196 lines
21 KiB
XML
196 lines
21 KiB
XML
<document id="02ADBF2426F7CD28FEA9025CA8857712" 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="5F4487ACFFA2FFA1FDF77DECFC2D7BF3" 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="Cyclostomiceras profilstrandense Kröger & Pohle 2021, sp. nov." docType="treatment" docUuid="538BB8F6-F83E-47EA-A28F-AD4E316CDAFC" docUuidSource="ZooBank" docVersion="8" lastPageNumber="16" masterDocId="A37DFFD4FFACFFAEFFD67F14FFDE7A64" masterDocTitle="Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities" masterLastPageNumber="102" masterPageNumber="1" pageNumber="15" updateTime="1701997144043" updateUser="plazi" zenodo-license-document="CC-BY-4.0" zenodo-license-figures="CC-BY-4.0" zenodo-license-treatments="UNSPECIFIED">
|
||
<mods:mods id="DABAF8264FBB8FFCE1D93729354CC340" xmlns:mods="http://www.loc.gov/mods/v3">
|
||
<mods:titleInfo id="994BD4C55A4BFF5B6FC7E4672389FE76">
|
||
<mods:title id="45E81D82CF7B8E4F5A937D4FE6113EC1">Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities</mods:title>
|
||
</mods:titleInfo>
|
||
<mods:name id="2E7D11C954FEA95BF59E53046133E4CA" type="personal">
|
||
<mods:role id="49437B8E4F539A90B2F42816D32CEF00">
|
||
<mods:roleTerm id="DCC0664C21F330A34FDD035846786F98">Author</mods:roleTerm>
|
||
</mods:role>
|
||
<mods:namePart id="9C53DF50E1D36D5B0CB4D51658B62BD3">Kröger, Björn</mods:namePart>
|
||
<mods:nameIdentifier id="FD0A3196058105B9F55F12020C001528" type="LSID">72F166B6-51DC-4DD8-9DEE-47EDDEE3D2F2</mods:nameIdentifier>
|
||
<mods:affiliation id="83C56388FD648CB5D102BF686BE9FF35">Finnish Museum of Natural History, University of Helsinki, PO Box 44, FI- 00014 Helsinki, Finland.</mods:affiliation>
|
||
<mods:nameIdentifier id="32CC597BA5F0B78CC8BF8C7A0A7FAF90" type="email">bjorn.kroger@helsinki.fi</mods:nameIdentifier>
|
||
</mods:name>
|
||
<mods:name id="0A62E3AF34CA48D636A97CC9BD0F26EC" type="personal">
|
||
<mods:role id="C50D2B339936D5F6573C58388B7DCD22">
|
||
<mods:roleTerm id="958864F34751C89CC8FA8D02786CFC0A">Author</mods:roleTerm>
|
||
</mods:role>
|
||
<mods:namePart id="B1996EC10CDBB45EDEF9709EA3983F44">Pohle, Alexander</mods:namePart>
|
||
<mods:nameIdentifier id="E24BFE3DDDB056A5CC95D4984B128151" type="LSID">9C9B621D-7A77-41FF-8B63-DD21BEE10B56</mods:nameIdentifier>
|
||
<mods:affiliation id="274155D37D1A5D809985B4AB5B3848A4">Paläontologisches Institut und Museum, University of Zurich, Zurich, Switzerland.</mods:affiliation>
|
||
<mods:nameIdentifier id="B81C083988A760069F015BB990B11982" type="email">alexander.pohle@pim.uzh.ch</mods:nameIdentifier>
|
||
</mods:name>
|
||
<mods:typeOfResource id="54332F2EB034495D07C4BD66AAB30BDD">text</mods:typeOfResource>
|
||
<mods:relatedItem id="DE0C9E5DD646D5A66E16EA72CF5AA68A" type="host">
|
||
<mods:titleInfo id="B561079D6AF4A6443C21761B0EEB1B70">
|
||
<mods:title id="1F9BB9FF92EFE148E4425B27E6301295">European Journal of Taxonomy</mods:title>
|
||
</mods:titleInfo>
|
||
<mods:part id="5402A160936D460B601C6F54BB5B4C2D">
|
||
<mods:date id="6E2570658B0A1F29A69BBC5294148407">2021</mods:date>
|
||
<mods:detail id="9E216B25B6E38068F2282593AE9F2AFE" type="pubDate">
|
||
<mods:number id="6BDA1CDD626FCD4FC1C89A7F3B43BD54">2021-12-20</mods:number>
|
||
</mods:detail>
|
||
<mods:detail id="C7455F7B27F39B6978DEB4DD2E63B70F" type="volume">
|
||
<mods:number id="ED527FD75681A17662C20B9406E569C2">783</mods:number>
|
||
</mods:detail>
|
||
<mods:detail id="DE28F5D929E68B16A881B1FA6FD94163" type="issue">
|
||
<mods:number id="3EAB1C08FFFC36A0785C545AD794580B">1</mods:number>
|
||
</mods:detail>
|
||
<mods:extent id="04898E18DE3B193737DE227F719092C8" unit="page">
|
||
<mods:start id="39465A8A697F434F1AB041479BD5E3E2">1</mods:start>
|
||
<mods:end id="7609FF79E967C638E176CCA34BC8B92F">102</mods:end>
|
||
</mods:extent>
|
||
</mods:part>
|
||
</mods:relatedItem>
|
||
<mods:location id="77113F080FBE095AD5568B8FF9860F62">
|
||
<mods:url id="4B25343403C8F4394E0457CC7C3F1D6B">http://dx.doi.org/10.5852/ejt.2021.783.1601</mods:url>
|
||
</mods:location>
|
||
<mods:classification id="3065B4E5A074B071316DE37C6D3C0D59">journal article</mods:classification>
|
||
<mods:identifier id="253EFA81EBC82D3CE553F6E6F267C250" type="CLB-Dataset">2884</mods:identifier>
|
||
<mods:identifier id="917DBE6D8CFF7C391C807900449D3D80" type="DOI">10.5852/ejt.2021.783.1601</mods:identifier>
|
||
<mods:identifier id="30B5742A6E399579C2669581E117CE3A" type="GBIF-Dataset">aa9de9bf-dea4-4321-a51d-6c4f1f55032d</mods:identifier>
|
||
<mods:identifier id="947B0F0AC5B40F16093B1B9A18A8DB8B" type="ISSN">2118-9773</mods:identifier>
|
||
<mods:identifier id="2A22CDA279E5DAD647FDC0AA9AAEBFF4" type="Zenodo-Dep">5793422</mods:identifier>
|
||
<mods:identifier id="AD07D97A32EE2A95E6EE4A6FACEDE22C" type="ZooBank">071EAD63-05ED-4D6C-AC45-8719E6D79E0B</mods:identifier>
|
||
</mods:mods>
|
||
<treatment id="5F4487ACFFA2FFA1FDF77DECFC2D7BF3" ID-DOI="http://doi.org/10.5281/zenodo.5793458" ID-GBIF-Taxon="191693617" ID-Zenodo-Dep="5793458" LSID="urn:lsid:zoobank.org:act:538BB8F6-F83E-47EA-A28F-AD4E316CDAFC" httpUri="http://treatment.plazi.org/id/5F4487ACFFA2FFA1FDF77DECFC2D7BF3" lastPageId="15" lastPageNumber="16" pageId="14" pageNumber="15">
|
||
<subSubSection id="9FF76531FFA2FFA0FDF77DECFBCD7977" box="[545,1043,760,787]" pageId="14" pageNumber="15" type="nomenclature">
|
||
<paragraph id="D75236BAFFA2FFA0FDF77DECFBCD7977" blockId="14.[355,1232,760,858]" box="[545,1043,760,787]" pageId="14" pageNumber="15">
|
||
<heading id="8C1A81D6FFA2FFA0FDF77DECFBCD7977" box="[545,1043,760,787]" centered="true" fontSize="11" level="2" pageId="14" pageNumber="15" reason="2">
|
||
<taxonomicName id="10ED4D39FFA2FFA0FDF77DECFC6F7977" authority="Kröger & Pohle, 2021" authorityName="Kröger & Pohle" authorityYear="2021" box="[545,945,760,787]" class="Cephalopoda" family="Cyclostomiceratidae" genus="Cyclostomiceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tetrabranchia" pageId="14" pageNumber="15" phylum="Mollusca" rank="species" species="profilstrandense" status="sp. nov.">
|
||
<emphasis id="E599EAA8FFA2FFA0FDF77DECFC6F7977" bold="true" box="[545,945,760,787]" italics="true" pageId="14" pageNumber="15">Cyclostomiceras profilstrandense</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="FEAA57D3FFA2FFA0FC6E7DEDFBCD7977" box="[952,1043,761,787]" pageId="14" pageNumber="15" rank="species">sp. nov.</taxonomicNameLabel>
|
||
</heading>
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="9FF76531FFA2FFA0FEB57C08FC86793E" pageId="14" pageNumber="15" type="description">
|
||
<paragraph id="D75236BAFFA2FFA0FEB57C08FB0E7953" blockId="14.[355,1232,760,858]" box="[355,1232,796,823]" pageId="14" pageNumber="15">
|
||
<uri id="A37C3AB8FFA2FFA0FEB57C08FB0E7953" box="[355,1232,796,823]" pageId="14" pageNumber="15">
|
||
urn:lsid:zoobank.org:act:
|
||
<uuid id="A34B0C6FFFA2FFA0FDA97C08FB0E7953" box="[639,1232,796,823]" pageId="14" pageNumber="15">538BB8F6-F83E-47EA-A28F-AD4E316CDAFC</uuid>
|
||
</uri>
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA2FFA0FD0D7C2BFC86793E" blockId="14.[355,1232,760,858]" box="[731,856,831,858]" pageId="14" pageNumber="15">
|
||
<figureCitation id="4FD62A3FFFA2FFA0FD0D7C2BFC86793E" box="[731,856,831,858]" 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="14" pageNumber="15">Fig. 5O–Q</figureCitation>
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="9FF76531FFA2FFA0FF6B7C94FBC87988" pageId="14" pageNumber="15" type="diagnosis">
|
||
<paragraph id="D75236BAFFA2FFA0FF6B7C94FEE879FE" blockId="14.[189,310,896,922]" box="[189,310,896,922]" pageId="14" pageNumber="15">
|
||
<heading id="8C1A81D6FFA2FFA0FF6B7C94FEE879FE" bold="true" box="[189,310,896,922]" fontSize="11" level="3" pageId="14" pageNumber="15" reason="3">
|
||
<emphasis id="E599EAA8FFA2FFA0FF6B7C94FEE879FE" bold="true" box="[189,310,896,922]" pageId="14" pageNumber="15">Diagnosis</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA2FFA0FF6B7CBBFBC87988" blockId="14.[189,1398,943,1005]" pageId="14" pageNumber="15">
|
||
Small
|
||
<taxonomicName id="10ED4D39FFA2FFA0FEDD7CBBFE1179AD" authorityName="Hyatt" authorityYear="1900" box="[267,463,943,969]" class="Cephalopoda" family="Cyclostomiceratidae" genus="Cyclostomiceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tetrabranchia" pageId="14" pageNumber="15" phylum="Mollusca" rank="genus">
|
||
<emphasis id="E599EAA8FFA2FFA0FEDD7CBBFE1179AD" box="[267,463,943,969]" italics="true" pageId="14" pageNumber="15">Cyclostomiceras</emphasis>
|
||
</taxonomicName>
|
||
with adult conch width of ca
|
||
<quantity id="10159B5FFFA2FFA0FCE97CBBFC4979AD" box="[831,919,943,969]" metricMagnitude="-2" metricUnit="m" metricValue="1.4" pageId="14" pageNumber="15" unit="mm" value="14.0">14 mm</quantity>
|
||
, slightly depressed conch cross section; ornamented with shallow, widely spaced, directly transverse annulations.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="9FF76531FFA2FFA0FF6B7B00FDC87E38" box="[189,534,1044,1117]" pageId="14" pageNumber="15" type="etymology">
|
||
<paragraph id="D75236BAFFA2FFA0FF6B7B00FE9A7E4A" blockId="14.[189,324,1044,1070]" box="[189,324,1044,1070]" pageId="14" pageNumber="15">
|
||
<heading id="8C1A81D6FFA2FFA0FF6B7B00FE9A7E4A" bold="true" box="[189,324,1044,1070]" fontSize="11" level="3" pageId="14" pageNumber="15" reason="3">
|
||
<emphasis id="E599EAA8FFA2FFA0FF6B7B00FE9A7E4A" bold="true" box="[189,324,1044,1070]" pageId="14" pageNumber="15">Etymology</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA2FFA0FF6B7B56FDC87E38" blockId="14.[189,534,1090,1117]" box="[189,534,1090,1117]" pageId="14" pageNumber="15">
|
||
Referring to the
|
||
<typeStatus id="08568818FFA2FFA0FEA87B57FE6F7E39" box="[382,433,1091,1117]" pageId="14" pageNumber="15">type</typeStatus>
|
||
locality.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="9FF76531FFA2FFA0FF6B7B90FC1F7FE6" pageId="14" pageNumber="15" type="materials_examined">
|
||
<paragraph id="D75236BAFFA2FFA0FF6B7B90FEB27EF9" blockId="14.[189,364,1155,1182]" box="[189,364,1155,1182]" pageId="14" pageNumber="15">
|
||
<heading id="8C1A81D6FFA2FFA0FF6B7B90FEB27EF9" bold="true" box="[189,364,1155,1182]" fontSize="11" level="3" pageId="14" pageNumber="15" reason="3">
|
||
<emphasis id="E599EAA8FFA2FFA0FF6B7B90FEB27EF9" bold="true" box="[189,364,1155,1182]" pageId="14" pageNumber="15">Type material</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA2FFA0FF3C7BA6FD7E7E94" blockId="14.[189,672,1202,1264]" pageId="14" pageNumber="15">
|
||
<materialsCitation id="67853CE7FFA2FFA0FF3C7BA6FD7E7E94" ID-GBIF-Occurrence="3421082338" collectionCode="FMNH-P" pageId="14" pageNumber="15" specimenCode="FMNH-P30336" specimenCount="1" typeStatus="holotype">
|
||
<emphasis id="E599EAA8FFA2FFA0FF3C7BA6FE827EA8" bold="true" box="[234,348,1202,1228]" pageId="14" pageNumber="15">
|
||
<typeStatus id="08568818FFA2FFA0FF3C7BA6FE827EA8" box="[234,348,1202,1228]" pageId="14" pageNumber="15" type="holotype">Holotype</typeStatus>
|
||
</emphasis>
|
||
<specimenCount id="C1EBFD33FFA2FFA0FF6B7BC1FEEF7E8B" box="[189,305,1237,1263]" pageId="14" pageNumber="15" type="generic">Specimen</specimenCount>
|
||
<specimenCode id="874B9EC1FFA2FFA0FEEE7BC1FE2E7E8B" box="[312,496,1237,1263]" collectionCode="FMNH-P" pageId="14" pageNumber="15">FMNH-P30336</specimenCode>
|
||
, by monotypy.
|
||
</materialsCitation>
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA2FFA0FF6B7A03FE257F54" blockId="14.[189,507,1302,1329]" box="[189,507,1302,1329]" pageId="14" pageNumber="15">
|
||
<heading id="8C1A81D6FFA2FFA0FF6B7A03FE257F54" bold="true" box="[189,507,1302,1329]" fontSize="11" level="3" pageId="14" pageNumber="15" reason="3">
|
||
<emphasis id="E599EAA8FFA2FFA0FF6B7A03FE257F54" bold="true" box="[189,507,1302,1329]" pageId="14" pageNumber="15">Type locality and horizon</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA2FFA0FF6B7A51FC1F7FE6" blockId="14.[189,1398,1349,1411]" pageId="14" pageNumber="15">
|
||
Profilstranda section, adjacent to Hinlopenstretet, Spitsbergen, from bed Po123.3,
|
||
<quantity id="10159B5FFFA2FFA0FB5C7A51FB327F04" box="[1162,1260,1349,1376]" metricMagnitude="2" metricUnit="m" metricValue="1.2029999999999998" pageId="14" pageNumber="15" unit="m" value="120.3">120.3 m</quantity>
|
||
above base of Olenidsletta Member,
|
||
<collectionCode id="B1FCAE7FFFA2FFA0FE347A7DFE267FE7" box="[482,504,1385,1411]" country="Canada" lsid="urn:lsid:biocol.org:col:13946" name="Royal British Columbia Museum - Herbarium" pageId="14" pageNumber="15" type="Museum">V</collectionCode>
|
||
2a trilobite zone, Blackhillsian, Floian.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="9FF76531FFA2FFA1FF6B7ABEFC2D7BF3" lastPageId="15" lastPageNumber="16" pageId="14" pageNumber="15" type="description">
|
||
<paragraph id="D75236BAFFA2FFA0FF6B7ABEFE907FA0" blockId="14.[189,334,1450,1476]" box="[189,334,1450,1476]" pageId="14" pageNumber="15">
|
||
<heading id="8C1A81D6FFA2FFA0FF6B7ABEFE907FA0" bold="true" box="[189,334,1450,1476]" fontSize="11" level="3" pageId="14" pageNumber="15" reason="3">
|
||
<emphasis id="E599EAA8FFA2FFA0FF6B7ABEFE907FA0" bold="true" box="[189,334,1450,1476]" pageId="14" pageNumber="15">Description</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA2FFA0FF6B7ACCFB477CE4" blockId="14.[187,1400,1496,1664]" pageId="14" pageNumber="15">
|
||
Specimen FMNH-P30336 is a fragment of part of the phragmocone and a nearly complete body chamber. At the base of the body chamber the cross section is slightly depressed, the conch height is
|
||
<quantity id="10159B5FFFA2FFA0FAD27AE8FAAF7C72" box="[1284,1393,1532,1558]" metricMagnitude="-2" metricUnit="m" metricValue="1.18" pageId="14" pageNumber="15" unit="mm" value="11.8">11.8 mm</quantity>
|
||
, the width
|
||
<quantity id="10159B5FFFA2FFA0FEE5790BFE457C5D" box="[307,411,1567,1593]" metricMagnitude="-2" metricUnit="m" metricValue="1.23" pageId="14" pageNumber="15" unit="mm" value="12.3">12.3 mm</quantity>
|
||
(rW = 1.08). The maximum conch width is
|
||
<quantity id="10159B5FFFA2FFA0FC4C790BFBDC7C5D" box="[922,1026,1567,1593]" metricMagnitude="-2" metricUnit="m" metricValue="1.3699999999999999" pageId="14" pageNumber="15" unit="mm" value="13.7">13.7 mm</quantity>
|
||
and reached at ca mid-length of the body chamber. The length of the body chamber is
|
||
<quantity id="10159B5FFFA2FFA0FCED7956FC4F7C39" box="[827,913,1602,1629]" metricMagnitude="-2" metricUnit="m" metricValue="1.1" pageId="14" pageNumber="15" unit="mm" value="11.0">11 mm</quantity>
|
||
, and its aperture is simple transverse and slightly contracted with a width of
|
||
<quantity id="10159B5FFFA2FFA0FD8E7971FD1F7CE4" box="[600,705,1637,1664]" metricMagnitude="-2" metricUnit="m" metricValue="1.35" pageId="14" pageNumber="15" unit="mm" value="13.5">13.5 mm</quantity>
|
||
(angle of expansion of conch width 6°).
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA2FFA0FF6B79B3FEE67D4E" blockId="14.[189,1399,1703,1834]" pageId="14" pageNumber="15">
|
||
The conch surface is ornamented with widely rounded annuli which have a distance of ca
|
||
<quantity id="10159B5FFFA2FFA0FAD879B3FA8B7CA5" box="[1294,1365,1703,1729]" metricMagnitude="-3" metricUnit="m" metricValue="3.0" pageId="14" pageNumber="15" unit="mm" value="3.0">3 mm</quantity>
|
||
in distance (ca 0.25 of corresponding conch height). Additionally, distinct, irregularly spaced growth lines occur. The annuli and the growth lines form a shallow hyponomic sinus at the prosiphuncular side of the conch.
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA2FFA0FF6B7846FE797DB1" blockId="14.[189,1400,1874,2005]" pageId="14" pageNumber="15">
|
||
The chamber spacing is narrow with a distance between two septa of ca
|
||
<quantity id="10159B5FFFA2FFA0FBCB7846FBA77D08" box="[1053,1145,1874,1900]" metricMagnitude="-3" metricUnit="m" metricValue="1.3" pageId="14" pageNumber="15" unit="mm" value="1.3">1.3 mm</quantity>
|
||
at an assumed conch height of ca
|
||
<quantity id="10159B5FFFA2FFA0FE8E7861FE6E7DEB" box="[344,432,1909,1935]" metricMagnitude="-2" metricUnit="m" metricValue="1.1" pageId="14" pageNumber="15" unit="mm" value="11.0">11 mm</quantity>
|
||
. The sutures form a very shallow lateral lobe. The siphuncle is preserved in the last chamber, and has a thickness of ca
|
||
<quantity id="10159B5FFFA2FFA0FD5A788CFD387DD7" box="[652,742,1944,1971]" metricMagnitude="-3" metricUnit="m" metricValue="1.1" pageId="14" pageNumber="15" unit="mm" value="1.1">1.1 mm</quantity>
|
||
and a distance from the conch margin of
|
||
<quantity id="10159B5FFFA2FFA0FB19788CFAF47DD7" box="[1231,1322,1944,1971]" metricMagnitude="-4" metricUnit="m" metricValue="8.0" pageId="14" pageNumber="15" unit="mm" value="0.8">0.8 mm</quantity>
|
||
and is presumably tubular.
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA3FFA1FF6B7E1CFE867B46" blockId="15.[189,344,264,290]" box="[189,344,264,290]" pageId="15" pageNumber="16">
|
||
<heading id="8C1A81D6FFA3FFA1FF6B7E1CFE867B46" bold="true" box="[189,344,264,290]" fontSize="11" level="3" pageId="15" pageNumber="16" reason="3">
|
||
<emphasis id="E599EAA8FFA3FFA1FF6B7E1CFE867B46" bold="true" box="[189,344,264,290]" pageId="15" pageNumber="16">Comparison</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph id="D75236BAFFA3FFA1FF6B7E23FC2D7BF3" blockId="15.[188,1399,311,408]" pageId="15" pageNumber="16">
|
||
The conch shape and conch dimensions are almost identical to those of
|
||
<taxonomicName id="10ED4D39FFA3FFA1FBEC7E23FE567B11" authority="(Whitfield, 1886)" baseAuthorityName="Whitfield" baseAuthorityYear="1886" class="Cephalopoda" family="Cyclostomiceratidae" genus="Cyclostomiceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Tetrabranchia" pageId="15" pageNumber="16" phylum="Mollusca" rank="species" species="minimum">
|
||
<emphasis id="E599EAA8FFA3FFA1FBEC7E23FAA87B35" box="[1082,1398,311,337]" italics="true" pageId="15" pageNumber="16">Cyclostomiceras minimum</emphasis>
|
||
(Whitfield, 1886)
|
||
</taxonomicName>
|
||
from the Fort Cassin Formation,
|
||
<collectingRegion id="1529F858FFA3FFA1FCDB7E4FFCAB7B11" box="[781,885,347,373]" country="United States of America" name="Vermont" pageId="15" pageNumber="16">Vermont</collectingRegion>
|
||
,
|
||
<collectingCountry id="AFFA762AFFA3FFA1FC567E4EFC677B10" box="[896,953,346,372]" name="United States of America" pageId="15" pageNumber="16">USA</collectingCountry>
|
||
(see
|
||
<bibRefCitation id="B37C4B4BFFA3FFA1FC207E4EFB197B10" author="Ulrich E. O. & Foerste A. F. & Miller A. K." box="[1014,1223,346,372]" pageId="15" pageNumber="16" pagination="1 - 240" refId="ref50439" refString="Ulrich E. O., Foerste A. F. & Miller A. K. 1943. Ozarkian and Canadian cephalopods. Part II. Brevicones. Geological Society of America Special Papers 59: 1 - 240. https: // doi. org / 10.1130 / SPE 49 - p 1" type="journal article" year="1943">
|
||
Ulrich
|
||
<emphasis id="E599EAA8FFA3FFA1FB917E4FFB5F7B10" box="[1095,1153,346,372]" italics="true" pageId="15" pageNumber="16">et al.</emphasis>
|
||
1943
|
||
</bibRefCitation>
|
||
). However, the new species differs in possessing a weakly ornamented conch surface.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |