153 lines
14 KiB
XML
153 lines
14 KiB
XML
<document ID-DOI="10.1080/00222933.2018.1524032" ID-GBIF-Dataset="034ebcd9-efa7-416a-822c-b6aee0e57a1c" ID-ISSN="1464-5262" ID-Zenodo-Dep="3670229" checkinTime="1581941790231" checkinUser="valdenar" docAuthor="DeVries, Thomas J." docDate="2019" docId="03BB2338E358E22AFE5BA30658A0FDAA" docLanguage="en" docName="JNATHIST.53.25–26.1533–1584.pdf.imf" docOrigin="Journal of Natural History 53 (25)" docStyle="DocumentStyle:485A7191CD41D6261F41521A3380DC73.9:JNatHist.2017-.journal_article.1cover" docStyleId="485A7191CD41D6261F41521A3380DC73" docStyleName="JNatHist.2017-.journal_article.1cover" docStyleVersion="9" docTitle="Incatina DeVries 2019, gen. nov." docType="treatment" docVersion="19" lastPageNumber="1549" masterDocId="FF825B40E348E23BFFA1A1435A0CFFCC" masterDocTitle="Early Paleogene brackish-water molluscs from the Caballas Formation of the East Pisco Basin (Southern Peru)" masterLastPageNumber="1584" masterPageNumber="1533" pageNumber="1548" updateTime="1636522412784" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>Early Paleogene brackish-water molluscs from the Caballas Formation of the East Pisco Basin (Southern Peru)</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>DeVries, Thomas J.</mods:namePart>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>Journal of Natural History</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2019</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2018-12-17</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>53</mods:number>
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</mods:detail>
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<mods:detail type="issue">
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<mods:number>25</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>1533</mods:start>
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<mods:end>1584</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">10.1080/00222933.2018.1524032</mods:identifier>
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<mods:identifier type="GBIF-Dataset">034ebcd9-efa7-416a-822c-b6aee0e57a1c</mods:identifier>
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<mods:identifier type="ISSN">1464-5262</mods:identifier>
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<mods:identifier type="Zenodo-Dep">3670229</mods:identifier>
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</mods:mods>
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<treatment ID-DOI="http://doi.org/10.5281/zenodo.3679546" ID-GBIF-Taxon="162146516" ID-Zenodo-Dep="3679546" LSID="urn:lsid:plazi:treatment:03BB2338E358E22AFE5BA30658A0FDAA" httpUri="http://treatment.plazi.org/id/03BB2338E358E22AFE5BA30658A0FDAA" lastPageId="17" lastPageNumber="1549" pageId="16" pageNumber="1548">
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<subSubSection box="[506,810,581,606]" pageId="16" pageNumber="1548" type="nomenclature">
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<paragraph blockId="16.[365,950,511,606]" box="[506,810,581,606]" pageId="16" pageNumber="1548">
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<heading box="[506,810,581,606]" pageId="16" pageNumber="1548">
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Genus
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<taxonomicName authority="DeVries, 2019" authorityName="DeVries" authorityYear="2019" box="[590,690,581,606]" class="Bivalvia" family="Crassatellidae" genus="Incatina" higherTaxonomySource="GBIF" kingdom="Animalia" order="Carditoida" pageId="16" pageNumber="1548" phylum="Mollusca" rank="genus" status="gen. nov.">
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<emphasis bold="true" box="[590,690,581,606]" italics="true" pageId="16" pageNumber="1548">Incatina</emphasis>
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</taxonomicName>
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<taxonomicNameLabel box="[698,810,581,606]" pageId="16" pageNumber="1548" rank="genus">gen. nov.</taxonomicNameLabel>
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</heading>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="16" pageNumber="1548" type="type_taxon">
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<paragraph blockId="16.[160,1111,648,707]" pageId="16" pageNumber="1548">
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<typeStatus box="[160,214,648,672]" pageId="16" pageNumber="1548">Type</typeStatus>
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species:
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<taxonomicName authority="DeVries, 2019" authorityName="DeVries" authorityYear="2019" box="[319,510,648,672]" class="Bivalvia" family="Crassatellidae" genus="Incatina" higherTaxonomySource="GBIF" kingdom="Animalia" order="Carditoida" pageId="16" pageNumber="1548" phylum="Mollusca" rank="species" species="collinsae" status="sp. nov.">
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<emphasis box="[319,510,648,672]" italics="true" pageId="16" pageNumber="1548">Incatina collinsae</emphasis>
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</taxonomicName>
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<taxonomicNameLabel box="[518,610,648,672]" pageId="16" pageNumber="1548" rank="species">sp. nov.</taxonomicNameLabel>
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, by monotypy. Early Eocene, southern
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<collectingCountry box="[1054,1108,648,672]" name="Peru" pageId="16" pageNumber="1548">Peru</collectingCountry>
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. Species included:
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<taxonomicName authority="DeVries, 2019" authorityName="DeVries" authorityYear="2019" box="[364,555,683,707]" class="Bivalvia" family="Crassatellidae" genus="Incatina" higherTaxonomySource="GBIF" kingdom="Animalia" order="Carditoida" pageId="16" pageNumber="1548" phylum="Mollusca" rank="species" species="collinsae" status="sp. nov.">
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<emphasis box="[364,555,683,707]" italics="true" pageId="16" pageNumber="1548">Incatina collinsae</emphasis>
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</taxonomicName>
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<taxonomicNameLabel box="[564,653,683,707]" pageId="16" pageNumber="1548" rank="species">sp. nov.</taxonomicNameLabel>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="16" pageNumber="1548" type="diagnosis">
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<paragraph blockId="16.[160,1155,755,920]" box="[160,276,755,781]" pageId="16" pageNumber="1548">
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<emphasis bold="true" box="[160,276,755,781]" italics="true" pageId="16" pageNumber="1548">Diagnosis</emphasis>
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</paragraph>
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<paragraph blockId="16.[160,1155,755,920]" pageId="16" pageNumber="1548">Shell small, compressed, higher than long; posterior truncate; beak medial. Sculpture of right valve composed of evenly spaced and equally sized commarginal ribs; sculpture on left valve may consist of broad triangular ribs with subsidiary commarginal ribs. Lunule commissure strongly sinusoidal; escutcheon narrow.</paragraph>
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</subSubSection>
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<subSubSection pageId="16" pageNumber="1548" type="description">
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<paragraph blockId="16.[160,1156,968,1376]" box="[160,294,968,994]" pageId="16" pageNumber="1548">
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<emphasis bold="true" box="[160,294,968,994]" italics="true" pageId="16" pageNumber="1548">Description</emphasis>
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</paragraph>
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<paragraph blockId="16.[160,1156,968,1376]" pageId="16" pageNumber="1548">
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Shell less than
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<quantity box="[337,419,1005,1029]" metricMagnitude="-2" metricUnit="m" metricValue="2.0" pageId="16" pageNumber="1548" unit="mm" value="20.0">20 mm</quantity>
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long, compressed-convex, higher than long (H:L = 1.07). Beaks medial, pointed, orthocline. Dorsal margins steeply inclined; anterior margin sharply rounded; posterior margin truncate; ventral margin evenly rounded. Lunule moderately wide, extends 40% of anterodorsal margin length. Escutcheon deep, narrow, extends 60% of posterodorsal margin length. Anterior and posterior ends steeply rounded; posterior and anterior umbonal ridges absent. Sculpture of sharply rounded regularly spaced, equally sized commarginal ribs from umbo to ventral margin and extending to anterior and posterior margins; interspaces nearly as wide. Commarginal ribs, less than full length, occasionally inserted or truncated. Right valve in some specimens with eight to nine bluntly triangular radial ribs. Lunule commissure sinuous, lunule asymmetric from left to right valve. Hinge and teeth not exposed.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="16" pageNumber="1548" type="discussion">
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<paragraph blockId="16.[160,1155,1424,1727]" box="[160,262,1424,1450]" pageId="16" pageNumber="1548">
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<emphasis bold="true" box="[160,262,1424,1450]" italics="true" pageId="16" pageNumber="1548">Remarks</emphasis>
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</paragraph>
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<paragraph blockId="16.[160,1155,1424,1727]" pageId="16" pageNumber="1548">
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Many astartid crassatelloids are as high as or higher than long and have regular and equally spaced low commarginal ribs, as do specimens from the Caballas Formation, but none have both a sinuous lunule commissure and truncate posterior margin. Most crassatellid species of the Australasian
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<taxonomicName authority="Iredalei 1924" authorityName="Iredalei" authorityYear="1924" box="[626,930,1565,1589]" class="Bivalvia" family="Crassatellidae" genus="Eucrassatella" kingdom="Animalia" order="Carditoida" pageId="16" pageNumber="1548" phylum="Mollusca" rank="genus">
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<emphasis box="[626,767,1565,1589]" italics="true" pageId="16" pageNumber="1548">Eucrassatella</emphasis>
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Iredale, 1924
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</taxonomicName>
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and the American
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<taxonomicName authority="Stewarti 1930" authorityName="Stewarti" authorityYear="1930" box="[160,459,1599,1623]" class="Bivalvia" family="Crassatellidae" genus="Hybolophus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Venerida" pageId="16" pageNumber="1548" phylum="Mollusca" rank="genus">
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<emphasis box="[160,289,1599,1623]" italics="true" pageId="16" pageNumber="1548">Hybolophus</emphasis>
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Stewart, 1930
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</taxonomicName>
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have truncate or produced posterior margins and sinuous lunule commissures, but such species are substantially longer than high, larger, and more convex, excepting such species as the Quaternary Californian
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<taxonomicName authority="(Carpenteri 1864)" baseAuthorityName="Carpenteri" baseAuthorityYear="1864" class="Bivalvia" family="Crassatellidae" genus="Hybolophus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Venerida" pageId="16" pageNumber="1548" phylum="Mollusca" rank="species" species="fluctuata">
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<emphasis box="[922,1155,1668,1693]" italics="true" pageId="16" pageNumber="1548">Hybolophus fluctuata</emphasis>
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(Carpenter, 1864)
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</taxonomicName>
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.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="17" pageNumber="1549" type="materials_examined">
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<paragraph blockId="17.[160,1156,142,513]" pageId="17" pageNumber="1549">
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The most remarkable feature of
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<taxonomicName authority="DeVries, 2019" authorityName="DeVries" authorityYear="2019" box="[582,670,142,166]" class="Bivalvia" family="Crassatellidae" genus="Incatina" higherTaxonomySource="GBIF" kingdom="Animalia" order="Carditoida" pageId="17" pageNumber="1549" phylum="Mollusca" rank="genus" status="gen. nov.">
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<emphasis box="[582,670,142,166]" italics="true" pageId="17" pageNumber="1549">Incatina</emphasis>
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</taxonomicName>
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<taxonomicNameLabel box="[683,793,142,166]" pageId="17" pageNumber="1549" rank="genus">gen. nov.</taxonomicNameLabel>
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is the presence of a different sculpture on valves of the same individual: radial on the left, with infrequent commarginal ribs, and commarginal on the right, with no radial sculpture. Such contrasting sculptural plans are a certainty for one specimen (
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<collectionCode box="[753,831,246,270]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34878" lsid="urn:lsid:biocol.org:col:34878" name="University of Washington, Burke Museum" pageId="17" pageNumber="1549" type="Museum">UWBM</collectionCode>
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107638) and possible for a second specimen with a poorly preserved left valve (
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<collectionCode box="[760,838,281,305]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34878" lsid="urn:lsid:biocol.org:col:34878" name="University of Washington, Burke Museum" pageId="17" pageNumber="1549" type="Museum">UWBM</collectionCode>
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107637). Contrasting sculptural plans are definitely not present on a third specimen (
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<collectionCode box="[883,961,316,340]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34878" lsid="urn:lsid:biocol.org:col:34878" name="University of Washington, Burke Museum" pageId="17" pageNumber="1549" type="Museum">UWBM</collectionCode>
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107639). Extant crassatelloids do exhibit unusual sculpture, albeit on both valves. Commarginal ribs of the crassatellid
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<taxonomicName authority="Kobelti 1881" authorityName="Kobelti" authorityYear="1881" box="[346,618,385,409]" class="Bivalvia" family="Crassatellidae" genus="Crassatina" kingdom="Animalia" order="Carditoida" pageId="17" pageNumber="1549" phylum="Mollusca" rank="genus">
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<emphasis box="[346,460,385,409]" italics="true" pageId="17" pageNumber="1549">Crassatina</emphasis>
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Kobelt, 1881
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</taxonomicName>
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irregularly drift in a posteroventral direction; inverted divaricate ribs ornament the West African and Mediterranean astartid,
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<taxonomicName authority="Stoliczkai 1871" authorityName="Stoliczkai" authorityYear="1871" class="Bivalvia" family="Astartidae" genus="Gonilia" kingdom="Animalia" order="Carditoida" pageId="17" pageNumber="1549" phylum="Mollusca" rank="genus">
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<emphasis box="[1078,1155,420,444]" italics="true" pageId="17" pageNumber="1549">Gonilia</emphasis>
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Stoliczka, 1871
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</taxonomicName>
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; and sashlike acentric ribs obliquely cross commarginal ribs on the West African and southern European astartid,
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<taxonomicName authority="Woodi 1853" authorityName="Woodi" authorityYear="1853" box="[623,862,489,513]" class="Bivalvia" family="Astartidae" genus="Digitaria" kingdom="Animalia" order="Carditoida" pageId="17" pageNumber="1549" phylum="Mollusca" rank="genus">
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<emphasis box="[623,717,489,513]" italics="true" pageId="17" pageNumber="1549">Digitaria</emphasis>
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Wood, 1853
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</taxonomicName>
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.
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</paragraph>
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</subSubSection>
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<subSubSection box="[160,684,555,614]" pageId="17" pageNumber="1549" type="etymology">
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<paragraph blockId="17.[160,684,555,614]" box="[160,290,555,580]" pageId="17" pageNumber="1549">
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<emphasis bold="true" box="[160,290,555,580]" italics="true" pageId="17" pageNumber="1549">Etymology</emphasis>
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</paragraph>
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<paragraph blockId="17.[160,684,555,614]" box="[160,684,590,614]" pageId="17" pageNumber="1549">
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<emphasis box="[160,166,590,614]" italics="true" pageId="17" pageNumber="1549">’</emphasis>
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Inca
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<emphasis box="[212,217,590,614]" italics="true" pageId="17" pageNumber="1549">’</emphasis>
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, referencing the Inca civilisation of
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<collectingCountry box="[627,681,590,614]" name="Peru" pageId="17" pageNumber="1549">Peru</collectingCountry>
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.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |