFEAFFE8FABE7E85FF347BAB" metricMagnitude="-3" metricUnit="m" metricValue="4.0" pageId="70" pageNumber="71" unit="mm" value="4.0">4 mm</quantity>
|
||
at the base of the body chamber. Additionally, the conch surface is finely striated with ca 5 striae per mm, which run parallel to the ribs. The annulation appears to be constant in amplitude and relative spacing over the entire preserved part of the specimen. On the imprint of the inner shell a wrinkle layer is visible (
|
||
<figureCitation id="4FD62A3FFFEAFFE8FEE07D0AFE7A785C" box="[310,420,542,568]" captionStart="Fig" captionStartId="70.[189,232,1852,1878]" captionTargetBox="[195,1398,791,1812]" captionTargetId="figure-191@70.[189,1398,788,1812]" captionTargetPageId="70" captionText="Fig. 48. Trocholitoceras juvenicostatum Ulrich, Foerste, Miller & Furnish, 1942, from bed PO 131, Olenidsletta Member, Floian, Ordovician, Profilstranda section, Ny Friesland, Spitsbergen. A–B. Specimen FMNH-P30323. A. Adoral view with siphuncular perforation preserved. B. Lateral view of fragment of body chamber with outer shell and ornamentation partly preserved. C. Specimen FMNH-P30330, lateral view with distinctive ribs. Scale bar = 20 mm for all figures." figureDoi="http://doi.org/10.5281/zenodo.5793568" httpUri="https://zenodo.org/record/5793568/files/figure.png" pageId="70" pageNumber="71">Fig. 48A</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFEAFFE8FF6B7D4BFAA978A4" blockId="70.[188,1399,607,704]" pageId="70" pageNumber="71">
|
||
The septal perforation is ca
|
||
<quantity id="10159B5FFFEAFFE8FE297D4BFD86781E" box="[511,600,607,634]" metricMagnitude="-3" metricUnit="m" metricValue="2.9" pageId="70" pageNumber="71" unit="mm" value="2.9">2.9 mm</quantity>
|
||
in diameter and positioned sub-dorsally, ca
|
||
<quantity id="10159B5FFFEAFFE8FB807D4BFB71781E" box="[1110,1199,607,634]" metricMagnitude="-3" metricUnit="m" metricValue="1.5" pageId="70" pageNumber="71" unit="mm" value="1.5">1.5 mm</quantity>
|
||
from the dorsum at the base of the body chamber. The chamber distance is visible in specimen FMNH-P30324, which is a small fragment of a phragmocone with a conch diameter of
|
||
<quantity id="10159B5FFFEAFFE8FC587DB2FC3D78A4" box="[910,995,678,704]" metricMagnitude="-2" metricUnit="m" metricValue="2.2" pageId="70" pageNumber="71" unit="mm" value="22.0">22 mm</quantity>
|
||
, where at a conch width of
|
||
<quantity id="10159B5FFFEAFFE8FAF27DB2FAA978A4" box="[1316,1399,678,704]" metricMagnitude="-2" metricUnit="m" metricValue="1.2" pageId="70" pageNumber="71" unit="mm" value="12.0">12 mm</quantity>
|
||
</paragraph>
|
||
<caption id="83926632FFEAFFE8FF6B7828FB467D87" ID-DOI="http://doi.org/10.5281/zenodo.5793568" ID-Zenodo-Dep="5793568" httpUri="https://zenodo.org/record/5793568/files/figure.png" pageId="70" pageNumber="71" startId="70.[189,232,1852,1878]" targetBox="[195,1398,791,1812]" targetPageId="70">
|
||
<paragraph id="D75236BAFFEAFFE8FF6B7828FB467D87" blockId="70.[189,1399,1852,2020]" pageId="70" pageNumber="71">
|
||
<emphasis id="E599EAA8FFEAFFE8FF6B7828FEC07D32" bold="true" box="[189,286,1852,1878]" pageId="70" pageNumber="71">Fig. 48.</emphasis>
|
||
<taxonomicName id="10ED4D39FFEAFFE8FEFE7828FB557D33" authority="Ulrich, Foerste, Miller & Furnish, 1942" authorityName="Ulrich, Foerste, Miller & Furnish" authorityYear="1942" box="[296,1163,1852,1879]" class="Cephalopoda" family="Trocholitidae" genus="Trocholitoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tarphycerida" pageId="70" pageNumber="71" phylum="Mollusca" rank="species" species="juvenicostatum">
|
||
<emphasis id="E599EAA8FFEAFFE8FEFE7828FD437D32" box="[296,669,1852,1878]" italics="true" pageId="70" pageNumber="71">Trocholitoceras juvenicostatum</emphasis>
|
||
<bibRefCitation id="B37C4B4BFFEAFFE8FD7E7828FB557D33" author="Ulrich E. O. & Foerste A. F. & Miller A. K. & Furnish W. M." box="[680,1163,1852,1879]" pageId="70" pageNumber="71" pagination="1 - 157" refId="ref50378" refString="Ulrich E. O., Foerste A. F., Miller A. K. & Furnish W. M. 1942. Ozarkian and Canadian cephalopods: Part I: Nautilicones. Geological Society of America Special Papers 37: 1 - 157. https: // doi. org / 10.1130 / SPE 37 - p 1" type="journal article" year="1942">Ulrich, Foerste, Miller & Furnish, 1942</bibRefCitation>
|
||
</taxonomicName>
|
||
, from bed PO 131, Olenidsletta Member, Floian, Ordovician, Profilstranda section, Ny Friesland, Spitsbergen.
|
||
<emphasis id="E599EAA8FFEAFFE8FF6B7896FF2B7DF8" bold="true" box="[189,245,1922,1948]" pageId="70" pageNumber="71">A–B</emphasis>
|
||
. Specimen FMNH-P30323.
|
||
<emphasis id="E599EAA8FFEAFFE8FD877896FDB87DF8" bold="true" box="[593,614,1922,1948]" pageId="70" pageNumber="71">A</emphasis>
|
||
. Adoral view with siphuncular perforation preserved.
|
||
<emphasis id="E599EAA8FFEAFFE8FB2B7897FACF7DF9" bold="true" box="[1277,1297,1923,1949]" pageId="70" pageNumber="71">B</emphasis>
|
||
. Lateral view of fragment of body chamber with outer shell and ornamentation partly preserved.
|
||
<emphasis id="E599EAA8FFEAFFE8FB0978B2FB2D7DA4" bold="true" box="[1247,1267,1958,1984]" pageId="70" pageNumber="71">C</emphasis>
|
||
. Specimen FMNH-P30330, lateral view with distinctive ribs. Scale bar = 20 mm for all figures.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="D75236BAFFEBFFE9FF6B7E1DFB117B23" blockId="71.[188,1399,265,327]" pageId="71" pageNumber="72">
|
||
the septal distance is ca
|
||
<quantity id="10159B5FFFEBFFE9FE037E1DFDC67B47" box="[469,536,265,291]" metricMagnitude="-3" metricUnit="m" metricValue="2.0" pageId="71" pageNumber="72" unit="mm" value="2.0">2 mm</quantity>
|
||
at the venter. The sutures are straight and directly transverse. In specimen FMNH-P30332 the whorl width is
|
||
<quantity id="10159B5FFFEBFFE9FD8E7E38FD757B23" box="[600,683,300,327]" metricMagnitude="-2" metricUnit="m" metricValue="1.5" pageId="71" pageNumber="72" unit="mm" value="15.0">15 mm</quantity>
|
||
where the whorl height is
|
||
<quantity id="10159B5FFFEBFFE9FC357E38FBE87B23" box="[995,1078,300,327]" metricMagnitude="-2" metricUnit="m" metricValue="1.3" pageId="71" pageNumber="72" unit="mm" value="13.0">13 mm</quantity>
|
||
(rW = 1.15).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="9FF76531FFEBFFE9FF6B7E7AFDEA795D" pageId="71" pageNumber="72" type="discussion">
|
||
<paragraph id="D75236BAFFEBFFE9FF6B7E7AFEF17BEC" blockId="71.[189,303,366,392]" box="[189,303,366,392]" pageId="71" pageNumber="72">
|
||
<heading id="8C1A81D6FFEBFFE9FF6B7E7AFEF17BEC" bold="true" box="[189,303,366,392]" fontSize="11" level="3" pageId="71" pageNumber="72" reason="3">
|
||
<emphasis id="E599EAA8FFEBFFE9FF6B7E7AFEF17BEC" bold="true" box="[189,303,366,392]" pageId="71" pageNumber="72">Remarks</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFEBFFE9FF6B7E89FDEA795D" blockId="71.[187,1399,412,826]" pageId="71" pageNumber="72">
|
||
In the
|
||
<typeStatus id="08568818FFEBFFE9FEDE7E89FEE47BD3" box="[264,314,413,439]" pageId="71" pageNumber="72">type</typeStatus>
|
||
material of
|
||
<taxonomicName id="10ED4D39FFEBFFE9FE1C7E89FD477BD2" authorityName="Ulrich, Foerste, Miller & Furnish" authorityYear="1942" box="[458,665,413,439]" class="Cephalopoda" family="Trocholitidae" genus="Trocholitoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tarphycerida" pageId="71" pageNumber="72" phylum="Mollusca" rank="species" species="juvenicostatum">
|
||
<emphasis id="E599EAA8FFEBFFE9FE1C7E89FE047BD2" box="[458,474,413,438]" italics="true" pageId="71" pageNumber="72">T</emphasis>
|
||
.
|
||
<emphasis id="E599EAA8FFEBFFE9FE3F7E89FD477BD2" box="[489,665,413,438]" italics="true" pageId="71" pageNumber="72">juvenicostatum</emphasis>
|
||
</taxonomicName>
|
||
, from the St Armand limestone (Middle Ordovician, see
|
||
<bibRefCitation id="B37C4B4BFFEBFFE9FAE07E88FE547BBD" author="Salad Hersi O. & Nowlan G. S. & Lavoie D." pageId="71" pageNumber="72" pagination="1775 - 1790" refId="ref49754" refString="Salad Hersi O., Nowlan G. S. & Lavoie D. 2007. A revision of the stratigraphic nomenclature of the Cambrian - Ordovician strata of the Philipsburg tectonic slice, southern Quebec. Canadian Journal of Earth Sciences 44: 1775 - 1790. https: // doi. org / 10.1139 / e 07 - 041" type="journal article" year="2007">
|
||
Salad Hersi
|
||
<emphasis id="E599EAA8FFEBFFE9FED17ED4FE9B7BBD" box="[263,325,447,473]" italics="true" pageId="71" pageNumber="72">et al.</emphasis>
|
||
2007
|
||
</bibRefCitation>
|
||
for age constraint of St. Armand limestone),
|
||
<collectingRegion id="1529F858FFEBFFE9FC607EABFBCC7BBD" box="[950,1042,447,473]" country="Canada" name="Quebec" pageId="71" pageNumber="72">Quebec</collectingRegion>
|
||
,
|
||
<collectingCountry id="AFFA762AFFEBFFE9FBF77EABFBA57BBD" box="[1057,1147,447,473]" name="Canada" pageId="71" pageNumber="72">Canada</collectingCountry>
|
||
, described by
|
||
<bibRefCitation id="B37C4B4BFFEBFFE9FAFA7EABFE907B99" author="Ulrich E. O. & Foerste A. F. & Miller A. K. & Furnish W. M." pageId="71" pageNumber="72" pagination="1 - 157" refId="ref50378" refString="Ulrich E. O., Foerste A. F., Miller A. K. & Furnish W. M. 1942. Ozarkian and Canadian cephalopods: Part I: Nautilicones. Geological Society of America Special Papers 37: 1 - 157. https: // doi. org / 10.1130 / SPE 37 - p 1" type="journal article" year="1942">
|
||
Ulrich
|
||
<emphasis id="E599EAA8FFEBFFE9FF6B7EF7FF297B98" box="[189,247,482,508]" italics="true" pageId="71" pageNumber="72">et al.</emphasis>
|
||
(1942)
|
||
</bibRefCitation>
|
||
, the rW decreases from 1.2 at a whorl height of
|
||
<quantity id="10159B5FFFEBFFE9FCAA7EF6FC0A7B99" box="[892,980,482,509]" metricMagnitude="-3" metricUnit="m" metricValue="6.5" pageId="71" pageNumber="72" unit="mm" value="6.5">6.5 mm</quantity>
|
||
to 0.91 at a whorl height of
|
||
<quantity id="10159B5FFFEBFFE9FAC87EF7FAAC7B99" box="[1310,1394,483,509]" metricMagnitude="-2" metricUnit="m" metricValue="1.2" pageId="71" pageNumber="72" unit="mm" value="12.0">12 mm</quantity>
|
||
, and the conch grows with a WER of 2.5. This is slightly different from our material. However, the
|
||
<typeStatus id="08568818FFEBFFE9FF6B7D3DFF317827" box="[189,239,553,579]" pageId="71" pageNumber="72">type</typeStatus>
|
||
material of
|
||
<taxonomicName id="10ED4D39FFEBFFE9FE5A7D3EFDBE7827" authorityName="Ulrich, Foerste, Miller & Furnish" authorityYear="1942" box="[396,608,553,579]" class="Cephalopoda" family="Trocholitidae" genus="Trocholitoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tarphycerida" pageId="71" pageNumber="72" phylum="Mollusca" rank="species" species="juvenicostatum">
|
||
<emphasis id="E599EAA8FFEBFFE9FE5A7D3EFE427827" box="[396,412,554,579]" italics="true" pageId="71" pageNumber="72">T</emphasis>
|
||
.
|
||
<emphasis id="E599EAA8FFEBFFE9FE667D3EFDBE7827" box="[432,608,554,579]" italics="true" pageId="71" pageNumber="72">juvenicostatum</emphasis>
|
||
</taxonomicName>
|
||
is slightly tectonically distorted and the measurements therefore reflect some preservation effects. Also, little is known about intraspecific variation of this species. The assignment of the specimens from the Olendisletta Member to
|
||
<taxonomicName id="10ED4D39FFEBFFE9FC147D64FB4B78ED" authorityName="Ulrich, Foerste, Miller & Furnish" authorityYear="1942" box="[962,1173,624,650]" class="Cephalopoda" family="Trocholitidae" genus="Trocholitoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tarphycerida" pageId="71" pageNumber="72" phylum="Mollusca" rank="species" species="juvenicostatum">
|
||
<emphasis id="E599EAA8FFEBFFE9FC147D64FC0C78ED" box="[962,978,624,649]" italics="true" pageId="71" pageNumber="72">T</emphasis>
|
||
.
|
||
<emphasis id="E599EAA8FFEBFFE9FC337D64FB4B78ED" box="[997,1173,624,649]" italics="true" pageId="71" pageNumber="72">juvenicostatum</emphasis>
|
||
</taxonomicName>
|
||
is justified by the presence of prominent ribs, the general similarity of the conch growth rate, shape of the whorl cross section and the subdorsal position of the siphuncle. The other species of
|
||
<taxonomicName id="10ED4D39FFEBFFE9FBD07DA2FB6378B4" authorityName="Hyatt" authorityYear="1894" box="[1030,1213,694,720]" class="Cephalopoda" family="Trocholitidae" genus="Trocholitoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tarphycerida" pageId="71" pageNumber="72" phylum="Mollusca" rank="genus">
|
||
<emphasis id="E599EAA8FFEBFFE9FBD07DA2FB6378B4" box="[1030,1213,694,720]" italics="true" pageId="71" pageNumber="72">Trocholitoceras</emphasis>
|
||
</taxonomicName>
|
||
with prominent ribs,
|
||
<taxonomicName id="10ED4D39FFEBFFE9FF237DCEFC437897" authority="Ulrich, Foerste, Miller & Furnish, 1942" authorityName="Ulrich, Foerste, Miller & Furnish" authorityYear="1942" box="[245,925,729,755]" class="Cephalopoda" family="Trocholitidae" genus="Trocholitoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tarphycerida" pageId="71" pageNumber="72" phylum="Mollusca" rank="species" species="phillipsburgense">
|
||
<emphasis id="E599EAA8FFEBFFE9FF237DCEFEDB7897" box="[245,261,730,755]" italics="true" pageId="71" pageNumber="72">T</emphasis>
|
||
.
|
||
<emphasis id="E599EAA8FFEBFFE9FEC47DCDFE0C7897" box="[274,466,729,755]" italics="true" pageId="71" pageNumber="72">phillipsburgense</emphasis>
|
||
<bibRefCitation id="B37C4B4BFFEBFFE9FE0E7DCDFC437897" author="Ulrich E. O. & Foerste A. F. & Miller A. K. & Furnish W. M." box="[472,925,729,755]" pageId="71" pageNumber="72" pagination="1 - 157" refId="ref50378" refString="Ulrich E. O., Foerste A. F., Miller A. K. & Furnish W. M. 1942. Ozarkian and Canadian cephalopods: Part I: Nautilicones. Geological Society of America Special Papers 37: 1 - 157. https: // doi. org / 10.1130 / SPE 37 - p 1" type="journal article" year="1942">Ulrich, Foerste, Miller & Furnish, 1942</bibRefCitation>
|
||
</taxonomicName>
|
||
, differs in having a nearly smooth surface in early volutions.
|
||
<taxonomicName id="10ED4D39FFEBFFE9FE427DE8FCDF7972" authorityName="Ulrich, Foerste, Miller & Furnish" authorityYear="1942" box="[404,769,764,790]" class="Cephalopoda" family="Trocholitidae" genus="Trocholitoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tarphycerida" pageId="71" pageNumber="72" phylum="Mollusca" rank="species" species="juvenicostatum">
|
||
<emphasis id="E599EAA8FFEBFFE9FE427DE8FCDF7972" box="[404,769,764,790]" italics="true" pageId="71" pageNumber="72">Trocholitoceras juvenicostatum</emphasis>
|
||
</taxonomicName>
|
||
was previously known from the St. Armand limestone (Middle Ordovician) of
|
||
<collectingRegion id="1529F858FFEBFFE9FE027C0BFDEF795D" box="[468,561,799,825]" country="Canada" name="Quebec" pageId="71" pageNumber="72">Quebec</collectingRegion>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |