280 lines
37 KiB
XML
280 lines
37 KiB
XML
<document id="2F592E39B1EF429AF02089C9419D1397" ID-CLB-Dataset="298099" ID-DOI="10.5070/P940561331" ID-GBIF-Dataset="59287004-b877-4428-8e25-e1bb8d48aa37" ID-ISSN="0031-0298" ID-Zenodo-Dep="10913477" ID-ZooBank="1756B24A-813B-423F-896F-91B21FF58A79" IM.bibliography_approvedBy="diego" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="diego" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="diego" IM.treatmentCitations_approvedBy="felipe" IM.treatments_approvedBy="diego" checkinTime="1712169731283" checkinUser="felipe" docAuthor="Hickman, Carole S." docDate="2023" docId="C23987DDFFE52923FC27FA4FEB12B968" docLanguage="en" docName="PaleoBios.40.5.1-51.pdf" docOrigin="PaleoBios 40 (5)" docSource="http://dx.doi.org/10.5070/p940561331" docStyle="DocumentStyle:76F55B8832C4952BA7DD61B33E1F0E81.1:PaleoBios.2023-.journal_article" docStyleId="76F55B8832C4952BA7DD61B33E1F0E81" docStyleName="PaleoBios.2023-.journal_article" docStyleVersion="1" docTitle="Delectopecten keaseyorum Hickman 2023, N. SP." docType="treatment" docUuid="8B64E474-0E4C-4152-B5FE-8EB1F2F2AC5A" docUuidSource="ZooBank" docVersion="5" lastPageNumber="30" masterDocId="3E00FFA5FFF8293CFF9FFFA4EE04BD6F" masterDocTitle="Paleogene marine bivalves of the deep-water Keasey Formation in Oregon, Part II: The pteriomorphs" masterLastPageNumber="51" masterPageNumber="1" pageNumber="28" updateTime="1717686085320" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-NC-SA-4.0">
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<mods:title id="F3B9B69DAC7C1AEDC71ED08C4E4B6FF7">Paleogene marine bivalves of the deep-water Keasey Formation in Oregon, Part II: The pteriomorphs</mods:title>
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<mods:namePart id="B2CE03101E07A77C54CB6BAD4C37A61B">Hickman, Carole S.</mods:namePart>
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<mods:title id="2051BA6DE1B788815AE2B1ADBF9F610A">PaleoBios</mods:title>
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<mods:part id="F4A3E71C0740FB3FAD0BCDCD7F8EDC55">
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<mods:date id="343FB8F72B881302EA693940FCDB1E35">2023</mods:date>
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<treatment id="C23987DDFFE52923FC27FA4FEB12B968" ID-DOI="http://doi.org/10.5281/zenodo.11505130" ID-GBIF-Taxon="232155353" ID-Zenodo-Dep="11505130" LSID="urn:lsid:zoobank.org:act:8B64E474-0E4C-4152-B5FE-8EB1F2F2AC5A" httpUri="http://treatment.plazi.org/id/C23987DDFFE52923FC27FA4FEB12B968" lastPageId="31" lastPageNumber="30" pageId="29" pageNumber="28">
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<subSubSection id="028A6540FFE52921FC27FA4FEB79BB69" box="[952,1405,1515,1543]" pageId="29" pageNumber="28" type="nomenclature">
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<paragraph id="4A2F36CBFFE52921FC27FA4FEB79BB69" blockId="29.[952,1405,1515,1574]" box="[952,1405,1515,1543]" pageId="29" pageNumber="28">
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<heading id="116781A7FFE52921FC27FA4FEB79BB69" allCaps="true" box="[952,1405,1515,1543]" centered="true" fontSize="10" level="2" pageId="29" pageNumber="28" reason="2">
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<taxonomicName id="8D904D48FFE52921FC27FA4FEB3DBB68" authority="Hickman, 2023" authorityName="Hickman" authorityYear="2023" box="[952,1337,1515,1543]" class="Bivalvia" family="Pectinidae" genus="Delectopecten" kingdom="Animalia" order="Pectinida" pageId="29" pageNumber="30" phylum="Mollusca" rank="species" species="keaseyorum" status="n. sp.">
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<emphasis id="78E4EAD9FFE52921FC27FA4FEB3DBB68" box="[952,1337,1515,1543]" italics="true" pageId="29" pageNumber="28">DELECTOPECTEN KEASEYORUM</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="63D757A2FFE52921FAA0FA49EB79BB69" box="[1343,1405,1516,1543]" pageId="29" pageNumber="28" rank="species">N. SP.</taxonomicNameLabel>
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</heading>
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</paragraph>
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||
</subSubSection>
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<subSubSection id="028A6540FFE52921FB88F9AAEDE5BBD3" pageId="29" pageNumber="28" type="description">
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<paragraph id="4A2F36CBFFE52921FB88F9AAEB1ABB49" blockId="29.[952,1405,1515,1574]" box="[1047,1310,1550,1574]" pageId="29" pageNumber="28">
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<figureCitation id="D2AB2A4EFFE52921FB88F9AAEA9BBB4A" box="[1047,1183,1550,1574]" captionStart="Figure 15" captionStartId="25.[112,187,1863,1887]" captionTargetBox="[111,1521,917,1836]" captionTargetId="figure-285@25.[111,1521,917,1836]" captionTargetPageId="25" captionText="Figure 15. Dense concentrations of mud pectens in matrix. A. Delectopecten keaseyorum n. sp. in silty mudstone, middle member. B. Delectopecten keaseyorum in tuffaceous siltstone. C. Delectopecten kieli n. sp. in silty mudstone with echinoid spines. D. Delectopecten kieli in silty mudstone with fish scales and bone. Scale bars= 1cm." figureDoi="http://doi.org/10.5281/zenodo.10913513" httpUri="https://zenodo.org/record/10913513/files/figure.png" pageId="29" pageNumber="28">FIGS. 15A, B</figureCitation>
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;
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<figureCitation id="D2AB2A4EFFE52921FB36F9AAEB1ABB49" box="[1193,1310,1550,1574]" captionStart="Figure 19" captionStartId="30.[111,186,1436,1460]" captionTargetBox="[128,1501,193,1417]" captionTargetId="figure-177@30.[128,1501,193,1417]" captionTargetPageId="30" captionText="Figure 19. Delectopecten keaseyorum n. sp. Holotype and two paratypes in matrix. A. Partial left valve exterior over nested right valve fragments, Holotype UCMP 110760. B. Right valve of paratype exterior partially overlapping holotype, UCMP 110761. C. Right valve exterior partially overlapping adjacent paratype, UCMP 110762. Scale bar for A–C=5 mm. D. Detail of fine campto- nectes sculpture on holotype. E. Right valve exterior of paratype in matrix preserving ctenolium denticles in byssal notch (yellow arrow), UCMP 110763. Scale bar=1 mm." figureDoi="http://doi.org/10.5281/zenodo.10913525" httpUri="https://zenodo.org/record/10913525/files/figure.png" pageId="29" pageNumber="28">FIG 19A–E</figureCitation>
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</paragraph>
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<paragraph id="4A2F36CBFFE52921FCDDF999EABEBB18" blockId="29.[834,1494,1597,1764]" pageId="29" pageNumber="28">
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<taxonomicName id="8D904D48FFE52921FCDDF999EDE9BB36" authority="Hickman, 2023" authorityName="Hickman" authorityYear="2023" box="[834,1005,1597,1625]" class="Bivalvia" family="Pectinidae" genus="Delectopecten" kingdom="Animalia" order="Pectinida" pageId="29" pageNumber="28" phylum="Mollusca" rank="genus" status="n. sp.">
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<emphasis id="78E4EAD9FFE52921FCDDF999EDE9BB36" box="[834,1005,1597,1625]" italics="true" pageId="29" pageNumber="28">Delectopecten</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="63D757A2FFE52921FC6BF99BEA37BB36" box="[1012,1075,1599,1625]" pageId="29" pageNumber="28" rank="species">n. sp.</taxonomicNameLabel>
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Vokes
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<emphasis id="78E4EAD9FFE52921FB15F999EAA6BB36" box="[1162,1186,1597,1625]" italics="true" pageId="29" pageNumber="28">in</emphasis>
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Warren, Norbisrath and Grivetti (1945) (checklist).
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</paragraph>
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<paragraph id="4A2F36CBFFE52921FCDDF927EDE5BBD3" blockId="29.[834,1494,1597,1764]" pageId="29" pageNumber="28">
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<taxonomicName id="8D904D48FFE52921FCDDF927EDE9BBF0" authority="Hickman, 2023" authorityName="Hickman" authorityYear="2023" box="[834,1005,1667,1695]" class="Bivalvia" family="Pectinidae" genus="Delectopecten" kingdom="Animalia" order="Pectinida" pageId="29" pageNumber="28" phylum="Mollusca" rank="genus" status="n. sp.">
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<emphasis id="78E4EAD9FFE52921FCDDF927EDE9BBF0" box="[834,1005,1667,1695]" italics="true" pageId="29" pageNumber="28">Delectopecten</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="63D757A2FFE52921FC6BF921EA37BBF0" box="[1012,1075,1669,1695]" pageId="29" pageNumber="28" rank="species">n. sp.</taxonomicNameLabel>
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<collectionCode id="2C81AE0EFFE52921FBA5F920EA4ABBF1" box="[1082,1102,1668,1694]" country="Chile" name="Departamento de Geologia, Universidad de Chile" pageId="29" pageNumber="28">R</collectionCode>
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.C. Moore and Vokes (1953), pp. 115, 119.
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</paragraph>
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</subSubSection>
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||
<subSubSection id="028A6540FFE52921FCDDF96CEAE9BA5C" pageId="29" pageNumber="28" type="reference_group">
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||
<paragraph id="4A2F36CBFFE52921FCDDF96CEBBCBB8B" blockId="29.[834,1494,1597,1764]" box="[834,1464,1736,1764]" pageId="29" pageNumber="28">
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<treatmentCitationGroup id="6A8011E5FFE52921FCDDF96CEBBCBB8B" box="[834,1464,1736,1764]" pageId="29" pageNumber="28">
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<taxonomicName id="8D904D48FFE52921FCDDF96CEA13BB8B" box="[834,1047,1736,1764]" class="Bivalvia" family="Pectinidae" genus="Delectopecten" kingdom="Animalia" order="Pectinida" pageId="29" pageNumber="28" phylum="Mollusca" rank="species" species="undetermined">
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<emphasis id="78E4EAD9FFE52921FCDDF96CEDE9BB8B" box="[834,1005,1736,1764]" italics="true" pageId="29" pageNumber="28">Delectopecten</emphasis>
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sp.
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</taxonomicName>
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<treatmentCitation id="CB3110DAFFE52921FB82F96DEB53BB8B" author="Hickman, C. S." box="[1053,1367,1737,1764]" page="1221" pageId="29" pageNumber="28" year="1984">
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||
<bibRefCitation id="2E014B3AFFE52921FB82F96DEAEFBB8B" author="Hickman, C. S." box="[1053,1259,1737,1764]" pageId="29" pageNumber="28" pagination="1215 - 1234" refId="ref31128" refString="Hickman, C. S. 1984. Composition, structure, ecology, and evolution of six Cenozoic deep-water mollusk communities. Journal of Paleontology 58: 1215 - 1234." type="journal article" year="1984">Hickman (1984)</bibRefCitation>
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, p. 1221
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</treatmentCitation>
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; fig. 5D.
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</treatmentCitationGroup>
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</paragraph>
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<paragraph id="4A2F36CBFFE52921FCFDF952EAE9BA5C" blockId="29.[834,1522,1782,1945]" pageId="29" pageNumber="28">
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<emphasis id="78E4EAD9FFE52921FCFDF952EA1CBA7F" bold="true" box="[866,1048,1782,1808]" pageId="29" pageNumber="28">
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ZooBank
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||
<collectionCode id="2C81AE0EFFE52921FC44F952EA1CBA7F" box="[987,1048,1782,1808]" pageId="29" pageNumber="28">LSID</collectionCode>
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</emphasis>
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—
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<uri id="3E013AC9FFE52921FBA6F952EAE9BA5C" pageId="29" pageNumber="28">
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urn:lsid:zoobank.org:act:
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<uuid id="3E360C1EFFE52921FAFAF952EAE9BA5C" pageId="29" pageNumber="28">8B64E474- 0E4C-4152-B5FE-8EB1F2F2AC5A</uuid>
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</uri>
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||
</paragraph>
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</subSubSection>
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<subSubSection id="028A6540FFE52922FCFDF89EEB49BBC6" lastPageId="30" lastPageNumber="29" pageId="29" pageNumber="28" type="diagnosis">
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<paragraph id="4A2F36CBFFE52922FCFDF89EEB49BBC6" blockId="29.[834,1522,1782,1945]" lastBlockId="30.[831,1520,1608,1948]" lastPageId="30" lastPageNumber="29" pageId="29" pageNumber="28">
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<emphasis id="78E4EAD9FFE52921FCFDF89EEDEBBA3B" bold="true" box="[866,1007,1850,1876]" pageId="29" pageNumber="28">Diagnosis</emphasis>
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—Shell small (average length=
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<quantity id="8D689B2EFFE52921FA3EF89EEBE7BA3A" box="[1441,1507,1850,1877]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="29" pageNumber="28" unit="cm" value="1.0">1 cm</quantity>
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), equivalved, with strongly compressed valves of equal length and width; shell material extremely thin, typically preserved with distinctive hyaline or glassy appearance; valves compressed, with slightly raised, sharply pointed umbones; posterior auricles not clearly delimited from disc, flat with fine camptonectes surface sculpture; anterior auricles large, strongly set off from disc; posterior auricles flat, not clearly delimited; right anterior auricle with deep byssal notch and sculpture of 10 to 12 fine radial riblets crossed by fine growth lines; left anterior auricle sharply delimited from disc, flat, with fine camptonectes surface sculpture; disk surfaces of both valves covered with extremely fine camptonectes sculpture, weak commarginal undulations sometimes developed beneath umbones on early portion of disc.
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</paragraph>
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</subSubSection>
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||
<caption id="1EEF6643FFE62922FFF0FA38EC24BB71" ID-DOI="http://doi.org/10.5281/zenodo.10913525" ID-Zenodo-Dep="10913525" httpUri="https://zenodo.org/record/10913525/files/figure.png" pageId="30" pageNumber="29" startId="30.[111,186,1436,1460]" targetBox="[128,1501,193,1417]" targetPageId="30" targetType="figure">
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||
<paragraph id="4A2F36CBFFE62922FFF0FA38EC24BB71" blockId="30.[111,1496,1436,1567]" pageId="30" pageNumber="29">
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<emphasis id="78E4EAD9FFE62922FFF0FA38EED9B8DB" bold="true" box="[111,221,1436,1460]" pageId="30" pageNumber="29">Figure 19</emphasis>
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.
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<taxonomicName id="8D904D48FFE62922FF77FA39EC05B8DA" authority="Hickman, 2023" authorityName="Hickman" authorityYear="2023" box="[232,513,1437,1461]" class="Bivalvia" family="Pectinidae" genus="Delectopecten" kingdom="Animalia" order="Pectinida" pageId="30" pageNumber="29" phylum="Mollusca" rank="species" species="keaseyorum" status="sp. nov.">
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<emphasis id="78E4EAD9FFE62922FF77FA39EC05B8DA" box="[232,513,1437,1461]" italics="true" pageId="30" pageNumber="29">Delectopecten keaseyorum</emphasis>
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</taxonomicName>
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||
<taxonomicNameLabel id="63D757A2FFE62922FD99FA39EC3AB8DB" box="[518,574,1437,1460]" pageId="30" pageNumber="29" rank="species">n. sp.</taxonomicNameLabel>
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||
Holotype and two paratypes in matrix.
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<emphasis id="78E4EAD9FFE62922FC77FA38EDFDB8DB" bold="true" box="[1000,1017,1436,1460]" pageId="30" pageNumber="29">A</emphasis>
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||
. Partial left valve exterior over nested right valve fragments, Holotype UCMP 110760.
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||
<emphasis id="78E4EAD9FFE62922FDABFA13EC40B8A0" bold="true" box="[564,580,1463,1487]" pageId="30" pageNumber="29">B</emphasis>
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||
. Right valve of paratype exterior partially overlapping holotype, UCMP 110761.
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<emphasis id="78E4EAD9FFE62922FA3EFA13EBB4B8A0" bold="true" box="[1441,1456,1463,1487]" pageId="30" pageNumber="29">C</emphasis>
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||
. Right valve exterior partially overlapping adjacent paratype, UCMP 110762. Scale bar for A–C=5 mm.
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<emphasis id="78E4EAD9FFE62922FB2FFA76EAC6B885" bold="true" box="[1200,1218,1490,1514]" pageId="30" pageNumber="29">D</emphasis>
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||
. Detail of fine camptonectes sculpture on holotype.
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<emphasis id="78E4EAD9FFE62922FE2DFA48EFC5BB6B" bold="true" box="[434,449,1516,1540]" pageId="30" pageNumber="29">E</emphasis>
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. Right valve exterior of paratype in matrix preserving ctenolium denticles in byssal notch (yellow arrow), UCMP 110763. Scale bar=1 mm.
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</paragraph>
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</caption>
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<subSubSection id="028A6540FFE62923FCC0F915EFDEB923" lastPageId="31" lastPageNumber="30" pageId="30" pageNumber="29" type="discussion">
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||
<paragraph id="4A2F36CBFFE62922FCC0F915EA94BA39" blockId="30.[831,1520,1608,1948]" pageId="30" pageNumber="29">
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||
<emphasis id="78E4EAD9FFE62922FCC0F915EDF5BBA4" bold="true" box="[863,1009,1713,1739]" pageId="30" pageNumber="29">Discussion</emphasis>
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||
—Assignment to
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<taxonomicName id="8D904D48FFE62922FB50F915EB57BBA4" authorityName="RAFINESQUE" authorityYear="1815" box="[1231,1363,1713,1739]" class="Bivalvia" family="Pectinidae" kingdom="Animalia" order="Pectinida" pageId="30" pageNumber="29" phylum="Mollusca" rank="family">Pectinidae</taxonomicName>
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is based on the presence of the same pattern of camptonectes microsculpture on right and left valves (
|
||
<figureCitation id="D2AB2A4EFFE62922FA80F953EBABBA7E" box="[1311,1455,1783,1809]" captionStart="Figure 19" captionStartId="30.[111,186,1436,1460]" captionTargetBox="[128,1501,193,1417]" captionTargetId="figure-177@30.[128,1501,193,1417]" captionTargetPageId="30" captionText="Figure 19. Delectopecten keaseyorum n. sp. Holotype and two paratypes in matrix. A. Partial left valve exterior over nested right valve fragments, Holotype UCMP 110760. B. Right valve of paratype exterior partially overlapping holotype, UCMP 110761. C. Right valve exterior partially overlapping adjacent paratype, UCMP 110762. Scale bar for A–C=5 mm. D. Detail of fine campto- nectes sculpture on holotype. E. Right valve exterior of paratype in matrix preserving ctenolium denticles in byssal notch (yellow arrow), UCMP 110763. Scale bar=1 mm." figureDoi="http://doi.org/10.5281/zenodo.10913525" httpUri="https://zenodo.org/record/10913525/files/figure.png" pageId="30" pageNumber="29">Fig. 19A–D</figureCitation>
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) and the presence of a ctenolium along the ventral margin of the byssal notch (
|
||
<figureCitation id="D2AB2A4EFFE62922FB87F898EA87BA39" box="[1048,1155,1852,1878]" captionStart="Figure 19" captionStartId="30.[111,186,1436,1460]" captionTargetBox="[128,1501,193,1417]" captionTargetId="figure-177@30.[128,1501,193,1417]" captionTargetPageId="30" captionText="Figure 19. Delectopecten keaseyorum n. sp. Holotype and two paratypes in matrix. A. Partial left valve exterior over nested right valve fragments, Holotype UCMP 110760. B. Right valve of paratype exterior partially overlapping holotype, UCMP 110761. C. Right valve exterior partially overlapping adjacent paratype, UCMP 110762. Scale bar for A–C=5 mm. D. Detail of fine campto- nectes sculpture on holotype. E. Right valve exterior of paratype in matrix preserving ctenolium denticles in byssal notch (yellow arrow), UCMP 110763. Scale bar=1 mm." figureDoi="http://doi.org/10.5281/zenodo.10913525" httpUri="https://zenodo.org/record/10913525/files/figure.png" pageId="30" pageNumber="29">Fig. 19E</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph id="4A2F36CBFFE62923FCC0F8FBECBEBFCA" blockId="30.[831,1520,1608,1948]" lastBlockId="31.[112,801,195,1945]" lastPageId="31" lastPageNumber="30" pageId="30" pageNumber="29">
|
||
This is undoubtedly the most abundant bivalve species in the Keasey Formation. It was collected from many localities and in all three members of the formation during geologic mapping and noted in the checklist of Warren et al. (1945) as
|
||
<taxonomicName id="8D904D48FFE72923FE03FEACEC75BC4B" box="[412,625,264,292]" class="Bivalvia" family="Pectinidae" genus="Delectopecten" kingdom="Animalia" order="Pectinida" pageId="31" pageNumber="30" phylum="Mollusca" rank="species" species="undetermined">
|
||
<emphasis id="78E4EAD9FFE72923FE03FEACEC43BC4B" box="[412,583,264,292]" italics="true" pageId="31" pageNumber="30">Delectopecten</emphasis>
|
||
sp.
|
||
</taxonomicName>
|
||
Harold Vokes had intended to describe it, and his material and prospective
|
||
<typeStatus id="952B8869FFE72923FF3CFEEBEEE3BC06" box="[163,231,335,361]" pageId="31" pageNumber="30">types</typeStatus>
|
||
were examined in the present study. However, better material collected subsequently by the author is the basis of the new name. Lack of representation of this species in collections is attributable to the relative rarity of isolated concretions and crushing of the delicate shells. Less frequent and abundant species traditionally attract collectors with a search image for the rare, single, entire, and well preserved Keasey gastropod and bivalve taxa. Collectors skilled in the preparation of delicate fossils may be rewarded by working with this species.
|
||
</paragraph>
|
||
<paragraph id="4A2F36CBFFE72923FF0FFD0BEFDEB923" blockId="31.[112,801,195,1945]" pageId="31" pageNumber="30">
|
||
A preservational peculiarity of this species, especially in the massive tuffaceous siltstone of the upper part of middle member, its occurrence in small, dense concentrations or concretionary masses, isolated from other mollusks at any given locality (
|
||
<figureCitation id="D2AB2A4EFFE72923FE7BFC9FEC6BBE39" box="[484,623,827,854]" captionStart="Figure 15" captionStartId="25.[112,187,1863,1887]" captionTargetBox="[111,1521,917,1836]" captionTargetId="figure-285@25.[111,1521,917,1836]" captionTargetPageId="25" captionText="Figure 15. Dense concentrations of mud pectens in matrix. A. Delectopecten keaseyorum n. sp. in silty mudstone, middle member. B. Delectopecten keaseyorum in tuffaceous siltstone. C. Delectopecten kieli n. sp. in silty mudstone with echinoid spines. D. Delectopecten kieli in silty mudstone with fish scales and bone. Scale bars= 1cm." figureDoi="http://doi.org/10.5281/zenodo.10913513" httpUri="https://zenodo.org/record/10913513/files/figure.png" pageId="31" pageNumber="30">Fig. 15 A, B</figureCitation>
|
||
). Within these concentrations shells have no predominant orientation and are stacked on top of one another. Although valves are entire, they have been fragmented by compression or distorted by pressure from adjoining individuals (e.g.,
|
||
<figureCitation id="D2AB2A4EFFE72923FFEFFC4FEEFDB969" box="[112,249,1003,1030]" captionStart="Figure 15" captionStartId="25.[112,187,1863,1887]" captionTargetBox="[111,1521,917,1836]" captionTargetId="figure-285@25.[111,1521,917,1836]" captionTargetPageId="25" captionText="Figure 15. Dense concentrations of mud pectens in matrix. A. Delectopecten keaseyorum n. sp. in silty mudstone, middle member. B. Delectopecten keaseyorum in tuffaceous siltstone. C. Delectopecten kieli n. sp. in silty mudstone with echinoid spines. D. Delectopecten kieli in silty mudstone with fish scales and bone. Scale bars= 1cm." figureDoi="http://doi.org/10.5281/zenodo.10913513" httpUri="https://zenodo.org/record/10913513/files/figure.png" pageId="31" pageNumber="30">Fig. 15A, B</figureCitation>
|
||
;
|
||
<figureCitation id="D2AB2A4EFFE72923FE9AFC4FEF58B969" box="[261,348,1003,1030]" captionStart="Figure 19" captionStartId="30.[111,186,1436,1460]" captionTargetBox="[128,1501,193,1417]" captionTargetId="figure-177@30.[128,1501,193,1417]" captionTargetPageId="30" captionText="Figure 19. Delectopecten keaseyorum n. sp. Holotype and two paratypes in matrix. A. Partial left valve exterior over nested right valve fragments, Holotype UCMP 110760. B. Right valve of paratype exterior partially overlapping holotype, UCMP 110761. C. Right valve exterior partially overlapping adjacent paratype, UCMP 110762. Scale bar for A–C=5 mm. D. Detail of fine campto- nectes sculpture on holotype. E. Right valve exterior of paratype in matrix preserving ctenolium denticles in byssal notch (yellow arrow), UCMP 110763. Scale bar=1 mm." figureDoi="http://doi.org/10.5281/zenodo.10913525" httpUri="https://zenodo.org/record/10913525/files/figure.png" pageId="31" pageNumber="30">Fig. 19</figureCitation>
|
||
). Articulated specimens are present in these concentrations indicating lack of significant preburial transport or exposure.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="028A6540FFE72923FF0FFBF1EAC2BDB2" pageId="31" pageNumber="30" type="etymology">
|
||
<paragraph id="4A2F36CBFFE72923FF0FFBF1ED06B9B6" blockId="31.[112,801,195,1945]" pageId="31" pageNumber="30">
|
||
<emphasis id="78E4EAD9FFE72923FF0FFBF1EF1AB900" bold="true" box="[144,286,1109,1135]" pageId="31" pageNumber="30">Etymology</emphasis>
|
||
—Named for members of the Keasey Family of Vernonia,
|
||
<collectingRegion id="8854F829FFE72923FEB2FBDCEF8DB9FD" box="[301,393,1144,1170]" country="United States of America" name="Oregon" pageId="31" pageNumber="30">Oregon</collectingRegion>
|
||
for their longstanding interest in the fossil fauna and encouragement of its collection and study, including access to outcrops on their property.
|
||
</paragraph>
|
||
<paragraph id="4A2F36CBFFE72923FF0FFB46EAC2BDB2" blockId="31.[112,801,195,1945]" lastBlockId="31.[832,1521,195,1031]" pageId="31" pageNumber="30">
|
||
<emphasis id="78E4EAD9FFE72923FF0FFB46EF45B993" bold="true" box="[144,321,1250,1276]" pageId="31" pageNumber="30">Comparisons</emphasis>
|
||
—
|
||
<taxonomicName id="8D904D48FFE72923FEC1FB44ECA2B991" authorityName="Hickman" authorityYear="2023" box="[350,678,1248,1278]" class="Bivalvia" family="Pectinidae" genus="Delectopecten" kingdom="Animalia" order="Pectinida" pageId="31" pageNumber="30" phylum="Mollusca" rank="species" species="keaseyorum">
|
||
<emphasis id="78E4EAD9FFE72923FEC1FB44ECA2B991" box="[350,678,1248,1278]" italics="true" pageId="31" pageNumber="30">Delectopecten keaseyorum</emphasis>
|
||
</taxonomicName>
|
||
is clearly distinguished from
|
||
<taxonomicName id="8D904D48FFE72923FEFAFAA0EC48B84F" authorityName="Hickman" authorityYear="2023" box="[357,588,1284,1312]" class="Bivalvia" family="Pectinidae" genus="Delectopecten" kingdom="Animalia" order="Pectinida" pageId="31" pageNumber="30" phylum="Mollusca" rank="species" species="kieli">
|
||
<emphasis id="78E4EAD9FFE72923FEFAFAA0EC48B84F" box="[357,588,1284,1312]" italics="true" pageId="31" pageNumber="30">Delectopecten kieli</emphasis>
|
||
</taxonomicName>
|
||
by its larger and thinner shell, hyaline surface, and finer, submicroscopic camptonectes sculpture (
|
||
<figureCitation id="D2AB2A4EFFE72923FE30FAEFEC39B809" box="[431,573,1355,1382]" captionStart="Figure 19" captionStartId="30.[111,186,1436,1460]" captionTargetBox="[128,1501,193,1417]" captionTargetId="figure-177@30.[128,1501,193,1417]" captionTargetPageId="30" captionText="Figure 19. Delectopecten keaseyorum n. sp. Holotype and two paratypes in matrix. A. Partial left valve exterior over nested right valve fragments, Holotype UCMP 110760. B. Right valve of paratype exterior partially overlapping holotype, UCMP 110761. C. Right valve exterior partially overlapping adjacent paratype, UCMP 110762. Scale bar for A–C=5 mm. D. Detail of fine campto- nectes sculpture on holotype. E. Right valve exterior of paratype in matrix preserving ctenolium denticles in byssal notch (yellow arrow), UCMP 110763. Scale bar=1 mm." figureDoi="http://doi.org/10.5281/zenodo.10913525" httpUri="https://zenodo.org/record/10913525/files/figure.png" pageId="31" pageNumber="30">Fig. 19A–E</figureCitation>
|
||
). The sculpture is visible with a light microscope only at higher magnification and with strongly oblique illumination. As noted above, meaningful comparison with the ill-defined
|
||
<taxonomicName id="8D904D48FFE72923FC97FA10EEE2B89C" authorityName="Gabb" authorityYear="1869" class="Bivalvia" family="Pectinidae" genus="Pecten" kingdom="Animalia" order="Pectinida" pageId="31" pageNumber="30" phylum="Mollusca" rank="species" species="peckhami">
|
||
<emphasis id="78E4EAD9FFE72923FC97FA10EEE2B89C" italics="true" pageId="31" pageNumber="30">D. peckhami</emphasis>
|
||
</taxonomicName>
|
||
is confounded by Gabb’s generalized original description, persistent lack of a clearly designated
|
||
<typeStatus id="952B8869FFE72923FD7CFA58ED18BB79" box="[739,796,1532,1558]" pageId="31" pageNumber="30">type</typeStatus>
|
||
, and inadequate illustration. The broad stratigraphic range (Eocene–Miocene) of specimens assigned to
|
||
<taxonomicName id="8D904D48FFE72923FC97F9E4EEE2BBEF" authorityName="Gabb" authorityYear="1869" class="Bivalvia" family="Pectinidae" genus="Pecten" kingdom="Animalia" order="Pectinida" pageId="31" pageNumber="30" phylum="Mollusca" rank="species" species="peckhami">
|
||
<emphasis id="78E4EAD9FFE72923FC97F9E4EEE2BBEF" italics="true" pageId="31" pageNumber="30">D. peckhami</emphasis>
|
||
</taxonomicName>
|
||
is consistent with the suggestion that it is a complex of deep-water species in need of detailed study and revision. In the experience of this author, the most similar material to
|
||
<taxonomicName id="8D904D48FFE72923FEC2F969EC0ABB84" authorityName="Hickman" authorityYear="2023" box="[349,526,1741,1771]" class="Bivalvia" family="Pectinidae" genus="Delectopecten" kingdom="Animalia" order="Pectinida" pageId="31" pageNumber="30" phylum="Mollusca" rank="species" species="keaseyorum">
|
||
<emphasis id="78E4EAD9FFE72923FEC2F969EC0ABB84" box="[349,526,1741,1771]" italics="true" pageId="31" pageNumber="30">D. keaseyorum</emphasis>
|
||
</taxonomicName>
|
||
is from the Paleogene Kreyenhagen Formation of the Coalinga district in
|
||
<collectingRegion id="8854F829FFE72923FD78F956EEB8BA40" country="United States of America" name="California" pageId="31" pageNumber="30">California</collectingRegion>
|
||
, removed from
|
||
<taxonomicName id="8D904D48FFE72923FEE6F8B0EC08BA5F" authorityName="Gabb" authorityYear="1869" box="[377,524,1812,1840]" class="Bivalvia" family="Pectinidae" genus="Pecten" kingdom="Animalia" order="Pectinida" pageId="31" pageNumber="30" phylum="Mollusca" rank="species" species="peckhami">
|
||
<emphasis id="78E4EAD9FFE72923FEE6F8B0EC08BA5F" box="[377,524,1812,1840]" italics="true" pageId="31" pageNumber="30">D. peckhami</emphasis>
|
||
</taxonomicName>
|
||
and described as
|
||
<taxonomicName id="8D904D48FFE72923FD7CF8B0EF58BA3C" authority="Hertlein (1934)" authorityName="Hertlein" authorityYear="1934" class="Bivalvia" family="Pectinidae" genus="Delectopecten" kingdom="Animalia" order="Pectinida" pageId="31" pageNumber="30" phylum="Mollusca" rank="species" species="lillisi">
|
||
<emphasis id="78E4EAD9FFE72923FD7CF8B0EE97BA3C" italics="true" pageId="31" pageNumber="30">D. lillisi</emphasis>
|
||
<bibRefCitation id="2E014B3AFFE72923FF07F89CEF58BA3C" author="Hertlein, L. G." box="[152,348,1848,1875]" pageId="31" pageNumber="30" pagination="1 - 5" refId="ref30789" refString="Hertlein, L. G. 1934. New Oysters and a new Pecten from the Tertiary of California. Southern California Academy of Sciences Bulletin 33 (1): 1 - 5, pls. 1 - 2." type="journal article" year="1934">Hertlein (1934)</bibRefCitation>
|
||
</taxonomicName>
|
||
. E.J. Moore (1963, 1984b) provides a detailed history of the treatment of these small mud pectens and helpful illustration of relatively well- preserved Eocene to Holocene specimens.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="028A6540FFE72923FCFFFF42EB12B968" pageId="31" pageNumber="30" type="materials_examined">
|
||
<paragraph id="4A2F36CBFFE72923FCFFFF42EBF4BC05" blockId="31.[832,1521,195,1031]" pageId="31" pageNumber="30">
|
||
<emphasis id="78E4EAD9FFE72923FCFFFF42EA67BC6F" bold="true" box="[864,1123,230,256]" pageId="31" pageNumber="30">Material examined</emphasis>
|
||
—More than 500 entire valves (some articulated) and recognizable and shell fragments, including material from numeous
|
||
<collectionCode id="2C81AE0EFFE72923FB74FE89EB29BC28" box="[1259,1325,301,327]" country="USA" httpUri="http://grbio.org/cool/3n47-ewde" name="U.S. Geological Survey" pageId="31" pageNumber="30">USGS</collectionCode>
|
||
localities originally collected by Vokes, Warren, Norbisrath, and Grivetti.
|
||
</paragraph>
|
||
<paragraph id="4A2F36CBFFE72923FCFFFED7EA29BCBB" blockId="31.[832,1521,195,1031]" pageId="31" pageNumber="30">
|
||
<materialsCitation id="FAF83C96FFE72923FCFFFED7EA29BCBB" ID-GBIF-Occurrence="4873742316" collectionCode="UCMP" pageId="31" pageNumber="30" specimenCode="UCMP 110760, IP2543" specimenCount="1" typeStatus="holotype">
|
||
<emphasis id="78E4EAD9FFE72923FCFFFED7EDD8BCE2" bold="true" box="[864,988,371,397]" pageId="31" pageNumber="30">
|
||
<typeStatus id="952B8869FFE72923FCFFFED7EDD8BCE2" box="[864,988,371,397]" pageId="31" pageNumber="30" type="holotype">Holotype</typeStatus>
|
||
</emphasis>
|
||
—
|
||
<specimenCode id="1A369EB0FFE72923FC67FED7EAB7BCE2" box="[1016,1203,371,397]" collectionCode="UCMP" country="USA" httpUri="http://grbio.org/cool/2fxn-eays" name="University of California Museum of Paleontology" pageId="31" pageNumber="30" type="University or college">UCMP 110760</specimenCode>
|
||
, incomplete left valve in matrix, exposed length
|
||
<quantity id="8D689B2EFFE72923FBF5FE32EAB1BCDE" box="[1130,1205,406,433]" metricMagnitude="-3" metricUnit="m" metricValue="8.0" pageId="31" pageNumber="30" unit="mm" value="8.0">8 mm</quantity>
|
||
, exposed height 9.5 mm, Loc.
|
||
<collectionCode id="2C81AE0EFFE72923FCE6FE1DEDC1BCBC" box="[889,965,441,467]" country="USA" httpUri="http://grbio.org/cool/2fxn-eays" name="University of California Museum of Paleontology" pageId="31" pageNumber="30" type="University or college">UCMP</collectionCode>
|
||
<specimenCode id="1A369EB0FFE72923FC54FE1DEA2CBCBB" box="[971,1064,441,468]" collectionCode="UCMP" country="USA" httpUri="http://grbio.org/cool/2fxn-eays" name="University of California Museum of Paleontology" pageId="31" pageNumber="30" type="University or college">IP2543</specimenCode>
|
||
.
|
||
</materialsCitation>
|
||
</paragraph>
|
||
<paragraph id="4A2F36CBFFE72923FCFFFE78EAC6BFC9" blockId="31.[832,1521,195,1031]" pageId="31" pageNumber="30">
|
||
<emphasis id="78E4EAD9FFE72923FCFFFE78EA4BBC98" bold="true" box="[864,1103,476,503]" pageId="31" pageNumber="30">
|
||
Figured
|
||
<typeStatus id="952B8869FFE72923FC54FE79EA4BBC98" box="[971,1103,477,503]" pageId="31" pageNumber="30" type="paratype">Paratypes</typeStatus>
|
||
</emphasis>
|
||
—
|
||
<collectionCode id="2C81AE0EFFE72923FBF4FE79EABCBC98" box="[1131,1208,477,503]" country="USA" httpUri="http://grbio.org/cool/2fxn-eays" name="University of California Museum of Paleontology" pageId="31" pageNumber="30" type="University or college">UCMP</collectionCode>
|
||
110761, incomplete right valve in matrix, partially overlapping
|
||
<typeStatus id="952B8869FFE72923FABAFDA4EB92BF75" box="[1317,1430,512,538]" pageId="31" pageNumber="30" type="holotype">holotype</typeStatus>
|
||
,
|
||
<collectionCode id="2C81AE0EFFE72923FA3BFDA4EBF4BF75" box="[1444,1520,512,538]" country="USA" httpUri="http://grbio.org/cool/2fxn-eays" name="University of California Museum of Paleontology" pageId="31" pageNumber="30" type="University or college">UCMP</collectionCode>
|
||
Loc. IP2543;
|
||
<collectionCode id="2C81AE0EFFE72923FC7EFD87EA29BF52" box="[993,1069,547,573]" country="USA" httpUri="http://grbio.org/cool/2fxn-eays" name="University of California Museum of Paleontology" pageId="31" pageNumber="30" type="University or college">UCMP</collectionCode>
|
||
110762, incomplete right valve partially overlapping
|
||
<typeStatus id="952B8869FFE72923FBBFFDE3EA94BF0E" box="[1056,1168,583,609]" pageId="31" pageNumber="30" type="paratype">paratype</typeStatus>
|
||
110761, Loc.
|
||
<collectionCode id="2C81AE0EFFE72923FAA4FDE2EB83BF0F" box="[1339,1415,582,608]" country="USA" httpUri="http://grbio.org/cool/2fxn-eays" name="University of California Museum of Paleontology" pageId="31" pageNumber="30" type="University or college">UCMP</collectionCode>
|
||
IP2543;
|
||
<collectionCode id="2C81AE0EFFE72923FCDFFDCDED88BFEC" box="[832,908,617,643]" country="USA" httpUri="http://grbio.org/cool/2fxn-eays" name="University of California Museum of Paleontology" pageId="31" pageNumber="30" type="University or college">UCMP</collectionCode>
|
||
110763, partial right valve with byssal notch and ctenolium, Loc.
|
||
<collectionCode id="2C81AE0EFFE72923FB9CFD29EA4BBFC8" box="[1027,1103,653,679]" country="USA" httpUri="http://grbio.org/cool/2fxn-eays" name="University of California Museum of Paleontology" pageId="31" pageNumber="30" type="University or college">UCMP</collectionCode>
|
||
IP16620.
|
||
</paragraph>
|
||
<paragraph id="4A2F36CBFFE72923FCFFFD14EAC0BE5C" blockId="31.[832,1521,195,1031]" pageId="31" pageNumber="30">
|
||
<emphasis id="78E4EAD9FFE72923FCFFFD14EA1DBFA6" bold="true" box="[864,1049,687,714]" pageId="31" pageNumber="30">Type locality</emphasis>
|
||
—
|
||
<collectionCode id="2C81AE0EFFE72923FBA8FD14EA83BFA5" box="[1079,1159,688,714]" country="USA" httpUri="http://grbio.org/cool/2fxn-eays" name="University of California Museum of Paleontology" pageId="31" pageNumber="30" type="University or college">UCMP</collectionCode>
|
||
IP2543 (Empire Lite-Rock Quarry) (formerly
|
||
<collectionCode id="2C81AE0EFFE72923FBB1FD77EA74BF82" box="[1070,1136,723,749]" country="USA" httpUri="http://grbio.org/cool/3n47-ewde" name="U.S. Geological Survey" pageId="31" pageNumber="30">USGS</collectionCode>
|
||
25036) (Coll. C. Hickman and Undergraduate Invertebrate Paleontology Class field trip; 1967, C. and J. Hickman, 1970).
|
||
</paragraph>
|
||
<paragraph id="4A2F36CBFFE72923FCFFFC98EB12B968" blockId="31.[832,1521,195,1031]" pageId="31" pageNumber="30">
|
||
<emphasis id="78E4EAD9FFE72923FCFFFC98EA2DBE39" bold="true" box="[864,1065,828,854]" pageId="31" pageNumber="30">Other localities</emphasis>
|
||
—
|
||
<collectionCode id="2C81AE0EFFE72923FBD9FC99EA83BE38" box="[1094,1159,829,855]" country="USA" httpUri="http://grbio.org/cool/3n47-ewde" name="U.S. Geological Survey" pageId="31" pageNumber="30">USGS</collectionCode>
|
||
15263, 15265, 15306, 15307, 15308, 15309, 15584 (lower member).
|
||
<collectionCode id="2C81AE0EFFE72923FAB4FCC4EB73BE15" box="[1323,1399,864,890]" country="USA" httpUri="http://grbio.org/cool/2fxn-eays" name="University of California Museum of Paleontology" pageId="31" pageNumber="30" type="University or college">UCMP</collectionCode>
|
||
IP16620;
|
||
<collectionCode id="2C81AE0EFFE72923FCDFFC27ED81BEF2" box="[832,901,899,925]" country="USA" httpUri="http://grbio.org/cool/3n47-ewde" name="U.S. Geological Survey" pageId="31" pageNumber="30">USGS</collectionCode>
|
||
15267, 15268, 15274, 15276, 15279, 15280, 15281, 15282, 15283, 15217, 15313, 15314, 15316, 15318, 15509, 15525, 15582, 15602 (middle member).
|
||
<collectionCode id="2C81AE0EFFE72923FCDFFC49ED86B968" box="[832,898,1005,1031]" country="USA" httpUri="http://grbio.org/cool/3n47-ewde" name="U.S. Geological Survey" pageId="31" pageNumber="30">USGS</collectionCode>
|
||
15315, 15318 (upper member).
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |