206 lines
26 KiB
XML
206 lines
26 KiB
XML
<document id="66381ABD757183E281AA533E56A24F3D" ID-DOI="10.5070/P940561331" ID-ISSN="0031-0298" ID-Zenodo-Dep="10913477" ID-ZooBank="1756B24A-813B-423F-896F-91B21FF58A79" IM.bibliography_approvedBy="felipe" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" IM.treatmentCitations_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1712169731283" checkinUser="felipe" docAuthor="Hickman, Carole S." docDate="2023" docId="C23987DDFFD9291EFC71FDB3EB5BBC4D" 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="Parvamussium SACCO 1897" docType="treatment" docVersion="2" lastPageNumber="33" masterDocId="3E00FFA5FFF8293CFF9FFFA4EE04BD6F" masterDocTitle="Paleogene marine bivalves of the deep-water Keasey Formation in Oregon, Part II: The pteriomorphs" masterLastPageNumber="51" masterPageNumber="1" pageNumber="32" updateTime="1712170163329" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-NC-SA-4.0">
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<mods:title id="62BC2BFB7C1CB53635DCA90BF4BD7897">Paleogene marine bivalves of the deep-water Keasey Formation in Oregon, Part II: The pteriomorphs</mods:title>
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<mods:namePart id="635C7621695D0D4493270E5E3436E3EA">Hickman, Carole S.</mods:namePart>
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<mods:title id="214DCCAC3DDC34C34037E378F83B02B1">PaleoBios</mods:title>
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<mods:part id="C833F8C66E3272A997D549A7BFA4A66E">
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<mods:date id="8589D545700BC2D74EB2313CF11AF307">2023</mods:date>
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<mods:number id="5A6D65B8A8A077E68BCEA6FD390370DC">2023-06-08</mods:number>
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<mods:url id="BD27FB8BB0E8CDB7AFDA7294FB02DF7E">http://dx.doi.org/10.5070/p940561331</mods:url>
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<mods:identifier id="90660CEF8E70F074A1C95B1A01BA7B12" type="DOI">10.5070/P940561331</mods:identifier>
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<mods:identifier id="179E05FC231B675C3B56E9447160E663" type="ISSN">0031-0298</mods:identifier>
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<treatment id="C23987DDFFD9291EFC71FDB3EB5BBC4D" LSID="urn:lsid:plazi:treatment:C23987DDFFD9291EFC71FDB3EB5BBC4D" httpUri="http://treatment.plazi.org/id/C23987DDFFD9291EFC71FDB3EB5BBC4D" lastPageId="34" lastPageNumber="33" pageId="33" pageNumber="32">
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<subSubSection id="028A6540FFD9291DFC71FDB3EB46BF5D" box="[1006,1346,535,563]" pageId="33" pageNumber="32" type="nomenclature">
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<paragraph id="4A2F36CBFFD9291DFC71FDB3EB46BF5D" blockId="33.[1006,1346,535,563]" box="[1006,1346,535,563]" pageId="33" pageNumber="32">
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<heading id="116781A7FFD9291DFC71FDB3EB46BF5D" allCaps="true" box="[1006,1346,535,563]" centered="true" fontSize="10" level="2" pageId="33" pageNumber="32" reason="2">
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<taxonomicName id="8D904D48FFD9291DFC71FDB3EB46BF5D" ID-CoL="7PBZB" authority="SACCO, 1897" authorityName="SACCO" authorityYear="1897" box="[1006,1346,535,563]" class="Bivalvia" family="Propeamussiidae" genus="Parvamussium" kingdom="Animalia" order="Pectinida" pageId="33" pageNumber="32" phylum="Mollusca" rank="genus">
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<emphasis id="78E4EAD9FFD9291DFC71FDB3EAB5BF5C" box="[1006,1201,535,563]" italics="true" pageId="33" pageNumber="32">PARVAMUSSIUM</emphasis>
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SACCO, 1897
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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="028A6540FFD9291EFCFFFDE2EB5BBC4D" lastPageId="34" lastPageNumber="33" pageId="33" pageNumber="32" type="type_taxon">
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<paragraph id="4A2F36CBFFD9291DFCFFFDE2ED78BFC9" blockId="33.[832,1521,581,889]" pageId="33" pageNumber="32">
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<materialsCitation id="FAF83C96FFD9291DFCFFFDE2ED7CBFC9" country="Italy" location="By" municipality="Upper Miocene" pageId="33" pageNumber="32" specimenCount="1" typeStatus="holotype">
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<emphasis id="78E4EAD9FFD9291DFCFFFDE2EA0ABF0F" bold="true" box="[864,1038,582,608]" pageId="33" pageNumber="32">
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<typeStatus id="952B8869FFD9291DFCFFFDE2EDA7BF0F" box="[864,931,582,608]" pageId="33" pageNumber="32">Type</typeStatus>
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species
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</emphasis>
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—
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<location id="4F4F6010FFD9291DFBB3FDE3EA48BF0E" LSID="urn:lsid:plazi:treatment:C23987DDFFD9291EFC71FDB3EB5BBC4D:4F4F6010FFD9291DFBB3FDE3EA48BF0E" box="[1068,1100,583,609]" country="Italy" municipality="Upper Miocene" name="By" pageId="33" pageNumber="32">By</location>
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original designation,
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<taxonomicName id="8D904D48FFD9291DFAC0FDE1EAB7BFEB" authority="Bronn (1832)" authorityName="Bronn" authorityYear="1832" class="Bivalvia" family="Pectinidae" genus="Pecten" kingdom="Animalia" order="Pectinida" pageId="33" pageNumber="32" phylum="Mollusca" rank="species" species="duodecimlamellatus">
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<emphasis id="78E4EAD9FFD9291DFAC0FDE1EA02BFEB" italics="true" pageId="33" pageNumber="32">Pecten duodecimlamellatus</emphasis>
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<bibRefCitation id="2E014B3AFFD9291DFB95FDCEEAB7BFEB" author="Bronn, H. G." box="[1034,1203,617,644]" pageId="33" pageNumber="32" refId="ref27793" refString="Bronn, H. G. 1832. Italiens Tertiar-Gebilde und deren organische Einschlusse. K. Groos, Heidelberg. 176 pp." type="book" year="1832">Bronn (1832)</bibRefCitation>
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</taxonomicName>
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.
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<collectingMunicipality id="AA4BACB1FFD9291DFB23FDCEEB7CBFEC" box="[1212,1400,617,644]" pageId="33" pageNumber="32">Upper Miocene</collectingMunicipality>
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, northern
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<collectingCountry id="3287765BFFD9291DFCDFFD28ED7CBFC9" box="[832,888,652,678]" name="Italy" pageId="33" pageNumber="32">Italy</collectingCountry>
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</materialsCitation>
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.
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</paragraph>
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<paragraph id="4A2F36CBFFD9291EFCFFFD0AEC1ABF82" blockId="33.[832,1521,581,889]" lastBlockId="34.[112,801,193,1933]" lastPageId="34" lastPageNumber="33" pageId="33" pageNumber="32">
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<taxonomicName id="8D904D48FFD9291DFCFFFD0AEA11BFA5" ID-CoL="7PBZB" authorityName="SACCO" authorityYear="1897" box="[864,1045,686,714]" class="Bivalvia" family="Propeamussiidae" genus="Parvamussium" kingdom="Animalia" order="Pectinida" pageId="33" pageNumber="32" phylum="Mollusca" rank="genus">
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<emphasis id="78E4EAD9FFD9291DFCFFFD0AEA11BFA5" box="[864,1045,686,714]" italics="true" pageId="33" pageNumber="32">Parvamussium</emphasis>
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</taxonomicName>
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is treated here as a subgenus of
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<taxonomicName id="8D904D48FFD9291DFA23FD0AEDDBBF82" ID-CoL="7PDH3" authorityName="DE GREGORIO" authorityYear="1884" class="Bivalvia" family="Propeamussiidae" genus="Propeamussium" kingdom="Animalia" order="Pectinida" pageId="33" pageNumber="32" phylum="Mollusca" rank="genus">
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<emphasis id="78E4EAD9FFD9291DFA23FD0AEDDBBF82" italics="true" pageId="33" pageNumber="32">Propeamussium</emphasis>
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</taxonomicName>
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, accommodating small, rounded shells, with interior shell slats developing later in ontogeny and coinciding with the inception of distinctive scabrous exterior sculpture on the initially smooth disc of the left valve. Discrepant sculpture on the right and left valves is illustrated here in the living
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<taxonomicName id="8D904D48FFDA291EFDF4FF65EF81BC6E" ID-CoL="75SVZ" authority="(Dall, 1871)" baseAuthorityName="Dall" baseAuthorityYear="1871" class="Bivalvia" family="Propeamussiidae" genus="Parvamussium" kingdom="Animalia" order="Pectinida" pageId="34" pageNumber="33" phylum="Mollusca" rank="species" species="alaskense">
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<emphasis id="78E4EAD9FFDA291EFDF4FF65EEE2BC6E" italics="true" pageId="34" pageNumber="33">Parvamussium alaskense</emphasis>
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(Dall, 1871)
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</taxonomicName>
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, a typically sedentary form with a well-developed byssal notch in the anterior auricle of the right valve (
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<figureCitation id="D2AB2A4EFFDA291EFEA7FE88EFA2BC28" box="[312,422,300,327]" captionStart="Figure 20" captionStartId="33.[112,187,1871,1895]" captionTargetBox="[117,1517,925,1844]" captionTargetId="figure-322@33.[117,1517,925,1847]" captionTargetPageId="33" captionText="Figure 20. Variation in shell morphology in living North Pacific Propeamussiidae. A, B. Right and left valves of Propeamussium jeffreysi (E.A. Smith, 1885), SBMNH 126833. C, D. Right and left valves of Cyclopecten davidsoni (Dall, 1898), SBMNH 123955. E, F. Right and left valves of Parvamussium alaskense (Dall, 1871), SBMNH 103661. Scale bars=1 cm." figureDoi="http://doi.org/10.5281/zenodo.10913527" httpUri="https://zenodo.org/record/10913527/files/figure.png" pageId="34" pageNumber="33">Fig. 20E</figureCitation>
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). Both auricles are clearly demarcated from the disc, and both are ornamented with radial and commarginal striae. The scabrous pattern of intersecting radial and commarginal striae on the left valve (
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<figureCitation id="D2AB2A4EFFDA291EFF5CFE1DEF2BBCBC" box="[195,303,441,467]" captionStart="Figure 20" captionStartId="33.[112,187,1871,1895]" captionTargetBox="[117,1517,925,1844]" captionTargetId="figure-322@33.[117,1517,925,1847]" captionTargetPageId="33" captionText="Figure 20. Variation in shell morphology in living North Pacific Propeamussiidae. A, B. Right and left valves of Propeamussium jeffreysi (E.A. Smith, 1885), SBMNH 126833. C, D. Right and left valves of Cyclopecten davidsoni (Dall, 1898), SBMNH 123955. E, F. Right and left valves of Parvamussium alaskense (Dall, 1871), SBMNH 103661. Scale bars=1 cm." figureDoi="http://doi.org/10.5281/zenodo.10913527" httpUri="https://zenodo.org/record/10913527/files/figure.png" pageId="34" pageNumber="33">Fig. 20F</figureCitation>
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) is in marked contrast to the subdued ornamentation of the right valve with commarginal striae only (
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<figureCitation id="D2AB2A4EFFDA291EFF2AFDA4EF1BBF75" box="[181,287,512,538]" captionStart="Figure 20" captionStartId="33.[112,187,1871,1895]" captionTargetBox="[117,1517,925,1844]" captionTargetId="figure-322@33.[117,1517,925,1847]" captionTargetPageId="33" captionText="Figure 20. Variation in shell morphology in living North Pacific Propeamussiidae. A, B. Right and left valves of Propeamussium jeffreysi (E.A. Smith, 1885), SBMNH 126833. C, D. Right and left valves of Cyclopecten davidsoni (Dall, 1898), SBMNH 123955. E, F. Right and left valves of Parvamussium alaskense (Dall, 1871), SBMNH 103661. Scale bars=1 cm." figureDoi="http://doi.org/10.5281/zenodo.10913527" httpUri="https://zenodo.org/record/10913527/files/figure.png" pageId="34" pageNumber="33">Fig. 20E</figureCitation>
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). Small size, scabrous sculpture of the left valve, and presence of a byssal notch do not constitute a strong argument for monophyly. However, the lack of a ctenolium in the byssal notch, discrepant valve size and sculpture, and interior slat-like ribs do exclude it from the
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<taxonomicName id="8D904D48FFDA291EFF3DFD14EF21BFA5" ID-CoL="7NKCR" authorityName="RAFINESQUE" authorityYear="1815" box="[162,293,688,714]" class="Bivalvia" family="Pectinidae" kingdom="Animalia" order="Pectinida" pageId="34" pageNumber="33" phylum="Mollusca" rank="family">Pectinidae</taxonomicName>
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and clearly distinguish it from the two new Keasey
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<taxonomicName id="8D904D48FFDA291EFE95FD75EC1ABF82" box="[266,542,721,749]" class="Bivalvia" family="Pectinidae" genus="Delectopecten" kingdom="Animalia" order="Pectinida" pageId="34" pageNumber="33" phylum="Mollusca" rank="species" species="undetermined">
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<emphasis id="78E4EAD9FFDA291EFE95FD75EFB1BF82" box="[266,437,721,749]" italics="true" pageId="34" pageNumber="33">Delectopecten</emphasis>
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species.
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</taxonomicName>
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</paragraph>
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<caption id="1EEF6643FFD9291DFFEFF8EBEA6BBAF3" ID-DOI="http://doi.org/10.5281/zenodo.10913527" ID-Zenodo-Dep="10913527" httpUri="https://zenodo.org/record/10913527/files/figure.png" pageId="33" pageNumber="32" startId="33.[112,187,1871,1895]" targetBox="[117,1517,925,1844]" targetPageId="33" targetType="figure">
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<paragraph id="4A2F36CBFFD9291DFFEFF8EBEA6BBAF3" blockId="33.[112,1502,1871,1949]" pageId="33" pageNumber="32">
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<emphasis id="78E4EAD9FFD9291DFFEFF8EBEEE0BA08" bold="true" box="[112,228,1871,1895]" pageId="33" pageNumber="32">Figure 20.</emphasis>
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Variation in shell morphology in living North Pacific
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<taxonomicName id="8D904D48FFD9291DFC82F8EBEDDEBA08" authorityName="ABBOTT" authorityYear="1954" box="[797,986,1871,1895]" class="Bivalvia" family="Propeamussiidae" kingdom="Animalia" order="Pectinida" pageId="33" pageNumber="32" phylum="Mollusca" rank="family">Propeamussiidae</taxonomicName>
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.
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<emphasis id="78E4EAD9FFD9291DFC7CF8EBEA0BBA08" bold="true" box="[995,1039,1871,1895]" pageId="33" pageNumber="32">A, B</emphasis>
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. Right and left valves of
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<taxonomicName id="8D904D48FFD9291DFA8CF8F4EF88BAED" authority="(E. A. Smith, 1885)" baseAuthorityName="E. A. Smith" baseAuthorityYear="1885" class="Bivalvia" family="Propeamussiidae" genus="Propeamussium" kingdom="Animalia" order="Pectinida" pageId="33" pageNumber="32" phylum="Mollusca" rank="species" species="jeffreysi">
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<emphasis id="78E4EAD9FFD9291DFA8CF8F4EEC7BAEC" italics="true" pageId="33" pageNumber="32">Propeamussium jeffreysi</emphasis>
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(E.A. Smith, 1885)
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</taxonomicName>
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, SBMNH 126833.
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<emphasis id="78E4EAD9FFD9291DFDD0F8CDEC7FBAED" bold="true" box="[591,635,1897,1922]" pageId="33" pageNumber="32">C, D</emphasis>
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. Right and left valves of
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<taxonomicName id="8D904D48FFD9291DFC1FF8CFEAEBBAED" authority="(Dall, 1898)" baseAuthorityName="Dall" baseAuthorityYear="1898" box="[896,1263,1898,1923]" class="Bivalvia" family="Propeamussiidae" genus="Cyclopecten" kingdom="Animalia" order="Pectinida" pageId="33" pageNumber="32" phylum="Mollusca" rank="species" species="davidsoni">
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<emphasis id="78E4EAD9FFD9291DFC1FF8CFEA63BAEC" box="[896,1127,1899,1923]" italics="true" pageId="33" pageNumber="32">Cyclopecten davidsoni</emphasis>
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(
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<bibRefCitation id="2E014B3AFFD9291DFBE8F8CEEAE1BAED" author="Dall, W. H." box="[1143,1253,1898,1922]" pageId="33" pageNumber="32" pagination="571 - 947" refId="ref28694" refString="Dall, W. H. 1898. Contributions to the Tertiary fauna of Florida, with especial reference to the silex-beds of Tampa, and the Pliocene beds of the Caloosahatchie River, including in many cases a complete revision of the generic groups treated and of their American Tertiary species. Transactions of the Wagner Free Institute of Science, Philadelphia 3 (4): 571 - 947, pls. 23 - 35." type="journal article" year="1898">Dall, 1898</bibRefCitation>
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)
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</taxonomicName>
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, SBMNH 123955.
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<emphasis id="78E4EAD9FFD9291DFA2EF8CEEBDDBAED" bold="true" box="[1457,1497,1898,1922]" pageId="33" pageNumber="32">E, F</emphasis>
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. Right and left valves of
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<taxonomicName id="8D904D48FFD9291DFEF6F821ECFCBAF3" authority="(Dall, 1871)" baseAuthorityName="Dall" baseAuthorityYear="1871" box="[361,760,1924,1949]" class="Bivalvia" family="Propeamussiidae" genus="Parvamussium" kingdom="Animalia" order="Pectinida" pageId="33" pageNumber="32" phylum="Mollusca" rank="species" species="alaskense">
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<emphasis id="78E4EAD9FFD9291DFEF6F821EC75BAF2" box="[361,625,1925,1949]" italics="true" pageId="33" pageNumber="32">Parvamussium alaskense</emphasis>
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(Dall, 1871)
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</taxonomicName>
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, SBMNH 103661. Scale bars=1 cm.
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</paragraph>
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</caption>
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<paragraph id="4A2F36CBFFDA291EFF0FFD52ECF3BB5B" blockId="34.[112,801,193,1933]" pageId="34" pageNumber="33">
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Mesozoic species that can be assigned to either
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<taxonomicName id="8D904D48FFDA291EFD73FD51EEFCBE5B" ID-CoL="7PBZB" authorityName="SACCO" authorityYear="1897" class="Bivalvia" family="Propeamussiidae" genus="Parvamussium" kingdom="Animalia" order="Pectinida" pageId="34" pageNumber="33" phylum="Mollusca" rank="genus">
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<emphasis id="78E4EAD9FFDA291EFD73FD51EEFCBE5B" italics="true" pageId="34" pageNumber="33">Parvamussium</emphasis>
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</taxonomicName>
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or
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<taxonomicName id="8D904D48FFDA291EFE82FCBCEFDBBE5B" ID-CoL="7PDH3" authorityName="DE GREGORIO" authorityYear="1884" box="[285,479,792,820]" class="Bivalvia" family="Propeamussiidae" genus="Propeamussium" kingdom="Animalia" order="Pectinida" pageId="34" pageNumber="33" phylum="Mollusca" rank="genus" sensu="stricto">
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<emphasis id="78E4EAD9FFDA291EFE82FCBCEFDBBE5B" box="[285,479,792,820]" italics="true" pageId="34" pageNumber="33">Propeamussium</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="63D757A2FFDA291EFE7BFCBEEC0DBE5B" box="[484,521,794,820]" pageId="34" pageNumber="33" sensu="stricto">s.s.</taxonomicNameLabel>
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first diversified during the Cretaceous, surviving the end Cretaceous extinction to begin a second and continuing radiation in the deep sea (Waller2006).
|
||
<taxonomicName id="8D904D48FFDA291EFEBBFC25EFD1BEF2" ID-CoL="7PBZB" authorityName="SACCO" authorityYear="1897" box="[292,469,897,925]" class="Bivalvia" family="Propeamussiidae" genus="Parvamussium" kingdom="Animalia" order="Pectinida" pageId="34" pageNumber="33" phylum="Mollusca" rank="genus">
|
||
<emphasis id="78E4EAD9FFDA291EFEBBFC25EFD1BEF2" box="[292,469,897,925]" italics="true" pageId="34" pageNumber="33">Parvamussium</emphasis>
|
||
</taxonomicName>
|
||
achieved cosmopolitan distribution by the Eocene, with records as early as Danian in Patagonia (del
|
||
<bibRefCitation id="2E014B3AFFDA291EFED8FC6DEFF3BE8C" author="Rio, C. J. & A. G. Beu & S. A. Martinez" box="[327,503,969,996]" pageId="34" pageNumber="33" pagination="281 - 295" refId="ref29287" refString="del Rio, C. J., A. G. Beu, and S. A. Martinez. 2008. The pectinoidea genera Delectopecten Stewart, 1930 and Parvamussium Sacco, 1897 in the Danian of Northern Patagonia, Argentina. Neues Jahrbuch fur Geologie und Palaontologie 249 (3): 281 - 295." type="journal article" year="2008">Rio et al. 2008</bibRefCitation>
|
||
). Paleocene and Eocene records in the southern Hemisphere from both
|
||
<collectingCountry id="3287765BFFDA291EFD30FC48ED24B969" box="[687,800,1004,1030]" name="Australia" pageId="34" pageNumber="33">Australia</collectingCountry>
|
||
(e.g.,
|
||
<bibRefCitation id="2E014B3AFFDA291EFF2FFBB4EF59B945" author="Darragh, T. A." box="[176,349,1040,1066]" pageId="34" pageNumber="33" pagination="71 - 103" refId="ref28988" refString="Darragh, T. A. 1994. Paleocene bivalves from the Peeble Point Formation, Victoria, Australia. Proceedings of the Royal Society of Victoria 106: 71 - 103." type="journal article" year="1994">Darragh 1994</bibRefCitation>
|
||
,
|
||
<bibRefCitation id="2E014B3AFFDA291EFEF7FBB4EFADB945" author="Darragh, T. A." box="[360,425,1040,1066]" pageId="34" pageNumber="33" pagination="57 - 108" refId="ref29021" refString="Darragh, T. A. 1997. Gastropoda, Scaphopoda, Cephalopoda, and new Bivalvia of the Paleocnee Peeble Point Formation, Victoria, Australia. Proceedings of the Royal Society of Victoria 109: 57 - 108." type="journal article" year="1997">1997</bibRefCitation>
|
||
, Stilwell 2003, 2005) and
|
||
<collectingCountry id="3287765BFFDA291EFD78FBB4EED6B922" name="New Zealand" pageId="34" pageNumber="33">New Zealand</collectingCountry>
|
||
(e.g.,
|
||
<bibRefCitation id="2E014B3AFFDA291EFE89FB97EC2EB922" author="Beu, A. G. & P. A. Maxwell" box="[278,554,1075,1101]" pageId="34" pageNumber="33" pagination="1 - 518" refId="ref27605" refString="Beu, A. G., and P. A. Maxwell. 1990. Cenozoic Mollusca of New Zealand. Drawings by R. C. Brazier. New Zealand Geological Survey Paleontological Bulletin 58: 1 - 518." type="journal article" year="1990">Beu and Maxwell 1990</bibRefCitation>
|
||
, Maxwell 1992). Del
|
||
<bibRefCitation id="2E014B3AFFDA291EFFEFFBF2EF3CB91E" author="Rio, C. J. & A. G. Beu & S. A. Martinez" box="[112,312,1110,1137]" pageId="34" pageNumber="33" pagination="281 - 295" refId="ref29287" refString="del Rio, C. J., A. G. Beu, and S. A. Martinez. 2008. The pectinoidea genera Delectopecten Stewart, 1930 and Parvamussium Sacco, 1897 in the Danian of Northern Patagonia, Argentina. Neues Jahrbuch fur Geologie und Palaontologie 249 (3): 281 - 295." type="journal article" year="2008">Rio et al. (2008)</bibRefCitation>
|
||
provide additional references to Paleogene records from Europe and the Gulf
|
||
<collectingRegion id="8854F829FFDA291EFDF7FBDDECA9B9FC" box="[616,685,1145,1171]" country="New Zealand" name="West Coast" pageId="34" pageNumber="33">Coast</collectingRegion>
|
||
of North America but suggest that the Paleogene taxa inhabited shallow-water facies at this time. In the Northwestern Pacific, however,
|
||
<taxonomicName id="8D904D48FFDA291EFED6FB44EFFAB993" ID-CoL="7PBZB" authorityName="SACCO" authorityYear="1897" box="[329,510,1248,1276]" class="Bivalvia" family="Propeamussiidae" genus="Parvamussium" kingdom="Animalia" order="Pectinida" pageId="34" pageNumber="33" phylum="Mollusca" rank="genus">
|
||
<emphasis id="78E4EAD9FFDA291EFED6FB44EFFAB993" box="[329,510,1248,1276]" italics="true" pageId="34" pageNumber="33">Parvamussium</emphasis>
|
||
</taxonomicName>
|
||
is well documented in
|
||
<collectingCountry id="3287765BFFDA291EFFEFFAA0EEB2B871" box="[112,182,1284,1310]" name="Japan" pageId="34" pageNumber="33">Japan</collectingCountry>
|
||
from Upper Cretaceous forearc slope mudstones along the subduction zone on Kyushu (e.g., Komatsu et al. 2008) and
|
||
<collectingRegion id="8854F829FFDA291EFE84FAEDEF90B80C" box="[283,404,1353,1379]" country="Japan" name="Hokkaido" pageId="34" pageNumber="33">Hokkaido</collectingRegion>
|
||
(e.g., Tsujino and Maeda 2007). These Late Cretaceous forearc sequences also include methane seeps (e.g., Takahashi et al. 2007). The
|
||
<taxonomicName id="8D904D48FFDA291EFD51FA29EED9B8A3" ID-CoL="7PBZB" authorityName="SACCO" authorityYear="1897" class="Bivalvia" family="Propeamussiidae" genus="Parvamussium" kingdom="Animalia" order="Pectinida" pageId="34" pageNumber="33" phylum="Mollusca" rank="genus">
|
||
<emphasis id="78E4EAD9FFDA291EFD51FA29EED9B8A3" italics="true" pageId="34" pageNumber="33">Parvamussium</emphasis>
|
||
</taxonomicName>
|
||
bivalve associations are remarkably like those in the Keasey and indicative of an even earlier shift of the minute squamose glass scallops to low energy, oxygen depleted conditions associated with methane seeps.
|
||
</paragraph>
|
||
<paragraph id="4A2F36CBFFDA291EFF0FF998EF2FBAE2" blockId="34.[112,801,193,1933]" pageId="34" pageNumber="33">
|
||
The major difficulty assessing monophyly and re- lationships of the squamose glass scallops is the large number of genus group names that have been placed in synomymy under
|
||
<taxonomicName id="8D904D48FFDA291EFECDF906EC03BBD1" ID-CoL="7PBZB" authorityName="SACCO" authorityYear="1897" box="[338,519,1698,1726]" class="Bivalvia" family="Propeamussiidae" genus="Parvamussium" kingdom="Animalia" order="Pectinida" pageId="34" pageNumber="33" phylum="Mollusca" rank="genus">
|
||
<emphasis id="78E4EAD9FFDA291EFECDF906EC03BBD1" box="[338,519,1698,1726]" italics="true" pageId="34" pageNumber="33">Parvamussium</emphasis>
|
||
</taxonomicName>
|
||
. For example,
|
||
<bibRefCitation id="2E014B3AFFDA291EFD22F907EEC3BB8F" author="Dijkstra, H. H." pageId="34" pageNumber="33" pagination="1 - 108" refId="ref29491" refString="Dijkstra, H. H. 2013. Pectinoidea (Bivalvia: Propeamussiidae and Pectinidae) from the Panglao region, Philippine Islands. Vita Malacologia 10: 1 - 108. 32 pls." type="book chapter" year="2013">Dijkstra (2013)</bibRefCitation>
|
||
lists five names based on extant species, includ- ing
|
||
<taxonomicName id="8D904D48FFDA291EFF03F94DEC20BA6C" ID-CoL="BGRK3" authority="Oyama (1944)" authorityName="Oyama" authorityYear="1944" box="[156,548,1768,1797]" class="Bivalvia" family="Propeamussiidae" genus="Squamamussium" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Pectinida" pageId="34" pageNumber="33" phylum="Mollusca" rank="genus">
|
||
<emphasis id="78E4EAD9FFDA291EFF03F94DEF68BA6A" box="[156,364,1769,1797]" italics="true" pageId="34" pageNumber="33">Squamamussium</emphasis>
|
||
Oyama (1944)
|
||
</taxonomicName>
|
||
. Harold Vokes (pers. comm. 1981) intended to assign the new Keasey species to
|
||
<emphasis id="78E4EAD9FFDA291EFF11F88AEF71BA25" box="[142,373,1838,1866]" italics="true" pageId="34" pageNumber="33">Squammamussium</emphasis>
|
||
and obtained
|
||
<collectionCode id="2C81AE0EFFDA291EFDBDF889EC6BBA28" box="[546,623,1837,1863]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34871" lsid="urn:lsid:biocol.org:col:34871" name="Smithsonian Institution, National Museum of Natural History" pageId="34" pageNumber="33" type="Museum">USNM</collectionCode>
|
||
<typeStatus id="952B8869FFDA291EFDEBF88AECAFBA27" box="[628,683,1838,1864]" pageId="34" pageNumber="33">type</typeStatus>
|
||
numbers for the specimens described and figured here under
|
||
<taxonomicName id="8D904D48FFDA291EFFEFF8D5EF21BAE2" ID-CoL="7PBZB" authorityName="SACCO" authorityYear="1897" box="[112,293,1905,1933]" class="Bivalvia" family="Propeamussiidae" genus="Parvamussium" kingdom="Animalia" order="Pectinida" pageId="34" pageNumber="33" phylum="Mollusca" rank="genus">
|
||
<emphasis id="78E4EAD9FFDA291EFFEFF8D5EF21BAE2" box="[112,293,1905,1933]" italics="true" pageId="34" pageNumber="33">Parvamussium</emphasis>
|
||
</taxonomicName>
|
||
.
|
||
</paragraph>
|
||
<paragraph id="4A2F36CBFFDA291EFCFFFF67EB5BBC4D" blockId="34.[832,1520,195,290]" pageId="34" pageNumber="33">
|
||
<emphasis id="78E4EAD9FFDA291EFCFFFF67EA77BDB2" bold="true" box="[864,1139,195,221]" pageId="34" pageNumber="33">Stratigraphic range</emphasis>
|
||
—Upper Jurassic?–Holocene. Cosmopolitan, bathyal and abyssal depths (modern), shallower in Mesozoic and Early Paleogene.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |