250 lines
33 KiB
XML
250 lines
33 KiB
XML
<document id="EFEA68558D95BD61EC1F3F7455F5A72D" ID-DOI="10.11646/zootaxa.3990.3.4" ID-GBIF-Dataset="471bf6e4-a502-401c-bee1-3535ac5305e4" ID-ISSN="1175-5326" ID-Zenodo-Dep="243049" ID-ZooBank="08B0220E-DC57-439C-A5B7-706B2202B1A1" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1461269214861" checkinUser="plazi" docAuthor="Roux, Michel" docDate="2015" docId="03FFAD25FFC2FFE35483F958A883FE08" docLanguage="en" docName="zt03990p409.pdf" docOrigin="Zootaxa 3990 (3)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Thalassocrinus clausus Mironov & Sorokina 1998" docType="treatment" docVersion="8" lastPageNumber="407" masterDocId="FFC6D55DFFDAFFF95414FFD5AB2CFFA5" masterDocTitle="Crinoids of the stalked family Hyocrinidae (Echinodermata) collected by the USNS Eltanin in the Southern Ocean" masterLastPageNumber="409" masterPageNumber="381" pageNumber="405" updateTime="1698611283588" updateUser="plazi">
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<mods:titleInfo id="D12D7BCDA9FB3C48E7864150D19B0D1B">
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<mods:title id="99986956E091C8D9526995C4CCF03FE1">Crinoids of the stalked family Hyocrinidae (Echinodermata) collected by the USNS Eltanin in the Southern Ocean</mods:title>
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<mods:name id="D6BADDAB6FD55F454296E26194D2F4D0" type="personal">
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<mods:role id="995DD76BB84430560DC980F74A32F325">
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<mods:namePart id="1EBD2699F1AB1BE1CA6547D409A11635">Roux, Michel</mods:namePart>
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<mods:typeOfResource id="DE8953420448534E2CC2851C8D62BBBC">text</mods:typeOfResource>
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<mods:title id="C5B2B69F00CE583406DCA1CBDDF29416">Zootaxa</mods:title>
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<mods:part id="831DAB1B535A37D609B3C073642BB527">
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<mods:date id="8842B6D14081A00F88CA21AC06721D95">2015</mods:date>
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<mods:number id="70F16393E6F794A448AC75CC9B8F7FD1">3990</mods:number>
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<mods:detail id="A7E81F0B1FEF756FC2ACBC196A1FDB1F" type="issue">
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<mods:number id="79CA43A6CE0B9AF8105F20A61FA90F68">3</mods:number>
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<mods:classification id="2E7FECF940EC5BCA9E054D4059EC1220">journal article</mods:classification>
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<mods:identifier id="E59169D038386044C6BD38C84EC87DC7" type="DOI">10.11646/zootaxa.3990.3.4</mods:identifier>
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<mods:identifier id="D950B69B9E2F859D63FB90ADF2406874" type="GBIF-Dataset">471bf6e4-a502-401c-bee1-3535ac5305e4</mods:identifier>
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<treatment id="03FFAD25FFC2FFE35483F958A883FE08" ID-DOI="http://doi.org/10.5281/zenodo.6095285" ID-GBIF-Taxon="119638578" ID-Zenodo-Dep="6095285" LSID="urn:lsid:plazi:treatment:03FFAD25FFC2FFE35483F958A883FE08" httpUri="http://treatment.plazi.org/id/03FFAD25FFC2FFE35483F958A883FE08" lastPageId="26" lastPageNumber="407" pageId="24" pageNumber="405">
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<subSubSection id="C34C4FB8FFC2FFE15483F958A862F889" pageId="24" pageNumber="405" type="nomenclature">
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<paragraph id="8BE91C33FFC2FFE15483F958A825F902" blockId="24.[151,777,1677,1736]" box="[151,777,1677,1703]" pageId="24" pageNumber="405">
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<heading id="D0A1AB5FFFC2FFE15483F958A825F902" bold="true" box="[151,777,1677,1703]" fontSize="11" level="1" pageId="24" pageNumber="405" reason="1">
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<taxonomicName id="4C5667B0FFC2FFE15483F958A825F902" ID-CoL="8GKH6" authority="Mironov & Sorokina, 1998" authorityName="Mironov & Sorokina" authorityYear="1998" box="[151,777,1677,1703]" class="Crinoidea" family="Hyocrinidae" genus="Thalassocrinus" higherTaxonomySource="CoL" kingdom="Animalia" order="Hyocrinida" pageId="24" pageNumber="405" phylum="Echinodermata" rank="species" species="clausus">
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<emphasis id="B922C021FFC2FFE15483F958A825F902" bold="true" box="[151,777,1677,1703]" pageId="24" pageNumber="405">
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<emphasis id="B922C021FFC2FFE15483F958AA9FF902" bold="true" box="[151,435,1677,1703]" italics="true" pageId="24" pageNumber="405">Thalassocrinus clausus</emphasis>
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<bibRefCitation id="EFC761C2FFC2FFE155AEF958A825F902" author="Mironov" box="[442,777,1677,1703]" pageId="24" pageNumber="405" refString="Mironov, A. N. & Sorokina, O. A. (1998) Sea lilies of the order Hyocrinida (Echinodermata, Crinoidea). Zoologicheskie Issledovania, 2, 1 - 117. [in Russian]" type="journal article" year="1998">Mironov & Sorokina, 1998</bibRefCitation>
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</emphasis>
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</taxonomicName>
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</heading>
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</paragraph>
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<paragraph id="8BE91C33FFC2FFE15483F97AAA82F96D" blockId="24.[151,777,1677,1736]" box="[151,430,1711,1736]" pageId="24" pageNumber="405">
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<figureCitation id="136D00B6FFC2FFE15483F97AAA29F96D" box="[151,261,1711,1736]" captionStart="FIGURE 17" captionStartId="25.[151,250,1032,1054]" captionTargetBox="[151,1436,589,1010]" captionTargetId="figure@25.[151,1436,589,1011]" captionTargetPageId="25" captionText="FIGURE 17. Proxistele and proximal mesistele columnals in Thalassocrinus clausus specimen 1005456. A: columnal of mid proxistele, B – C: columnal of proximal mesistele; C: oblique view." httpUri="https://zenodo.org/record/243066/files/figure.png" pageId="24" pageNumber="405">Figure 17</figureCitation>
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,
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<tableCitation id="C6D42988FFC2FFE15505F97AAA86F96D" box="[273,426,1711,1736]" captionStart-0="TABLE 16" captionStart-1="TABLE 17" captionStartId-0="25.[151,239,1130,1153]" captionStartId-1="25.[151,239,1437,1460]" captionText-0="TABLE 16. Main quantitative characters in theca and proximal stalk in Thalassocrinus clausus specimen USNM 1005456. Wb: Br 1 width; Wr-b: radial lower width; Wr-t: radial upper width; Hc: aboral cup height; Hr-r: radial axial height; Hr-i: radial side height; Htg-a: tegmen height at anus; Htg-b: tegmen height at mouth; Dc: uppermost diameter of aboral cup; Drb: diameter at radial-basal sutures; Dp: proximalmost stalk diameter; Dm: minimum stalk diameter in mesistele. Values in mm." captionText-1="TABLE 17. Main morphological ratios in theca and proximal stalk in Thalassocrinus clausus specimen USNM 1005456. Abbreviations like in Table 16." pageId="24" pageNumber="405">Tables 16–17</tableCitation>
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.
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</paragraph>
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<paragraph id="8BE91C33FFC2FFE15483F92DA862F889" blockId="24.[151,1436,1784,1837]" pageId="24" pageNumber="405">
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Synonymy:
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<taxonomicName id="4C5667B0FFC2FFE15506F92DA868F8AB" authority="Mironov & Sorokina, 1998: 36" authorityName="Mironov & Sorokina" authorityPageNumber="36" authorityYear="1998" box="[274,836,1784,1806]" class="Crinoidea" family="Hyocrinidae" genus="Thalassocrinus" higherTaxonomySource="CoL" kingdom="Animalia" order="Hyocrinida" pageId="24" pageNumber="405" phylum="Echinodermata" rank="species" species="clausus">
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<emphasis id="B922C021FFC2FFE15506F92DA92CF8AB" box="[274,512,1784,1806]" italics="true" pageId="24" pageNumber="405">Thalassocrinus clausus</emphasis>
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<bibRefCitation id="EFC761C2FFC2FFE15613F92DA80CF8AB" author="Mironov" box="[519,800,1784,1806]" pageId="24" pageNumber="405" refString="Mironov, A. N. & Sorokina, O. A. (1998) Sea lilies of the order Hyocrinida (Echinodermata, Crinoidea). Zoologicheskie Issledovania, 2, 1 - 117. [in Russian]" type="journal article" year="1998">Mironov & Sorokina, 1998</bibRefCitation>
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: 36
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</taxonomicName>
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–39, fig. 11, pls. 5 (5–6), 6 (1–2), 10 (6); Roux 2002: 173– 174, 184; Roux
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<emphasis id="B922C021FFC2FFE1557EF8CDAAB1F889" box="[362,413,1814,1837]" italics="true" pageId="24" pageNumber="405">et al.</emphasis>
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2002: 822;
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<bibRefCitation id="EFC761C2FFC2FFE15602F8C2A9D3F889" author="Roux" box="[534,767,1814,1836]" pageId="24" pageNumber="405" refString="Roux, M. & Lambert, P. (2011) Two new species of stalked crinoids from the north-eastern Pacific in the genera Gephyrocrinus and Ptilocrinus (Echinodermata, Crinoidea, Hyocrinidae). Effects of ontogeny and variability on hyocrinid taxonomy. Zootaxa, 2825, 1 - 54." type="journal article" year="2011">Roux & Lambert 2011</bibRefCitation>
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: 48, 51.
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</paragraph>
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</subSubSection>
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<subSubSection id="C34C4FB8FFC2FFE15483F88CAE5DF833" pageId="24" pageNumber="405" type="materials_examined">
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<paragraph id="8BE91C33FFC2FFE15483F88CAE5DF833" blockId="24.[151,1437,1881,2014]" pageId="24" pageNumber="405">
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<emphasis id="B922C021FFC2FFE15483F88CAAACF8D7" bold="true" box="[151,384,1881,1906]" pageId="24" pageNumber="405">Material examined.</emphasis>
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<collectionCode id="ED4784F6FFC2FFE15592F88FAAFBF8D7" LSID="urn:lsid:biocol.org:col:34871" box="[390,471,1882,1906]" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34871" name="Smithsonian Institution, National Museum of Natural History" pageId="24" pageNumber="405">USNM</collectionCode>
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1005456 from South of Gambier Islands, SE Pacific basin, 42°01’ à
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<geoCoordinate id="EE627AF4FFC2FFE150CCF88CAE1CF8D7" box="[1240,1328,1881,1906]" direction="south" orientation="latitude" pageId="24" pageNumber="405" precision="925" value="-41.95">41°57’S</geoCoordinate>
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–130°02’ à
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<geoCoordinate id="EE627AF4FFC2FFE154BEF8ABAA3DF833" box="[170,273,1918,1942]" direction="west" orientation="longitude" pageId="24" pageNumber="405" precision="925" value="-13.016666">13°01’W</geoCoordinate>
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, depth
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<quantity id="4CAEB1D6FFC2FFE15576F8A8A923F830" box="[354,527,1917,1942]" metricMagnitude="3" metricUnit="m" metricValue="4.841" metricValueMax="4.851" metricValueMin="4.831" pageId="24" pageNumber="405" unit="m" value="4841.0" valueMax="4851.0" valueMin="4831.0">4,831–4,851 m</quantity>
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: one specimen with aboral cup and proximal arms, and three stalk fragments.
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</paragraph>
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</subSubSection>
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<subSubSection id="C34C4FB8FFC2FFE054D3F874AE51F8E4" lastPageId="25" lastPageNumber="406" pageId="24" pageNumber="405" type="description">
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<paragraph id="8BE91C33FFC2FFE054D3F874A9F4FF5D" blockId="24.[151,1437,1881,2014]" lastBlockId="25.[151,1437,151,536]" lastPageId="25" lastPageNumber="406" pageId="24" pageNumber="405">
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<emphasis id="B922C021FFC2FFE154D3F874AA75F81F" bold="true" box="[199,345,1953,1978]" pageId="24" pageNumber="405">Description.</emphasis>
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Theca very similar to
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<typeStatus id="54EDA291FFC2FFE1564AF874A9EFF81F" box="[606,707,1953,1978]" pageId="24" pageNumber="405" type="holotype">holotype</typeStatus>
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, except cup higher than wide, orals without terminal finger-like projection, and anal cone slightly higher than oral cone. Measurements are given in
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<tableCitation id="C6D42988FFC2FFE1502EF810AF89F87B" box="[1082,1189,1989,2014]" captionStart="TABLE 16" captionStartId="25.[151,239,1130,1153]" captionText="TABLE 16. Main quantitative characters in theca and proximal stalk in Thalassocrinus clausus specimen USNM 1005456. Wb: Br 1 width; Wr-b: radial lower width; Wr-t: radial upper width; Hc: aboral cup height; Hr-r: radial axial height; Hr-i: radial side height; Htg-a: tegmen height at anus; Htg-b: tegmen height at mouth; Dc: uppermost diameter of aboral cup; Drb: diameter at radial-basal sutures; Dp: proximalmost stalk diameter; Dm: minimum stalk diameter in mesistele. Values in mm." pageId="24" pageNumber="405">Tables 16</tableCitation>
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and
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<tableCitation id="C6D42988FFC2FFE150CEF813AFD5F87B" box="[1242,1273,1990,2014]" captionStart="TABLE 17" captionStartId="25.[151,239,1437,1460]" captionText="TABLE 17. Main morphological ratios in theca and proximal stalk in Thalassocrinus clausus specimen USNM 1005456. Abbreviations like in Table 16." pageId="24" pageNumber="405">17</tableCitation>
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. Proximal arm pattern 1+2 3 4+5 with first pinnule on Br5, one arm missing, three arms broken after Br5, the fifth separated (length
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<quantity id="4CAEB1D6FFC3FFE054FAFF69AA69FF71" box="[238,325,188,212]" metricMagnitude="-3" metricUnit="m" metricValue="9.2" pageId="25" pageNumber="406" unit="mm" value="9.2">9.2 mm</quantity>
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) with successive brachial pairs beyond Br6. A single row of H-shaped plates in proximal pinnules only, probably indicative of an immature specimen.
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</paragraph>
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<paragraph id="8BE91C33FFC3FFE054D3FED1AF12FDBD" blockId="25.[151,1437,151,536]" pageId="25" pageNumber="406">
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Length of preserved stalk
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<quantity id="4CAEB1D6FFC3FFE055EAFED1A946FEB9" box="[510,618,260,285]" metricMagnitude="-2" metricUnit="m" metricValue="2.26" pageId="25" pageNumber="406" unit="mm" value="22.6">22.6 mm</quantity>
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. Proxistele rough and hexalobate in cross section proximally, distally becoming smoother and hexagonal in cross section beyond columnal 25. Columnal diameter decreasing from
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<quantity id="4CAEB1D6FFC3FFE0516DFEFDABEFFEC1" metricMagnitude="-3" metricUnit="m" metricValue="1.3" pageId="25" pageNumber="406" unit="mm" value="1.3">1.3 mm</quantity>
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below basal ring to
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<quantity id="4CAEB1D6FFC3FFE055B2FE99A926FEC1" box="[422,522,332,357]" metricMagnitude="-3" metricUnit="m" metricValue="1.05" pageId="25" pageNumber="406" unit="mm" value="1.05">1.05 mm</quantity>
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at a distance of
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<quantity id="4CAEB1D6FFC3FFE056D4FE99A83AFEC1" box="[704,790,332,357]" metricMagnitude="-3" metricUnit="m" metricValue="5.4" pageId="25" pageNumber="406" unit="mm" value="5.4">5.4 mm</quantity>
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and up to
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<quantity id="4CAEB1D6FFC3FFE05798FE99A8DCFEC1" box="[908,1008,332,357]" metricMagnitude="-4" metricUnit="m" metricValue="9.5" pageId="25" pageNumber="406" unit="mm" value="0.95">0.95 mm</quantity>
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at
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<quantity id="4CAEB1D6FFC3FFE05005FE99AF5BFEC1" box="[1041,1143,332,357]" metricMagnitude="-2" metricUnit="m" metricValue="1.45" pageId="25" pageNumber="406" unit="mm" value="14.5">14.5 mm</quantity>
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, and then increasing up to 1.0 mm at distal end of preserved stalk. Columnal height <
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<quantity id="4CAEB1D6FFC3FFE05736FEA5A854FE22" box="[802,888,368,392]" metricMagnitude="-4" metricUnit="m" metricValue="3.0" pageId="25" pageNumber="406" unit="mm" value="0.3">0.3 mm</quantity>
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proximally, increasing to
|
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<quantity id="4CAEB1D6FFC3FFE0508EFEBAAFC3FE22" box="[1178,1263,367,392]" metricMagnitude="-4" metricUnit="m" metricValue="5.0" pageId="25" pageNumber="406" unit="mm" value="0.5">0.5 mm</quantity>
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at a distance of 6.0 mm from aboral cup, 1.0 mm at
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<quantity id="4CAEB1D6FFC3FFE0562BFE41A98BFE09" box="[575,679,404,429]" metricMagnitude="-2" metricUnit="m" metricValue="1.45" pageId="25" pageNumber="406" unit="mm" value="14.5">14.5 mm</quantity>
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, and
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<quantity id="4CAEB1D6FFC3FFE056F3FE41A861FE09" box="[743,845,404,429]" metricMagnitude="-3" metricUnit="m" metricValue="1.25" pageId="25" pageNumber="406" unit="mm" value="1.25">1.25 mm</quantity>
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distally. Maximum ratio height to diameter
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<quantity id="4CAEB1D6FFC3FFE05158FE41AEB1FE08" box="[1356,1437,404,429]" metricMagnitude="-2" metricUnit="m" metricValue="3.175" pageId="25" pageNumber="406" unit="in" value="1.25">1.25 in</quantity>
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distalmost columnal. Columnal symplexies of 6 crenular units of 1 crenula (
|
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<figureCitation id="136D00B6FFC3FFE05044FE62AFB1FE75" box="[1104,1181,439,464]" captionStart="FIGURE 17" captionStartId="25.[151,250,1032,1054]" captionTargetBox="[151,1436,589,1010]" captionTargetId="figure@25.[151,1436,589,1011]" captionTargetPageId="25" captionText="FIGURE 17. Proxistele and proximal mesistele columnals in Thalassocrinus clausus specimen 1005456. A: columnal of mid proxistele, B – C: columnal of proximal mesistele; C: oblique view." httpUri="https://zenodo.org/record/243066/files/figure.png" pageId="25" pageNumber="406">Fig.17</figureCitation>
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). Axial canal poorly differentiated in proximal mesistele (
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<figureCitation id="136D00B6FFC3FFE05658FE09A98DFE51" box="[588,673,476,501]" captionStart="FIGURE 17" captionStartId="25.[151,250,1032,1054]" captionTargetBox="[151,1436,589,1010]" captionTargetId="figure@25.[151,1436,589,1011]" captionTargetPageId="25" captionText="FIGURE 17. Proxistele and proximal mesistele columnals in Thalassocrinus clausus specimen 1005456. A: columnal of mid proxistele, B – C: columnal of proximal mesistele; C: oblique view." httpUri="https://zenodo.org/record/243066/files/figure.png" pageId="25" pageNumber="406">Fig. 17</figureCitation>
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A) and highly differentiated distally with annular facet of small crenulae and large meshed galleried stereom bordering a wide lumen (
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<figureCitation id="136D00B6FFC3FFE057BEFE2AA8D6FDBD" box="[938,1018,511,536]" captionStart="FIGURE 17" captionStartId="25.[151,250,1032,1054]" captionTargetBox="[151,1436,589,1010]" captionTargetId="figure@25.[151,1436,589,1011]" captionTargetPageId="25" captionText="FIGURE 17. Proxistele and proximal mesistele columnals in Thalassocrinus clausus specimen 1005456. A: columnal of mid proxistele, B – C: columnal of proximal mesistele; C: oblique view." httpUri="https://zenodo.org/record/243066/files/figure.png" pageId="25" pageNumber="406">Fig. 17</figureCitation>
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B–C).
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</paragraph>
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<caption id="DF294CBBFFC3FFE05483FBDDA814FB98" httpUri="https://zenodo.org/record/243066/files/figure.png" pageId="25" pageNumber="406" targetBox="[151,1436,589,1010]" targetPageId="25">
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<paragraph id="8BE91C33FFC3FFE05483FBDDA814FB98" blockId="25.[151,1435,1032,1085]" pageId="25" pageNumber="406">
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<emphasis id="B922C021FFC3FFE05483FBDDAA0CFBB8" bold="true" box="[151,288,1032,1054]" pageId="25" pageNumber="406">FIGURE 17.</emphasis>
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Proxistele and proximal mesistele columnals in
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<taxonomicName id="4C5667B0FFC3FFE05705FBDDA8D3FBBB" box="[785,1023,1032,1054]" class="Crinoidea" family="Hyocrinidae" genus="Thalassocrinus" higherTaxonomySource="CoL" kingdom="Animalia" order="Hyocrinida" pageId="25" pageNumber="406" phylum="Echinodermata" rank="species" species="clausus">
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<emphasis id="B922C021FFC3FFE05705FBDDA8D3FBBB" box="[785,1023,1032,1054]" italics="true" pageId="25" pageNumber="406">Thalassocrinus clausus</emphasis>
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</taxonomicName>
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specimen 1005456. A: columnal of mid proxistele, B–C: columnal of proximal mesistele; C: oblique view.
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</paragraph>
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</caption>
|
||
<caption id="DF294CBBFFC3FFE05483FBBFAA8DFAA7" pageId="25" pageNumber="406">
|
||
<paragraph id="8BE91C33FFC3FFE05483FBBFAA8DFAA7" blockId="25.[151,1436,1130,1282]" pageId="25" pageNumber="406">
|
||
<emphasis id="B922C021FFC3FFE05483FBBFAA30FB24" bold="true" box="[151,284,1130,1153]" pageId="25" pageNumber="406">TABLE 16.</emphasis>
|
||
Main quantitative characters in theca and proximal stalk in
|
||
<taxonomicName id="4C5667B0FFC3FFE057C7FBBFAFFEFB24" box="[979,1234,1130,1153]" class="Crinoidea" family="Hyocrinidae" genus="Thalassocrinus" higherTaxonomySource="CoL" kingdom="Animalia" order="Hyocrinida" pageId="25" pageNumber="406" phylum="Echinodermata" rank="species" species="clausus">
|
||
<emphasis id="B922C021FFC3FFE057C7FBBFAFFEFB24" box="[979,1234,1130,1153]" italics="true" pageId="25" pageNumber="406">Thalassocrinus clausus</emphasis>
|
||
</taxonomicName>
|
||
specimen USNM 1005456. Wb: Br1 width; Wr-b: radial lower width; Wr-t: radial upper width; Hc: aboral cup height; Hr-r: radial axial height; Hr-i: radial side height; Htg-a: tegmen height at anus; Htg-b: tegmen height at mouth; Dc: uppermost diameter of aboral cup; Drb: diameter at radial-basal sutures; Dp: proximalmost stalk diameter; Dm: minimum stalk diameter in mesistele. Values in mm.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="8BE91C33FFC3FFE05489FAC8AE51F8E4" blockId="25.[157,1373,1309,1373]" lastBlockId="25.[151,1437,1652,2037]" pageId="25" pageNumber="406">
|
||
Wb Wrt Hc Hrr Hri Htga Htgo Dc Drb Dp Dm 2.7 4.2 8.1 3.7 4.5 3.8 1.7 6.2 5.2 1.3 0.95 Hc/Dc Hri/Hc Hrr/Hc Htgo/Hc Hri/Wrt Wrt/ Wb Dc/Dp Dc/Drb Drb/Dp Dp/Dm 1.30 0.56 0.46 0.21 1.07 1.57 4.89 1.19 4.10 1.34
|
||
<emphasis id="B922C021FFC3FFE054D3F9A1AA17F928" bold="true" box="[199,315,1652,1677]" pageId="25" pageNumber="406">Remarks.</emphasis>
|
||
The Eltanin specimen is substantially smaller than the
|
||
<typeStatus id="54EDA291FFC3FFE057B9F9A1AF23F928" box="[941,1039,1652,1677]" pageId="25" pageNumber="406" type="holotype">holotype</typeStatus>
|
||
(Dp
|
||
<quantity id="4CAEB1D6FFC3FFE0505EF9A0AF8EF928" box="[1098,1186,1653,1677]" metricMagnitude="-3" metricUnit="m" metricValue="2.4" pageId="25" pageNumber="406" unit="mm" value="2.4">2.4 mm</quantity>
|
||
) and likely immature. Its mesistele symplexies differ in having short crenulae and large axial canal and claustrum (
|
||
<figureCitation id="136D00B6FFC3FFE0511CF94DAE72F914" box="[1288,1374,1688,1713]" captionStart="FIGURE 17" captionStartId="25.[151,250,1032,1054]" captionTargetBox="[151,1436,589,1010]" captionTargetId="figure@25.[151,1436,589,1011]" captionTargetPageId="25" captionText="FIGURE 17. Proxistele and proximal mesistele columnals in Thalassocrinus clausus specimen 1005456. A: columnal of mid proxistele, B – C: columnal of proximal mesistele; C: oblique view." httpUri="https://zenodo.org/record/243066/files/figure.png" pageId="25" pageNumber="406">Fig. 17</figureCitation>
|
||
B–C) corresponding to juvenile characters. New columnals appearing below basal ring (i.e., later during ontogeny) display symplexial pattern (
|
||
<figureCitation id="136D00B6FFC3FFE055CAF935A91FF95C" box="[478,563,1760,1785]" captionStart="FIGURE 17" captionStartId="25.[151,250,1032,1054]" captionTargetBox="[151,1436,589,1010]" captionTargetId="figure@25.[151,1436,589,1011]" captionTargetPageId="25" captionText="FIGURE 17. Proxistele and proximal mesistele columnals in Thalassocrinus clausus specimen 1005456. A: columnal of mid proxistele, B – C: columnal of proximal mesistele; C: oblique view." httpUri="https://zenodo.org/record/243066/files/figure.png" pageId="25" pageNumber="406">Fig. 17</figureCitation>
|
||
A) similar to those of proxistele and mesistele columnals in the
|
||
<typeStatus id="54EDA291FFC3FFE0512EF935AEB0F95C" box="[1338,1436,1760,1785]" pageId="25" pageNumber="406" type="holotype">holotype</typeStatus>
|
||
(
|
||
<bibRefCitation id="EFC761C2FFC3FFE0548AF8D1A9A5F8B8" author="Mironov" box="[158,649,1796,1821]" pageId="25" pageNumber="406" refString="Mironov, A. N. & Sorokina, O. A. (1998) Sea lilies of the order Hyocrinida (Echinodermata, Crinoidea). Zoologicheskie Issledovania, 2, 1 - 117. [in Russian]" type="journal article" year="1998">Mironov & Sorokina 1998, pl. 5-5 and 6-1</bibRefCitation>
|
||
). The species is now known from two specimens only. The
|
||
<typeStatus id="54EDA291FFC3FFE0512EF8D1AEB0F8B8" box="[1338,1436,1796,1821]" pageId="25" pageNumber="406" type="holotype">holotype</typeStatus>
|
||
was found in NW Pacific at a shallower depth (
|
||
<geoCoordinate id="EE627AF4FFC3FFE056BDF8FCA804F8E4" box="[681,808,1832,1857]" direction="north" orientation="latitude" pageId="25" pageNumber="406" precision="92" value="22.333334">22°20.0’ N</geoCoordinate>
|
||
–
|
||
<geoCoordinate id="EE627AF4FFC3FFE0572DF8FDA890F8E5" box="[825,956,1832,1857]" direction="east" orientation="longitude" pageId="25" pageNumber="406" precision="92" value="161.52667">161°31.6’ E</geoCoordinate>
|
||
at a depth between 1,292 and
|
||
<quantity id="4CAEB1D6FFC3FFE05105F8FCAE5DF8E4" box="[1297,1393,1833,1857]" metricMagnitude="3" metricUnit="m" metricValue="1.334" pageId="25" pageNumber="406" unit="m" value="1334.0">1,334 m</quantity>
|
||
).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<caption id="DF294CBBFFC3FFE05483FA48A960FA71" pageId="25" pageNumber="406">
|
||
<paragraph id="8BE91C33FFC3FFE05483FA48A960FA71" blockId="25.[151,1436,1437,1492]" pageId="25" pageNumber="406">
|
||
<emphasis id="B922C021FFC3FFE05483FA48AA32FA11" bold="true" box="[151,286,1437,1460]" pageId="25" pageNumber="406">TABLE 17.</emphasis>
|
||
Main morphological ratios in theca and proximal stalk in
|
||
<taxonomicName id="4C5667B0FFC3FFE057DBFA48AFE3FA11" box="[975,1231,1437,1460]" class="Crinoidea" family="Hyocrinidae" genus="Thalassocrinus" higherTaxonomySource="CoL" kingdom="Animalia" order="Hyocrinida" pageId="25" pageNumber="406" phylum="Echinodermata" rank="species" species="clausus">
|
||
<emphasis id="B922C021FFC3FFE057DBFA48AFE3FA11" box="[975,1231,1437,1460]" italics="true" pageId="25" pageNumber="406">Thalassocrinus clausus</emphasis>
|
||
</taxonomicName>
|
||
specimen USNM 1005456. Abbreviations like in Table 16.
|
||
</paragraph>
|
||
</caption>
|
||
<subSubSection id="C34C4FB8FFC3FFE35483F898A883FE08" lastPageId="26" lastPageNumber="407" pageId="25" pageNumber="406" type="reference_group">
|
||
<paragraph id="8BE91C33FFC3FFE35483F898A903FEE5" blockId="25.[151,1437,1652,2037]" lastBlockId="26.[151,1437,151,429]" lastPageId="26" lastPageNumber="407" pageId="25" pageNumber="406">
|
||
<taxonomicName id="4C5667B0FFC3FFE05483F898AA2AF8C0" box="[151,262,1868,1893]" class="Crinoidea" family="Hyocrinidae" genus="Thalassocrinus" higherTaxonomySource="CoL" kingdom="Animalia" order="Hyocrinida" pageId="25" pageNumber="406" phylum="Echinodermata" rank="species" species="alvinae">
|
||
<emphasis id="B922C021FFC3FFE05483F898AA2AF8C0" box="[151,262,1868,1893]" italics="true" pageId="25" pageNumber="406">T. alvinae</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="4C5667B0FFC3FFE0552AF898AA80F8C0" box="[318,428,1868,1893]" class="Crinoidea" family="Hyocrinidae" genus="Thalassocrinus" higherTaxonomySource="CoL" kingdom="Animalia" order="Hyocrinida" pageId="25" pageNumber="406" phylum="Echinodermata" rank="species" species="clausus">
|
||
<emphasis id="B922C021FFC3FFE0552AF898AA80F8C0" box="[318,428,1868,1893]" italics="true" pageId="25" pageNumber="406">T. clausus</emphasis>
|
||
</taxonomicName>
|
||
share both the same anal cone feature (
|
||
<bibRefCitation id="EFC761C2FFC3FFE0577AF898AF5EF8C0" author="Roux" box="[878,1138,1868,1893]" pageId="25" pageNumber="406" refString="Roux, M. & Lambert, P. (2011) Two new species of stalked crinoids from the north-eastern Pacific in the genera Gephyrocrinus and Ptilocrinus (Echinodermata, Crinoidea, Hyocrinidae). Effects of ontogeny and variability on hyocrinid taxonomy. Zootaxa, 2825, 1 - 54." type="journal article" year="2011">Roux & Lambert 2011</bibRefCitation>
|
||
) and a large axial canal in the mesistele of juvenile specimens (see Roux 2002, fig. 2A–E). They mainly differ in proximal arm morphology.
|
||
<taxonomicName id="4C5667B0FFC3FFE05483F840AA2FF808" box="[151,259,1940,1965]" class="Crinoidea" family="Hyocrinidae" genus="Thalassocrinus" higherTaxonomySource="CoL" kingdom="Animalia" order="Hyocrinida" pageId="25" pageNumber="406" phylum="Echinodermata" rank="species" species="alvinae">
|
||
<emphasis id="B922C021FFC3FFE05483F840AA2FF808" box="[151,259,1940,1965]" italics="true" pageId="25" pageNumber="406">T. alvinae</emphasis>
|
||
</taxonomicName>
|
||
displays a greater Wr/Wb ratio than
|
||
<taxonomicName id="4C5667B0FFC3FFE056B2F840A83AF808" box="[678,790,1940,1965]" class="Crinoidea" family="Hyocrinidae" genus="Thalassocrinus" higherTaxonomySource="CoL" kingdom="Animalia" order="Hyocrinida" pageId="25" pageNumber="406" phylum="Echinodermata" rank="species" species="clausus">
|
||
<emphasis id="B922C021FFC3FFE056B2F840A83AF808" box="[678,790,1940,1965]" italics="true" pageId="25" pageNumber="406">T. clausus</emphasis>
|
||
</taxonomicName>
|
||
.
|
||
<bibRefCitation id="EFC761C2FFC3FFE05730F841AF4EF808" author="Mironov" box="[804,1122,1940,1965]" pageId="25" pageNumber="406" refString="Mironov, A. N. & Sorokina, O. A. (1998) Sea lilies of the order Hyocrinida (Echinodermata, Crinoidea). Zoologicheskie Issledovania, 2, 1 - 117. [in Russian]" type="journal article" year="1998">Mironov & Sorokina (1998)</bibRefCitation>
|
||
attributed to a new species, i. e.,
|
||
<taxonomicName id="4C5667B0FFC3FFE054C4F86CAAA9F874" box="[208,389,1976,2001]" class="Crinoidea" family="Hyocrinidae" genus="Thalassocrinus" higherTaxonomySource="CoL" kingdom="Animalia" order="Hyocrinida" pageId="25" pageNumber="406" phylum="Echinodermata" rank="species" species="depauperatus">
|
||
<emphasis id="B922C021FFC3FFE054C4F86CAAA9F874" box="[208,389,1976,2001]" italics="true" pageId="25" pageNumber="406">T. depauperatus</emphasis>
|
||
</taxonomicName>
|
||
, a poorly preserved specimen with broad proximal arms, anal cone substantially higher than oral cone and orals without finger-like terminal projection. It differs from Eltanin specimen in having larger size (Dp
|
||
<quantity id="4CAEB1D6FFC0FFE354DEFF42AA1FFF15" box="[202,307,151,176]" metricMagnitude="-3" metricUnit="m" metricValue="1.65" pageId="26" pageNumber="407" unit="mm" value="1.65">1.65 mm</quantity>
|
||
), three interbasal sutures, aboral cup more elongated (Hc/Dc 1.38), stalk symplexies with 7 crenular units and proximal brachials without lateral wings. Such differences could be accounted for by intraspecific variation, and/or correspond to ontogenetic changes. Moreover,
|
||
<taxonomicName id="4C5667B0FFC0FFE35773FF34AF37FF5D" box="[871,1051,223,248]" class="Crinoidea" family="Hyocrinidae" genus="Thalassocrinus" higherTaxonomySource="CoL" kingdom="Animalia" order="Hyocrinida" pageId="26" pageNumber="407" phylum="Echinodermata" rank="species" species="depauperatus">
|
||
<emphasis id="B922C021FFC0FFE35773FF34AF37FF5D" box="[871,1051,223,248]" italics="true" pageId="26" pageNumber="407">T. depauperatus</emphasis>
|
||
</taxonomicName>
|
||
was collected at a slightly greater depth (
|
||
<quantity id="4CAEB1D6FFC0FFE354F0FED1AA6DFEB8" box="[228,321,260,285]" metricMagnitude="3" metricUnit="m" metricValue="5.02" pageId="26" pageNumber="407" unit="m" value="5020.0">5,020 m</quantity>
|
||
–
|
||
<quantity id="4CAEB1D6FFC0FFE3555BFED1AA80FEB9" box="[335,428,260,285]" metricMagnitude="3" metricUnit="m" metricValue="5.13" pageId="26" pageNumber="407" unit="m" value="5130.0">5,130 m</quantity>
|
||
) off Sunda Strait (
|
||
<geoCoordinate id="EE627AF4FFC0FFE3566FFED1A9DEFEB8" box="[635,754,260,285]" direction="south" orientation="latitude" pageId="26" pageNumber="407" precision="92" value="-11.826667">11°49.6’ S</geoCoordinate>
|
||
–
|
||
<geoCoordinate id="EE627AF4FFC0FFE35716FED1A8A0FEB9" box="[770,908,260,285]" direction="east" orientation="longitude" pageId="26" pageNumber="407" precision="92" value="102.91">102°54.6’ E</geoCoordinate>
|
||
). Additional material is required to know if the two species are distinct or synonym.
|
||
</paragraph>
|
||
<paragraph id="8BE91C33FFC0FFE354D3FE99A883FE08" blockId="26.[151,1437,151,429]" pageId="26" pageNumber="407">
|
||
<emphasis id="B922C021FFC0FFE354D3FE99AA75FEC0" bold="true" box="[199,345,332,357]" pageId="26" pageNumber="407">Occurrence.</emphasis>
|
||
North western Pacific and South Central Pacific, depth
|
||
<quantity id="4CAEB1D6FFC0FFE357C5FE99AF01FEC1" box="[977,1069,332,356]" metricMagnitude="3" metricUnit="m" metricValue="1.334" pageId="26" pageNumber="407" unit="m" value="1334.0">1,334 m</quantity>
|
||
to
|
||
<quantity id="4CAEB1D6FFC0FFE35046FE99AF82FEC1" box="[1106,1198,332,356]" metricMagnitude="3" metricUnit="m" metricValue="4.831" pageId="26" pageNumber="407" unit="m" value="4831.0">4,831 m</quantity>
|
||
(possibly
|
||
<quantity id="4CAEB1D6FFC0FFE35137FE99AE53FEC1" box="[1315,1407,332,356]" metricMagnitude="3" metricUnit="m" metricValue="1.2919999999999998" pageId="26" pageNumber="407" unit="m" value="1292.0">1,292 m</quantity>
|
||
to
|
||
<quantity id="4CAEB1D6FFC0FFE35483FEBAABDBFE2D" box="[151,247,367,392]" metricMagnitude="3" metricUnit="m" metricValue="4.851" pageId="26" pageNumber="407" unit="m" value="4851.0">4,851 m</quantity>
|
||
). This depth range could be extending to
|
||
<quantity id="4CAEB1D6FFC0FFE356D8FEBAA804FE22" box="[716,808,367,392]" metricMagnitude="3" metricUnit="m" metricValue="5.02" pageId="26" pageNumber="407" unit="m" value="5020.0">5,020 m</quantity>
|
||
(possibly
|
||
<quantity id="4CAEB1D6FFC0FFE3578AFEBAA8D0FE2D" box="[926,1020,367,392]" metricMagnitude="3" metricUnit="m" metricValue="5.13" pageId="26" pageNumber="407" unit="m" value="5130.0">5,130 m</quantity>
|
||
) and the geographical distribution to NW Indian Ocean if
|
||
<taxonomicName id="4C5667B0FFC0FFE35596FE40AAC3FE08" box="[386,495,404,429]" class="Crinoidea" family="Hyocrinidae" genus="Thalassocrinus" higherTaxonomySource="CoL" kingdom="Animalia" order="Hyocrinida" pageId="26" pageNumber="407" phylum="Echinodermata" rank="species" species="clausus">
|
||
<emphasis id="B922C021FFC0FFE35596FE40AAC3FE08" box="[386,495,404,429]" italics="true" pageId="26" pageNumber="407">T. clausus</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="4C5667B0FFC0FFE35633FE40A9F0FE08" box="[551,732,404,429]" class="Crinoidea" family="Hyocrinidae" genus="Thalassocrinus" higherTaxonomySource="CoL" kingdom="Animalia" order="Hyocrinida" pageId="26" pageNumber="407" phylum="Echinodermata" rank="species" species="depauperatus">
|
||
<emphasis id="B922C021FFC0FFE35633FE40A9F0FE08" box="[551,732,404,429]" italics="true" pageId="26" pageNumber="407">T. depauperatus</emphasis>
|
||
</taxonomicName>
|
||
become synonym.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |