313 lines
30 KiB
XML
313 lines
30 KiB
XML
<document ID-DOI="http://dx.doi.org/10.5852/ejt.2013.41" ID-GBIF-Dataset="386010a0-6da4-4fa3-9d1a-4b3b5427cac5" ID-ISSN="2118-9773" ID-Zenodo-Dep="3814221" ID-ZooBank="A2F1B9ED-870A-466E-B35E-BD5DA782476E" checkinTime="1588881240389" checkinUser="carolina" docAuthor="Kröger, Björn" docDate="2013" docId="AD4D9054CD3F6A38F03641A8FD4EFAAC" docLanguage="en" docName="ejt-2013-41.pdf.imf" docOrigin="European Journal of Taxonomy 41" docStyle="DocumentStyle:EF2B578F1D15862ADE45B0C07C620911.12:EJT.2018-.journal_article" docStyleId="EF2B578F1D15862ADE45B0C07C620911" docStyleName="EJT.2018-.journal_article" docStyleVersion="12" docTitle="Redpathoceras Flower 1963" docType="treatment" docVersion="6" lastPageNumber="95" masterDocId="5174E82CCD646A66F260472AFFA5FFBD" masterDocTitle="The cephalopods of the Boda Limestone, Late Ordovician, of Dalarna, Sweden" masterLastPageNumber="110" masterPageNumber="1" pageNumber="92" updateTime="1634716833028" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-3.0" zenodo-license-figures="CC-BY-3.0" zenodo-license-treatments="UNSPECIFIED">
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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>The cephalopods of the Boda Limestone, Late Ordovician, of Dalarna, Sweden</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>Kröger, Björn</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>European Journal of Taxonomy</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2013</mods:date>
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||
<mods:detail type="pubDate">
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||
<mods:number>2013-03-27</mods:number>
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</mods:detail>
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<mods:detail type="issue">
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||
<mods:number>41</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>1</mods:start>
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<mods:end>110</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">http://dx.doi.org/10.5852/ejt.2013.41</mods:identifier>
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<mods:identifier type="GBIF-Dataset">386010a0-6da4-4fa3-9d1a-4b3b5427cac5</mods:identifier>
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<mods:identifier type="ISSN">2118-9773</mods:identifier>
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<mods:identifier type="Zenodo-Dep">3814221</mods:identifier>
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<mods:identifier type="ZooBank">A2F1B9ED-870A-466E-B35E-BD5DA782476E</mods:identifier>
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</mods:mods>
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<treatment ID-DOI="http://doi.org/10.5281/zenodo.3815168" ID-GBIF-Taxon="163977209" ID-Zenodo-Dep="3815168" LSID="urn:lsid:plazi:treatment:AD4D9054CD3F6A38F03641A8FD4EFAAC" httpUri="http://treatment.plazi.org/id/AD4D9054CD3F6A38F03641A8FD4EFAAC" lastPageId="94" lastPageNumber="95" pageId="91" pageNumber="92">
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<subSubSection box="[598,990,1666,1693]" pageId="91" pageNumber="92" type="nomenclature">
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<paragraph blockId="91.[358,1230,1666,1763]" box="[598,990,1666,1693]" pageId="91" pageNumber="92">
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||
<heading box="[598,990,1666,1693]" centered="true" fontSize="11" level="2" pageId="91" pageNumber="92" reason="2">
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<emphasis bold="true" box="[598,892,1666,1693]" italics="true" pageId="91" pageNumber="92">
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<taxonomicName authorityName="Flower" authorityYear="1963" box="[598,777,1666,1693]" class="Cephalopoda" family="Probillingsitidae" genus="Redpathoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ascocerida" pageId="91" pageNumber="92" phylum="Mollusca" rank="genus">Redpathoceras</taxonomicName>
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magnum
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</emphasis>
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sp. nov.
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</heading>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="91" pageNumber="92" type="description">
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<paragraph blockId="91.[358,1230,1666,1763]" box="[358,1230,1702,1729]" pageId="91" pageNumber="92">
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<uri box="[358,1230,1702,1729]" pageId="91" pageNumber="92">
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urn:lsid:zoobank.org:act:
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<uuid box="[642,1230,1702,1729]" pageId="91" pageNumber="92">5B495FBE-A8DE-4886-ABF4-FB22AC2D588F</uuid>
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</uri>
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</paragraph>
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<paragraph blockId="91.[358,1230,1666,1763]" box="[703,885,1737,1763]" pageId="91" pageNumber="92">
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<figureCitation box="[703,793,1737,1763]" captionStart="Fig" captionStartId="90.[189,232,1949,1975]" captionTargetBox="[355,1227,1107,1900]" captionTargetId="graphics@90.[468,1226,1107,1771]" captionTargetPageId="90" captionText="Fig. 42. Variation in angle of expansion in Redpathoceras Flower, 1963, Boda Limestone. R. magnum sp. nov. (grey dots); R. bullatum sp. nov. (black dots); R. depressum sp. nov. (black circles)." figureDoi="http://doi.org/10.5281/zenodo.3814311" httpUri="https://zenodo.org/record/3814311/files/figure.png" pageId="91" pageNumber="92">Figs 42</figureCitation>
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,
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<figureCitation box="[805,833,1737,1763]" captionStart="Fig" captionStartId="92.[189,232,1785,1811]" captionTargetBox="[189,1400,302,1729]" captionTargetId="figure@92.[189,1400,302,1739]" captionTargetPageId="92" captionText="Fig. 43. Redpathoceras Flower, 1963, Kallholn, Boda Limestone. A-C. Redpathoceras magnum sp. nov. A. PMU 26935, holotype; mature truncated body chamber, lateral view. B. Same specimen, view from antispihuncular side. C. PMU 26946, premature truncated phragmocone, lateral view. D-F. Redpathoceras depressum sp. nov. D. PMU 26927, holotype; mature truncated body chamber, lateral view. E. Same specimen, view from antispihuncular side. F. PMU 26931, premature truncated phragmocone, lateral view. Scale bar = 50 mm for all figures." figureDoi="http://doi.org/10.5281/zenodo.3814313" httpUri="https://zenodo.org/record/3814313/files/figure.png" pageId="91" pageNumber="92">43</figureCitation>
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A-C
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="93" lastPageNumber="94" pageId="91" pageNumber="92" type="diagnosis">
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<paragraph blockId="91.[189,310,1802,1828]" box="[189,310,1802,1828]" pageId="91" pageNumber="92">
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<heading bold="true" box="[189,310,1802,1828]" fontSize="11" level="3" pageId="91" pageNumber="92" reason="3">
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<emphasis bold="true" box="[189,310,1802,1828]" pageId="91" pageNumber="92">Diagnosis</emphasis>
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</heading>
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</paragraph>
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<paragraph blockId="91.[189,1399,1849,2017]" lastBlockId="93.[189,1398,267,364]" lastPageId="93" lastPageNumber="94" pageId="91" pageNumber="92">
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Mature body chamber with slightly depressed cross section, moderately curved with maximum curvature close to aperture; inflated in lateral view with maximum height of ca.
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<quantity box="[1009,1136,1884,1911]" metricMagnitude="-2" metricUnit="m" metricValue="7.5" metricValueMax="8.0" metricValueMin="7.0" pageId="91" pageNumber="92" unit="mm" value="75.0" valueMax="80.0" valueMin="70.0">70–80 mm</quantity>
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at mid-length of body chamber; mature body chamber margin at concave side of conch curvature nearly straight on adapical two-thirds; conch cross section compressed to circular in earlier growth stages; premature conch expands with angle of expansion 15°; mature conch with ca. five phragmocone chambers adoral of the terminal septum of truncation; diameter of terminal septum of truncation ca.
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<quantity box="[1100,1186,267,294]" metricMagnitude="-2" metricUnit="m" metricValue="5.5" pageId="93" pageNumber="94" unit="mm" value="55.0">55 mm</quantity>
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; ornamented with fine longitudinal striae and irregularly spaced transverse growth lines, which form a wide hyponomic sinus.
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</paragraph>
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</subSubSection>
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<caption ID-DOI="http://doi.org/10.5281/zenodo.3814313" ID-Zenodo-Dep="3814313" httpUri="https://zenodo.org/record/3814313/files/figure.png" pageId="92" pageNumber="93" startId="92.[189,232,1785,1811]" targetBox="[189,1400,302,1729]" targetPageId="92">
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<paragraph blockId="92.[189,1399,1785,1988]" pageId="92" pageNumber="93">
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<emphasis bold="true" box="[189,285,1785,1811]" pageId="92" pageNumber="93">Fig. 43.</emphasis>
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<taxonomicName authority="Flower, 1963" authorityName="Flower" authorityYear="1963" box="[296,644,1785,1811]" class="Cephalopoda" family="Probillingsitidae" genus="Redpathoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ascocerida" pageId="92" pageNumber="93" phylum="Mollusca" rank="genus">
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<emphasis box="[296,472,1785,1811]" italics="true" pageId="92" pageNumber="93">Redpathoceras</emphasis>
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<bibRefCitation author="Flower R. H." box="[483,644,1785,1811]" pageId="92" pageNumber="93" pagination="69 - 85" refId="ref47499" refString="Flower R. H. 1963. New Ordovician Ascoceratida. Journal of Paleontology 37 (1): 69 - 85." type="journal article" year="1963">Flower, 1963</bibRefCitation>
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</taxonomicName>
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, Kallholn, Boda Limestone.
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<emphasis bold="true" box="[996,1048,1785,1811]" pageId="92" pageNumber="93">A -C</emphasis>
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.
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<emphasis box="[1066,1354,1785,1811]" italics="true" pageId="92" pageNumber="93">
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<taxonomicName authorityName="Flower" authorityYear="1963" box="[1066,1242,1785,1811]" class="Cephalopoda" family="Probillingsitidae" genus="Redpathoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ascocerida" pageId="92" pageNumber="93" phylum="Mollusca" rank="genus">Redpathoceras</taxonomicName>
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magnum
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</emphasis>
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sp. nov.
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<emphasis bold="true" box="[252,273,1820,1846]" pageId="92" pageNumber="93">A</emphasis>
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. PMU 26935, holotype; mature truncated body chamber, lateral view.
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<emphasis bold="true" box="[1161,1181,1820,1846]" pageId="92" pageNumber="93">B</emphasis>
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. Same specimen, view from antispihuncular side.
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<emphasis bold="true" box="[595,616,1855,1881]" pageId="92" pageNumber="93">C</emphasis>
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. PMU 26946, premature truncated phragmocone, lateral view.
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<emphasis bold="true" box="[189,238,1891,1917]" pageId="92" pageNumber="93">D -F</emphasis>
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.
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<taxonomicName authority="Kröger, 2013" authorityName="Kröger" authorityYear="2013" box="[256,567,1890,1916]" class="Cephalopoda" family="Probillingsitidae" genus="Redpathoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ascocerida" pageId="92" pageNumber="93" phylum="Mollusca" rank="species" species="depressum" status="sp. nov.">
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<emphasis box="[256,567,1890,1916]" italics="true" pageId="92" pageNumber="93">Redpathoceras depressum</emphasis>
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</taxonomicName>
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<taxonomicNameLabel box="[578,672,1891,1917]" pageId="92" pageNumber="93" rank="species">sp. nov.</taxonomicNameLabel>
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<emphasis bold="true" box="[683,704,1891,1917]" pageId="92" pageNumber="93">D</emphasis>
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. PMU 26927, holotype; mature truncated body chamber, lateral view.
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<emphasis bold="true" box="[343,363,1926,1952]" pageId="92" pageNumber="93">E</emphasis>
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. Same specimen, view from antispihuncular side.
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<emphasis bold="true" box="[965,983,1926,1952]" pageId="92" pageNumber="93">F</emphasis>
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. PMU 26931, premature truncated phragmocone, lateral view. Scale bar = 50 mm for all figures.
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</paragraph>
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</caption>
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<subSubSection box="[189,863,403,476]" pageId="93" pageNumber="94" type="etymology">
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||
<paragraph blockId="93.[189,324,403,429]" box="[189,324,403,429]" pageId="93" pageNumber="94">
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||
<heading bold="true" box="[189,324,403,429]" fontSize="11" level="3" pageId="93" pageNumber="94" reason="3">
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<emphasis bold="true" box="[189,324,403,429]" pageId="93" pageNumber="94">Etymology</emphasis>
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||
</heading>
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||
</paragraph>
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<paragraph blockId="93.[189,863,450,476]" box="[189,863,450,476]" pageId="93" pageNumber="94">
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Latin
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<taxonomicName authorityName="Kröger" authorityYear="2013" box="[258,349,451,476]" class="Cephalopoda" family="Probillingsitidae" genus="Redpathoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ascocerida" pageId="93" pageNumber="94" phylum="Mollusca" rank="species" species="magnus">
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<emphasis box="[258,349,451,476]" italics="true" pageId="93" pageNumber="94">magnus</emphasis>
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</taxonomicName>
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refers to the large adult size of this species.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="93" pageNumber="94" type="materials_examined">
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<paragraph blockId="93.[189,364,515,541]" box="[189,364,515,541]" pageId="93" pageNumber="94">
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||
<heading bold="true" box="[189,364,515,541]" fontSize="11" level="3" pageId="93" pageNumber="94" reason="3">
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<emphasis bold="true" box="[189,364,515,541]" pageId="93" pageNumber="94">Type material</emphasis>
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</heading>
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</paragraph>
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<materialsCitation ID-GBIF-Occurrence="2610779312" collectionCode="PMU" pageId="93" pageNumber="94" specimenCode="PMU 26935" specimenCount="1" typeStatus="holotype">
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<paragraph blockId="93.[189,1363,562,694]" box="[234,348,562,588]" pageId="93" pageNumber="94">
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<emphasis bold="true" box="[234,348,562,588]" pageId="93" pageNumber="94">
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<typeStatus box="[234,348,562,588]" pageId="93" pageNumber="94">Holotype</typeStatus>
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</emphasis>
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</paragraph>
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<paragraph blockId="93.[189,1363,562,694]" box="[189,341,597,624]" pageId="93" pageNumber="94">
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<accessionNumber box="[189,337,597,624]" httpUri="http://www.ncbi.nlm.nih.gov/protein/PMU26935" pageId="93" pageNumber="94">
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<specimenCode box="[189,337,597,624]" pageId="93" pageNumber="94">PMU 26935</specimenCode>
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</accessionNumber>
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.
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</paragraph>
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</materialsCitation>
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<paragraph blockId="93.[189,1363,562,694]" box="[234,359,632,658]" pageId="93" pageNumber="94">
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<emphasis bold="true" box="[234,359,632,658]" pageId="93" pageNumber="94">
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<typeStatus box="[234,359,632,658]" pageId="93" pageNumber="94">Paratypes</typeStatus>
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</emphasis>
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</paragraph>
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<paragraph blockId="93.[189,1363,562,694]" box="[189,1363,667,694]" pageId="93" pageNumber="94">
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Fourteen
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<typeStatus box="[301,413,668,694]" pageId="93" pageNumber="94">paratypes</typeStatus>
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(
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<accessionNumber box="[428,577,667,694]" httpUri="http://www.ncbi.nlm.nih.gov/protein/PMU26936" pageId="93" pageNumber="94">
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<collectionCode box="[428,494,667,693]" country="Sweden" httpUri="http://grbio.org/cool/32ji-dbbk" name="Paleontological Museum of Uppsala" pageId="93" pageNumber="94">PMU</collectionCode>
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26936
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</accessionNumber>
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–26948), Kallholn,
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<collectingRegion box="[804,900,667,693]" country="Sweden" name="Dalarna" pageId="93" pageNumber="94">Dalarna</collectingRegion>
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,
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<collectingCountry box="[912,1008,667,693]" name="Sweden" pageId="93" pageNumber="94">Sweden</collectingCountry>
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, Boda Limestone, late Katian.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="93" pageNumber="94" type="distribution">
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<paragraph blockId="93.[189,507,733,759]" box="[189,507,733,759]" pageId="93" pageNumber="94">
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<heading bold="true" box="[189,507,733,759]" fontSize="11" level="3" pageId="93" pageNumber="94" reason="3">
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<emphasis bold="true" box="[189,507,733,759]" pageId="93" pageNumber="94">Type locality and horizon</emphasis>
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</heading>
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</paragraph>
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<paragraph blockId="93.[189,1258,779,805]" box="[189,1258,779,805]" pageId="93" pageNumber="94">
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Kallholn,
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<collectingRegion box="[306,402,779,805]" country="Sweden" name="Dalarna" pageId="93" pageNumber="94">Dalarna</collectingRegion>
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,
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<collectingCountry box="[414,510,779,805]" name="Sweden" pageId="93" pageNumber="94">Sweden</collectingCountry>
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, Boda Limestone, Boda Core Member, late Katian, Ordovician.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="93" pageNumber="94" type="description">
|
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<paragraph blockId="93.[189,334,844,870]" box="[189,334,844,870]" pageId="93" pageNumber="94">
|
||
<heading bold="true" box="[189,334,844,870]" fontSize="11" level="3" pageId="93" pageNumber="94" reason="3">
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<emphasis bold="true" box="[189,334,844,870]" pageId="93" pageNumber="94">Description</emphasis>
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</heading>
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</paragraph>
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<paragraph blockId="93.[189,1399,891,1129]" pageId="93" pageNumber="94">
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The
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<typeStatus box="[244,347,891,917]" pageId="93" pageNumber="94">holotype</typeStatus>
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is a fragment of a mature shell with a nearly complete body chamber combined with a phragocone consisting of five chambers (
|
||
<figureCitation box="[673,759,926,953]" captionStart="Fig" captionStartId="92.[189,232,1785,1811]" captionTargetBox="[189,1400,302,1729]" captionTargetId="figure@92.[189,1400,302,1739]" captionTargetPageId="92" captionText="Fig. 43. Redpathoceras Flower, 1963, Kallholn, Boda Limestone. A-C. Redpathoceras magnum sp. nov. A. PMU 26935, holotype; mature truncated body chamber, lateral view. B. Same specimen, view from antispihuncular side. C. PMU 26946, premature truncated phragmocone, lateral view. D-F. Redpathoceras depressum sp. nov. D. PMU 26927, holotype; mature truncated body chamber, lateral view. E. Same specimen, view from antispihuncular side. F. PMU 26931, premature truncated phragmocone, lateral view. Scale bar = 50 mm for all figures." figureDoi="http://doi.org/10.5281/zenodo.3814313" httpUri="https://zenodo.org/record/3814313/files/figure.png" pageId="93" pageNumber="94">Fig. 43</figureCitation>
|
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A-B). The maximum width of the body chamber is ca.
|
||
<quantity box="[189,276,962,988]" metricMagnitude="-2" metricUnit="m" metricValue="7.0" pageId="93" pageNumber="94" unit="mm" value="70.0">70 mm</quantity>
|
||
, the maximum height
|
||
<quantity box="[543,627,961,988]" metricMagnitude="-2" metricUnit="m" metricValue="6.8" pageId="93" pageNumber="94" unit="mm" value="68.0">68 mm</quantity>
|
||
at a position approximately at body chamber mid-length (width/ height ratio 1.03). The complete length of the body chamber is ca.
|
||
<quantity box="[1002,1104,997,1023]" metricMagnitude="-1" metricUnit="m" metricValue="1.0" pageId="93" pageNumber="94" unit="mm" value="100.0">100 mm</quantity>
|
||
. The width of the bodychamber at the aperture is
|
||
<quantity box="[514,599,1032,1059]" metricMagnitude="-2" metricUnit="m" metricValue="7.0" pageId="93" pageNumber="94" unit="mm" value="70.0">70 mm</quantity>
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||
and its height
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||
<quantity box="[783,869,1032,1059]" metricMagnitude="-2" metricUnit="m" metricValue="6.3" pageId="93" pageNumber="94" unit="mm" value="63.0">63 mm</quantity>
|
||
(width/height ratio 1.11), at the base of the body chamber the width is
|
||
<quantity box="[505,587,1067,1094]" metricMagnitude="-2" metricUnit="m" metricValue="5.8" pageId="93" pageNumber="94" unit="mm" value="58.0">58 mm</quantity>
|
||
and the height
|
||
<quantity box="[765,847,1067,1094]" metricMagnitude="-2" metricUnit="m" metricValue="6.0" pageId="93" pageNumber="94" unit="mm" value="60.0">60 mm</quantity>
|
||
(width/height ratio 0.97). The body chamber is moderately curved, with a narrower curvature in adapertural sections.
|
||
</paragraph>
|
||
<paragraph blockId="93.[189,1398,1168,1299]" pageId="93" pageNumber="94">
|
||
The cross section of the aperture is slightly depressed with a more rounded margin on the convex side of conch curvature. The shell is thickened at the aperture with a thickness of ca.
|
||
<quantity box="[1121,1213,1203,1230]" metricMagnitude="-3" metricUnit="m" metricValue="2.5" pageId="93" pageNumber="94" unit="mm" value="2.5">2.5 mm</quantity>
|
||
, compared with a thickness of
|
||
<quantity box="[366,458,1238,1265]" metricMagnitude="-3" metricUnit="m" metricValue="1.3" pageId="93" pageNumber="94" unit="mm" value="1.3">1.3 mm</quantity>
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||
at body chamber mid-length. The surface of the shell is poorly preserved but apparently smooth.
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||
</paragraph>
|
||
<paragraph blockId="93.[189,1399,1339,1471]" pageId="93" pageNumber="94">
|
||
The phragmocone has a length of
|
||
<quantity box="[592,676,1339,1365]" metricMagnitude="-2" metricUnit="m" metricValue="4.0" pageId="93" pageNumber="94" unit="mm" value="40.0">40 mm</quantity>
|
||
and expands with an angle of 19°. The four adoral chambers are shallow with a depth 0.15 that of the corresponding conch height; their septa are simple and cap shaped, with a shallow convexity, whilst the sutures are directly transverse, but slightly oblique and projecting toward the aperture on the concave side of the shell.
|
||
</paragraph>
|
||
<paragraph blockId="93.[189,1399,1510,1642]" pageId="93" pageNumber="94">
|
||
The septum of truncation is deeply convex, its depth is such that it is almost equal to the depth of the next two chambers. The siphuncular perforation is narrow, with a diameter of ca.
|
||
<quantity box="[1179,1250,1545,1572]" metricMagnitude="-3" metricUnit="m" metricValue="3.0" pageId="93" pageNumber="94" unit="mm" value="3.0">3 mm</quantity>
|
||
(ca. 0.07 of corresponding conch height) and positioned eccentrically at a distance of
|
||
<quantity box="[1059,1128,1580,1607]" metricMagnitude="-3" metricUnit="m" metricValue="8.0" pageId="93" pageNumber="94" unit="mm" value="8.0">8 mm</quantity>
|
||
from conch margin on convex side of conch curvature (SPR 0.18).
|
||
</paragraph>
|
||
<paragraph blockId="93.[189,1399,1681,1813]" pageId="93" pageNumber="94">
|
||
<accessionNumber box="[189,334,1681,1707]" httpUri="http://www.ncbi.nlm.nih.gov/protein/PMU26942" pageId="93" pageNumber="94">PMU 26942</accessionNumber>
|
||
is the largest fragment assigned to this species. It is a fragment of a body chamber with a maximum width of
|
||
<quantity box="[419,501,1716,1743]" metricMagnitude="-2" metricUnit="m" metricValue="7.8" pageId="93" pageNumber="94" unit="mm" value="78.0">78 mm</quantity>
|
||
and a maximum height of
|
||
<quantity box="[813,895,1716,1743]" metricMagnitude="-2" metricUnit="m" metricValue="7.0" pageId="93" pageNumber="94" unit="mm" value="70.0">70 mm</quantity>
|
||
(width/height ratio 1.11). The length of the body chamber is
|
||
<quantity box="[391,491,1751,1778]" metricMagnitude="-1" metricUnit="m" metricValue="1.0" pageId="93" pageNumber="94" unit="mm" value="100.0">100 mm</quantity>
|
||
. The shell surface is ornamented with faint, irregularly spaced rounded striae or growth lines which form a broad, shallow hyponomic sinus on the convex side of the shell curvature.
|
||
</paragraph>
|
||
<paragraph blockId="93.[189,1399,1852,1949]" pageId="93" pageNumber="94">
|
||
In well preserved fragments of earlier growth stages with conch heights of less than
|
||
<quantity box="[1198,1286,1852,1879]" metricMagnitude="-2" metricUnit="m" metricValue="5.0" pageId="93" pageNumber="94" unit="mm" value="50.0">50 mm</quantity>
|
||
, the shell surface is ornamented with irregularly, ca.
|
||
<quantity box="[698,818,1887,1914]" metricMagnitude="-4" metricUnit="m" metricValue="7.5" metricValueMax="10.0" metricValueMin="5.0" pageId="93" pageNumber="94" unit="mm" value="0.75" valueMax="1.0" valueMin="0.5">0.5–1 mm</quantity>
|
||
distant longitudinal striae and irregularly spaced growth lines that form a wide u-shaped hyponomic sinus on the convex margin of the shell (
|
||
<figureCitation box="[1271,1379,1922,1949]" captionStart="Fig" captionStartId="92.[189,232,1785,1811]" captionTargetBox="[189,1400,302,1729]" captionTargetId="figure@92.[189,1400,302,1739]" captionTargetPageId="92" captionText="Fig. 43. Redpathoceras Flower, 1963, Kallholn, Boda Limestone. A-C. Redpathoceras magnum sp. nov. A. PMU 26935, holotype; mature truncated body chamber, lateral view. B. Same specimen, view from antispihuncular side. C. PMU 26946, premature truncated phragmocone, lateral view. D-F. Redpathoceras depressum sp. nov. D. PMU 26927, holotype; mature truncated body chamber, lateral view. E. Same specimen, view from antispihuncular side. F. PMU 26931, premature truncated phragmocone, lateral view. Scale bar = 50 mm for all figures." figureDoi="http://doi.org/10.5281/zenodo.3814313" httpUri="https://zenodo.org/record/3814313/files/figure.png" pageId="93" pageNumber="94">Fig. 43C</figureCitation>
|
||
).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="94" pageNumber="95" type="discussion">
|
||
<paragraph blockId="94.[189,303,267,293]" box="[189,303,267,293]" pageId="94" pageNumber="95">
|
||
<heading bold="true" box="[189,303,267,293]" fontSize="11" level="3" pageId="94" pageNumber="95" reason="3">
|
||
<emphasis bold="true" box="[189,303,267,293]" pageId="94" pageNumber="95">Remarks</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph blockId="94.[189,1399,313,657]" pageId="94" pageNumber="95">
|
||
Five specimens (
|
||
<accessionNumber box="[393,545,313,340]" httpUri="http://www.ncbi.nlm.nih.gov/protein/PMU26945" pageId="94" pageNumber="95">PMU 26945</accessionNumber>
|
||
–26947; NRM Mo 8795, 152300) are interpreted as truncated parts of the phragmocone (see, e.g.,
|
||
<figureCitation box="[526,635,348,375]" captionStart="Fig" captionStartId="92.[189,232,1785,1811]" captionTargetBox="[189,1400,302,1729]" captionTargetId="figure@92.[189,1400,302,1739]" captionTargetPageId="92" captionText="Fig. 43. Redpathoceras Flower, 1963, Kallholn, Boda Limestone. A-C. Redpathoceras magnum sp. nov. A. PMU 26935, holotype; mature truncated body chamber, lateral view. B. Same specimen, view from antispihuncular side. C. PMU 26946, premature truncated phragmocone, lateral view. D-F. Redpathoceras depressum sp. nov. D. PMU 26927, holotype; mature truncated body chamber, lateral view. E. Same specimen, view from antispihuncular side. F. PMU 26931, premature truncated phragmocone, lateral view. Scale bar = 50 mm for all figures." figureDoi="http://doi.org/10.5281/zenodo.3814313" httpUri="https://zenodo.org/record/3814313/files/figure.png" pageId="94" pageNumber="95">Fig. 43C</figureCitation>
|
||
). All five specimens possess at their apical end a deeply curved septum of truncation. Specimens NRM Mo 8795 and 152300 possess seven and eight chambers, respectively. The conch height at the septum of truncation varies between 36 and
|
||
<quantity box="[1136,1217,419,446]" metricMagnitude="-2" metricUnit="m" metricValue="4.5" pageId="94" pageNumber="95" unit="mm" value="45.0">45 mm</quantity>
|
||
and the adoralmost diameters are
|
||
<quantity box="[416,501,454,481]" metricMagnitude="-2" metricUnit="m" metricValue="5.5" pageId="94" pageNumber="95" unit="mm" value="55.0">55 mm</quantity>
|
||
, resulting in angles of expansion of 14–15°(
|
||
<figureCitation box="[1013,1101,454,481]" captionStart="Fig" captionStartId="90.[189,232,1949,1975]" captionTargetBox="[355,1227,1107,1900]" captionTargetId="graphics@90.[468,1226,1107,1771]" captionTargetPageId="90" captionText="Fig. 42. Variation in angle of expansion in Redpathoceras Flower, 1963, Boda Limestone. R. magnum sp. nov. (grey dots); R. bullatum sp. nov. (black dots); R. depressum sp. nov. (black circles)." figureDoi="http://doi.org/10.5281/zenodo.3814311" httpUri="https://zenodo.org/record/3814311/files/figure.png" pageId="94" pageNumber="95">Fig. 42</figureCitation>
|
||
). The conch cross section in these specimens is slightly compressed to circular and they are more curved longitudinally than the mature fragments. The suture is nearly directly transverse, but forms a shallow, wide lobe on the convex side of the conch curvature. The assignment of these fragments to
|
||
<emphasis box="[990,1008,561,586]" italics="true" pageId="94" pageNumber="95">R</emphasis>
|
||
.
|
||
<emphasis box="[1024,1125,561,586]" italics="true" pageId="94" pageNumber="95">magnum</emphasis>
|
||
sp. nov. is justified by their similar conch cross section and by the sizes of their adoral-most septa, which agree well with the size of the septum of truncation of the mature stage of the
|
||
<typeStatus box="[873,980,630,656]" pageId="94" pageNumber="95">holotype</typeStatus>
|
||
.
|
||
</paragraph>
|
||
<paragraph blockId="94.[189,1399,696,898]" pageId="94" pageNumber="95">Based on the fragments of different growth stages a conch can be reconstructed, that, if it had not been truncated at several stages, would possess an angle of expansion of ca. 15° in juvenile growth stages, a rate of expansion of more than 20° at the adoral end of the phragmocone and a decreasing height during its final growth stages. The inflation of the body chamber is a result of a nearly straight outline of the shell margin at the antisiphuncular side of the conch during the initial stages of growth of the mature body chamber.</paragraph>
|
||
<paragraph blockId="94.[189,344,937,963]" box="[189,344,937,963]" pageId="94" pageNumber="95">
|
||
<heading bold="true" box="[189,344,937,963]" fontSize="11" level="3" pageId="94" pageNumber="95" reason="3">
|
||
<emphasis bold="true" box="[189,344,937,963]" pageId="94" pageNumber="95">Comparison</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph blockId="94.[189,1399,984,1186]" pageId="94" pageNumber="95">
|
||
This is a large species of
|
||
<taxonomicName authorityName="Flower" authorityYear="1963" box="[486,662,984,1010]" class="Cephalopoda" family="Probillingsitidae" genus="Redpathoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ascocerida" pageId="94" pageNumber="95" phylum="Mollusca" rank="genus">
|
||
<emphasis box="[486,662,984,1010]" italics="true" pageId="94" pageNumber="95">Redpathoceras</emphasis>
|
||
</taxonomicName>
|
||
, its mature conch width being more than twice that of the
|
||
<typeStatus box="[1348,1399,984,1010]" pageId="94" pageNumber="95">type</typeStatus>
|
||
species. It differs from the
|
||
<typeStatus box="[512,563,1019,1045]" pageId="94" pageNumber="95">type</typeStatus>
|
||
species in having a conch cross section which changes during growth from compressed to depressed.
|
||
<taxonomicName authority="Kröger, 2013" authorityName="Kröger" authorityYear="2013" box="[571,711,1054,1081]" class="Cephalopoda" family="Probillingsitidae" genus="Redpathoceras" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ascocerida" pageId="94" pageNumber="95" phylum="Mollusca" rank="species" species="bullatum" status="sp. nov.">
|
||
<emphasis box="[571,589,1055,1080]" italics="true" pageId="94" pageNumber="95">R</emphasis>
|
||
.
|
||
<emphasis box="[607,711,1054,1080]" italics="true" pageId="94" pageNumber="95">bullatum</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel box="[721,815,1055,1081]" pageId="94" pageNumber="95" rank="species">sp. nov.</taxonomicNameLabel>
|
||
differs in having a smaller adult size and a less inflated mature body chamber, with a concave outline of the conch margin on the concave side of the conch curvature. In
|
||
<emphasis box="[426,561,1125,1150]" italics="true" pageId="94" pageNumber="95">R. magnum</emphasis>
|
||
sp. nov. the outline of the mature body chamber at the antisiphuncular side is nearly straight in the apical two-thirds.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="94" pageNumber="95" type="multiple">
|
||
<paragraph blockId="94.[189,637,1225,1251]" box="[189,637,1225,1251]" pageId="94" pageNumber="95">
|
||
<heading bold="true" box="[189,637,1225,1251]" fontSize="11" level="3" pageId="94" pageNumber="95" reason="3">
|
||
<emphasis bold="true" box="[189,637,1225,1251]" pageId="94" pageNumber="95">Stratigraphic and geographic range</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph blockId="94.[189,747,1271,1297]" box="[189,747,1271,1297]" pageId="94" pageNumber="95">
|
||
Boda Limestone, late Katian,
|
||
<collectingRegion box="[539,635,1271,1297]" country="Sweden" name="Dalarna" pageId="94" pageNumber="95">Dalarna</collectingRegion>
|
||
,
|
||
<collectingCountry box="[647,744,1271,1297]" name="Sweden" pageId="94" pageNumber="95">Sweden</collectingCountry>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |