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<mods:title id="7C5FE019C249303F495E315204D3A74E">Deep-sea Ophiuroidea (Echinodermata) from the Danish Galathea II Expedition 1950 - 52, with taxonomic revisions</mods:title>
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<treatment id="039A87CC627B4F2CFF11F8005E815364" ID-DOI="http://doi.org/10.5281/zenodo.4740541" ID-GBIF-Taxon="212429028" ID-Zenodo-Dep="4740541" LSID="urn:lsid:plazi:treatment:039A87CC627B4F2CFF11F8005E815364" httpUri="http://treatment.plazi.org/id/039A87CC627B4F2CFF11F8005E815364" lastPageId="11" lastPageNumber="516" pageId="9" pageNumber="514">
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<taxonomicName id="4C334D59627B4F2EFF11F8005D13509A" ID-CoL="6SPFZ" ID-ENA="1316101" authority="(Lyman, 1878)" baseAuthorityName="Lyman" baseAuthorityYear="1878" box="[151,575,2005,2032]" class="Ophiuroidea" family="Ophiuridae" genus="Ophiura" kingdom="Animalia" order="Ophiurida" pageId="9" pageNumber="514" phylum="Echinodermata" rank="species" species="ljungmani">
<emphasis id="B947EAC8627B4F2EFF11F8005D13509A" bold="true" box="[151,575,2005,2032]" pageId="9" pageNumber="514">
<emphasis id="B947EAC8627B4F2EFF11F8005EAF5085" bold="true" box="[151,387,2005,2032]" italics="true" pageId="9" pageNumber="514">Ophiura ljungmani</emphasis>
(
<bibRefCitation id="EFA24B2B627B4F2EFE12F8035D1B509A" author="Lyman" box="[404,567,2005,2032]" firstAuthor="Lyman" pageId="9" pageNumber="514" pagination="65 - 168" refId="ref16006" refString="Lyman, T. (1878) Ophiuridae and Astrophytidae of the &quot; Challenger &quot; expedition. Part I. Bulletin of the Museum of Comparative Zoology at Harvard, 5, 65 - 168." type="journal article" year="1878">Lyman, 1878</bibRefCitation>
)
</emphasis>
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</heading>
</paragraph>
</subSubSection>
<subSubSection id="C329655162784F2DFF11FF425DF05610" pageId="10" pageNumber="515" type="materials_examined">
<paragraph id="8B8C36DA62784F2DFF11FF425D8F578C" blockId="10.[151,1437,150,357]" pageId="10" pageNumber="515">
<materialsCitation id="3B5B3C8762784F2DFF11FF425D6B57A0" ID-GBIF-Occurrence="4173687352" collectingDate="1950-11-20" collectingDateMax="1950-12-02" collectingDateMin="1950-11-20" collectionCode="EAST" country="Ghana" elevation="1510" latitude="2.0" location="Takoradi" longLatPrecision="1307" longitude="9.233334" pageId="10" pageNumber="515" specimenCount="4">
<collectionCode id="ED22AE1F62784F2DFF11FF425FF057C4" box="[151,220,151,177]" pageId="10" pageNumber="515">EAST</collectionCode>
ATLANTIC OCEAN •
<specimenCount id="9D35FD5362784F2DFE61FF425D4457C4" box="[487,616,151,177]" pageId="10" pageNumber="515" type="generic">1 specimen</specimenCount>
; off
<collectingCountry id="F324764A62784F2DFD1FFF425DC957C4" box="[665,741,151,177]" name="Ghana" pageId="10" pageNumber="515">Ghana</collectingCountry>
,
<location id="8EEC600162784F2DFD69FF425C7A57C4" LSID="urn:lsid:plazi:treatment:039A87CC627B4F2CFF11F8005E815364:8EEC600162784F2DFD69FF425C7A57C4" box="[751,854,151,177]" country="Ghana" latitude="2.0" longLatPrecision="1307" longitude="9.233334" name="Takoradi" pageId="10" pageNumber="515">Takoradi</location>
;
<geoCoordinate id="EE07501D62784F2DFCE6FF425CEF57C4" box="[864,963,151,177]" degrees="04" direction="north" minutes="00" orientation="latitude" pageId="10" pageNumber="515" precision="925" value="4.0">04°00N</geoCoordinate>
,
<geoCoordinate id="EE07501D62784F2DFC4BFF425B6857C4" box="[973,1092,151,177]" degrees="001" direction="west" minutes="43" orientation="longitude" pageId="10" pageNumber="515" precision="925" value="-1.7166667">001°43W</geoCoordinate>
; 1445;
<date id="FF8D101A62784F2DFB13FF425A0257C4" box="[1173,1326,150,177]" pageId="10" pageNumber="515" value="1950-11-20">
<collectingDate id="EFC9E9F262784F2DFB13FF425A0257C4" box="[1173,1326,150,177]" pageId="10" pageNumber="515" value="1950-11-20">20 Nov. 1950</collectingDate>
</date>
; Galathea II stn. 33; grey clay; NHMD-868674 •
</materialsCitation>
<materialsCitation id="3B5B3C8762784F2DFDC8FF6E5DB3578C" ID-GBIF-Occurrence="4173687314" collectingDate="1950-11-20" collectingDateMax="1950-12-02" collectingDateMin="1950-11-20" collectionCode="EAST" country="Ghana" elevation="1510" latitude="2.0" location="Takoradi" longLatPrecision="1307" longitude="9.233334" pageId="10" pageNumber="515" specimenCount="4">
<specimenCount id="9D35FD5362784F2DFDC8FF6E5DF057A0" box="[590,732,187,213]" pageId="10" pageNumber="515" type="generic">3 specimens</specimenCount>
; off
<collectingCountry id="F324764A62784F2DFC89FF6E5C7157A0" box="[783,861,187,213]" name="Gabon" pageId="10" pageNumber="515">Gabon</collectingCountry>
;
<geoCoordinate id="EE07501D62784F2DFCEFFF6E5CE057A0" box="[873,972,187,213]" degrees="02" direction="north" minutes="00" orientation="latitude" pageId="10" pageNumber="515" precision="925" value="2.0">02°00N</geoCoordinate>
,
<geoCoordinate id="EE07501D62784F2DFC5EFF6E5B6B57A0" box="[984,1095,187,213]" degrees="009" direction="east" minutes="14" orientation="longitude" pageId="10" pageNumber="515" precision="925" value="9.233334">009°14E</geoCoordinate>
;
<quantity id="4CCB9B3F62784F2DFBD5FF6F5BDD57A0" box="[1107,1265,186,213]" metricMagnitude="3" metricUnit="m" metricValue="1.51" metricValueMax="1.52" metricValueMin="1.5" pageId="10" pageNumber="515" unit="m" value="1510.0" valueMax="1520.0" valueMin="1500.0">
<elevation id="001ED1E962784F2DFBD5FF6F5BDD57A0" box="[1107,1265,186,213]" metricMagnitude="3" metricUnit="m" metricValue="1.51" metricValueMax="1.52" metricValueMin="1.5" pageId="10" pageNumber="515" unit="m" value="1510.0" valueMax="1520.0" valueMin="1500.0">15001520 m</elevation>
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;
<date id="FF8D101A62784F2DFB7BFF6E5ABB57A0" box="[1277,1431,186,213]" pageId="10" pageNumber="515" value="1950-12-02">
<collectingDate id="EFC9E9F262784F2DFB7BFF6E5ABB57A0" box="[1277,1431,186,213]" pageId="10" pageNumber="515" value="1950-12-02">02 Dec. 1950</collectingDate>
</date>
; Galathea II stn. 63; blue clay; NHMD-305711
</materialsCitation>
.
</paragraph>
<paragraph id="8B8C36DA62784F2DFF41FED65DF05610" blockId="10.[151,1437,150,357]" pageId="10" pageNumber="515">
<materialsCitation id="3B5B3C8762784F2DFF41FED65C295634" ID-GBIF-Occurrence="4173687355" collectingDate="1996-08-25" collectionCode="NORTH" country="Iceland" elevation="2006" latitude="64.90567" location="Iceland" longLatPrecision="10" longitude="-29.973167" pageId="10" pageNumber="515" specimenCount="1">
<collectionCode id="ED22AE1F62784F2DFF41FED65E0A5668" box="[199,294,259,285]" pageId="10" pageNumber="515">NORTH</collectionCode>
ATLANTIC OCEAN •
<specimenCount id="9D35FD5362784F2DFDBDFED65D935668" box="[571,703,259,285]" pageId="10" pageNumber="515" type="generic">1 specimen</specimenCount>
; off
<collectingCountry id="F324764A62784F2DFD70FED65C605668" box="[758,844,259,285]" name="Iceland" pageId="10" pageNumber="515">Iceland</collectingCountry>
;
<geoCoordinate id="EE07501D62784F2DFCDFFED75CF35668" box="[857,991,258,285]" degrees="64" direction="north" minutes="54,34" orientation="latitude" pageId="10" pageNumber="515" precision="9" value="64.90567">64°54,34N</geoCoordinate>
,
<geoCoordinate id="EE07501D62784F2DFC6AFED75BAB5668" box="[1004,1159,258,285]" degrees="029" direction="west" minutes="58,39" orientation="longitude" pageId="10" pageNumber="515" precision="9" value="-29.973167">029°58,39W</geoCoordinate>
;
<quantity id="4CCB9B3F62784F2DFB12FED75A185668" box="[1172,1332,258,285]" metricMagnitude="3" metricUnit="m" metricValue="2.006" metricValueMax="2.007" metricValueMin="2.005" pageId="10" pageNumber="515" unit="m" value="2006.0" valueMax="2007.0" valueMin="2005.0">
<elevation id="001ED1E962784F2DFB12FED75A185668" box="[1172,1332,258,285]" metricMagnitude="3" metricUnit="m" metricValue="2.006" metricValueMax="2.007" metricValueMin="2.005" pageId="10" pageNumber="515" unit="m" value="2006.0" valueMax="2007.0" valueMin="2005.0">20052007 m</elevation>
</quantity>
;
<date id="FF8D101A62784F2DFAC4FED75FFE5634" pageId="10" pageNumber="515" value="1996-08-25">
<collectingDate id="EFC9E9F262784F2DFAC4FED75FFE5634" pageId="10" pageNumber="515" value="1996-08-25">25 Aug. 1996</collectingDate>
</date>
; BIOICE stn. 2914; SMNH-41981, SMNH-41982
</materialsCitation>
<materialsCitation id="3B5B3C8762784F2DFC9BFEF25DF45610" ID-GBIF-Occurrence="4173687327" latitude="51.49" longitude="-41.65" pageId="10" pageNumber="515">
<specimenCount id="9D35FD5362784F2DFC9BFEF25CB35634" box="[797,927,295,321]" pageId="10" pageNumber="515" type="generic">1 specimen</specimenCount>
; off
<collectingCountry id="F324764A62784F2DFC57FEF25B0B5634" box="[977,1063,295,321]" name="Iceland" pageId="10" pageNumber="515">Iceland</collectingCountry>
; 62
<geoCoordinate id="EE07501D62784F2DFBD3FEF35B9A5634" box="[1109,1206,294,321]" degrees="51,49" direction="north" orientation="latitude" pageId="10" pageNumber="515" precision="555" value="51.49">51,49°N</geoCoordinate>
,
<geoCoordinate id="EE07501D62784F2DFB47FEF25A755634" box="[1217,1369,294,321]" degrees="41,65" direction="west" orientation="longitude" pageId="10" pageNumber="515" precision="555" value="-41.65">014 41,65°W</geoCoordinate>
;
<quantity id="4CCB9B3F62784F2DFAE2FEF25F9C5610" metricMagnitude="3" metricUnit="m" metricValue="1.7289999999999999" pageId="10" pageNumber="515" unit="m" value="1729.0">1729 m</quantity>
;
<date id="FF8D101A62784F2DFF3AFE9E5E625610" box="[188,334,331,357]" pageId="10" pageNumber="515" value="1997-07-11">11 July 1997</date>
; BIOICE stn. 3067; SMNH-87642
</materialsCitation>
.
</paragraph>
</subSubSection>
<caption id="DF4C665262784F2DFF11F9295A0E50D1" ID-DOI="http://doi.org/10.5281/zenodo.4704435" ID-Zenodo-Dep="4704435" httpUri="https://zenodo.org/record/4704435/files/figure.png" pageId="10" pageNumber="515" startId="10.[151,250,1788,1812]" targetBox="[151,1435,378,1762]" targetPageId="10">
<paragraph id="8B8C36DA62784F2DFF11F9295A0E50D1" blockId="10.[151,1437,1788,1956]" pageId="10" pageNumber="515">
<emphasis id="B947EAC862784F2DFF11F9295E395061" bold="true" box="[151,277,1788,1812]" pageId="10" pageNumber="515">FIGURE 2.</emphasis>
AE,
<taxonomicName id="4C334D5962784F2DFEDDF9295D9F5061" authority=", Galathea II" authorityName="Galathea II" box="[347,691,1788,1812]" class="Ophiuroidea" family="Ophiuridae" genus="Ophiura" kingdom="Animalia" order="Ophiurida" pageId="10" pageNumber="515" phylum="Echinodermata" rank="species" species="spinicantha">
<emphasis id="B947EAC862784F2DFEDDF9295D1C5061" box="[347,560,1788,1812]" italics="true" pageId="10" pageNumber="515">Ophiura spinicantha</emphasis>
, Galathea II
</taxonomicName>
stn. 668. AB SMNH-130496, A, dorsal disc, B, dorsal arm and radial shields, CD, SMNH-130494, C, lateral arm with spines, D, ventral arm, E, ventral disc, SMHN-130495. FH,
<taxonomicName id="4C334D5962784F2DFA82F8F55FE65029" baseAuthorityName="Lyman" baseAuthorityYear="1878" class="Ophiuroidea" family="Ophiuridae" genus="Ophiura" kingdom="Animalia" order="Ophiurida" pageId="10" pageNumber="515" phylum="Echinodermata" rank="species" species="ljungmani">
<emphasis id="B947EAC862784F2DFA82F8F55FE65029" italics="true" pageId="10" pageNumber="515">Ophiura ljungmani</emphasis>
</taxonomicName>
, Iceland, BIOICE expedition. F, dorsal arm, disc segment with radial shields, SMNH-87642, G, same individual as F, disc spines, H, ventral aspect, SMNH-41981. SEM images. AdS, adoral shield, AS, arm spine, DAP, dorsal arm plate, OPa, oral papillae sensu lato, OS, oral shield, RS, radial shield, VAP, ventral arm plate. Scale bars A-F = 1 mm, G = 0.1 mm.
</paragraph>
</caption>
<subSubSection id="C329655162794F2CFF11FF425E815364" pageId="11" pageNumber="516" type="discussion">
<paragraph id="8B8C36DA62794F2CFF11FF425E2557C4" blockId="11.[151,265,151,177]" box="[151,265,151,177]" pageId="11" pageNumber="516">
<emphasis id="B947EAC862794F2CFF11FF425E2557C4" bold="true" box="[151,265,151,177]" pageId="11" pageNumber="516">Remarks</emphasis>
</paragraph>
<paragraph id="8B8C36DA62794F2CFF11FF0A5E815364" blockId="11.[151,1437,223,1041]" pageId="11" pageNumber="516">
This species strongly resembles the Atlantic
<taxonomicName id="4C334D5962794F2CFD1DFF0A5C42578C" box="[667,878,223,249]" class="Ophiuroidea" family="Ophiuridae" genus="Ophiura" kingdom="Animalia" order="Ophiurida" pageId="11" pageNumber="516" phylum="Echinodermata" rank="species" species="ljungman">
<emphasis id="B947EAC862794F2CFD1DFF0A5C42578C" box="[667,878,223,249]" italics="true" pageId="11" pageNumber="516">Ophiura ljungman</emphasis>
</taxonomicName>
i (
<bibRefCitation id="EFA24B2B62794F2CFC01FF0A5B0F578C" author="Lyman" box="[903,1059,223,249]" firstAuthor="Lyman" pageId="11" pageNumber="516" pagination="65 - 168" refId="ref16006" refString="Lyman, T. (1878) Ophiuridae and Astrophytidae of the &quot; Challenger &quot; expedition. Part I. Bulletin of the Museum of Comparative Zoology at Harvard, 5, 65 - 168." type="journal article" year="1878">Lyman, 1878</bibRefCitation>
). They differ in the shape of the dorsal arm plates, which in
<taxonomicName id="4C334D5962794F2CFE52FED15D565668" box="[468,634,259,286]" class="Ophiuroidea" family="Ophiuridae" genus="Ophiura" kingdom="Animalia" order="Ophiurida" pageId="11" pageNumber="516" phylum="Echinodermata" rank="species" species="spinicantha">
<emphasis id="B947EAC862794F2CFE52FED15EC4566B" box="[468,488,260,286]" italics="true" pageId="11" pageNumber="516">O</emphasis>
.
<emphasis id="B947EAC862794F2CFE71FED65D565668" box="[503,634,259,285]" italics="true" pageId="11" pageNumber="516">spinicantha</emphasis>
</taxonomicName>
(
<figureCitation id="13082A5F62794F2CFD0CFED65C285668" box="[650,772,259,285]" captionStart="FIGURE 2" captionStartId="10.[151,250,1788,1812]" captionTargetBox="[151,1435,378,1762]" captionTargetId="figure-97@10.[151,1435,378,1762]" captionTargetPageId="10" captionText="FIGURE 2. AE, Ophiura spinicantha, Galathea II stn. 668. AB SMNH-130496, A, dorsal disc, B, dorsal arm and radial shields, CD, SMNH-130494, C, lateral arm with spines, D, ventral arm, E, ventral disc, SMHN-130495. FH, Ophiura ljungmani, Iceland, BIOICE expedition. F, dorsal arm, disc segment with radial shields, SMNH-87642, G, same individual as F, disc spines, H, ventral aspect, SMNH-41981. SEM images. AdS, adoral shield, AS, arm spine, DAP, dorsal arm plate, OPa, oral papillae sensu lato, OS, oral shield, RS, radial shield, VAP, ventral arm plate. Scale bars A-F = 1 mm, G = 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.4704435" httpUri="https://zenodo.org/record/4704435/files/figure.png" pageId="11" pageNumber="516">Fig. 2AE</figureCitation>
) are rectangular, proximally wider than long, but soon becoming longer than wide, with a notch in their distal edge, and hexagonal, with straight edges, at the distal end with slanted sides in
<taxonomicName id="4C334D5962794F2CFECBFE995ECE5610" baseAuthorityName="Lyman" baseAuthorityYear="1878" box="[333,482,331,358]" class="Ophiuroidea" family="Ophiuridae" genus="Ophiura" kingdom="Animalia" order="Ophiurida" pageId="11" pageNumber="516" phylum="Echinodermata" rank="species" species="ljungmani">
<emphasis id="B947EAC862794F2CFECBFE995E4D5613" box="[333,353,332,358]" italics="true" pageId="11" pageNumber="516">O</emphasis>
.
<emphasis id="B947EAC862794F2CFEF6FE9E5ECE5610" box="[368,482,331,357]" italics="true" pageId="11" pageNumber="516">ljungmani</emphasis>
</taxonomicName>
(
<figureCitation id="13082A5F62794F2CFE74FE9E5D655610" box="[498,585,331,357]" captionStart="FIGURE 2" captionStartId="10.[151,250,1788,1812]" captionTargetBox="[151,1435,378,1762]" captionTargetId="figure-97@10.[151,1435,378,1762]" captionTargetPageId="10" captionText="FIGURE 2. AE, Ophiura spinicantha, Galathea II stn. 668. AB SMNH-130496, A, dorsal disc, B, dorsal arm and radial shields, CD, SMNH-130494, C, lateral arm with spines, D, ventral arm, E, ventral disc, SMHN-130495. FH, Ophiura ljungmani, Iceland, BIOICE expedition. F, dorsal arm, disc segment with radial shields, SMNH-87642, G, same individual as F, disc spines, H, ventral aspect, SMNH-41981. SEM images. AdS, adoral shield, AS, arm spine, DAP, dorsal arm plate, OPa, oral papillae sensu lato, OS, oral shield, RS, radial shield, VAP, ventral arm plate. Scale bars A-F = 1 mm, G = 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.4704435" httpUri="https://zenodo.org/record/4704435/files/figure.png" pageId="11" pageNumber="516">Fig. 2F</figureCitation>
). The disc scalation is finer in
<taxonomicName id="4C334D5962794F2CFC2EFE995B625610" box="[936,1102,331,358]" class="Ophiuroidea" family="Ophiuridae" genus="Ophiura" kingdom="Animalia" order="Ophiurida" pageId="11" pageNumber="516" phylum="Echinodermata" rank="species" species="spinicantha">
<emphasis id="B947EAC862794F2CFC2EFE995B625610" box="[936,1102,331,358]" italics="true" pageId="11" pageNumber="516">O. spinicantha</emphasis>
</taxonomicName>
than in
<taxonomicName id="4C334D5962794F2CFB2AFE995A6E5610" baseAuthorityName="Lyman" baseAuthorityYear="1878" box="[1196,1346,331,358]" class="Ophiuroidea" family="Ophiuridae" genus="Ophiura" kingdom="Animalia" order="Ophiurida" pageId="11" pageNumber="516" phylum="Echinodermata" rank="species" species="ljungmani">
<emphasis id="B947EAC862794F2CFB2AFE995A6E5610" box="[1196,1346,331,358]" italics="true" pageId="11" pageNumber="516">O. ljungmani</emphasis>
</taxonomicName>
and the oral shield is somewhat larger in proportion (
<figureCitation id="13082A5F62794F2CFD08FEBA5C2156FF" box="[654,781,367,394]" captionStart="FIGURE 2" captionStartId="10.[151,250,1788,1812]" captionTargetBox="[151,1435,378,1762]" captionTargetId="figure-97@10.[151,1435,378,1762]" captionTargetPageId="10" captionText="FIGURE 2. AE, Ophiura spinicantha, Galathea II stn. 668. AB SMNH-130496, A, dorsal disc, B, dorsal arm and radial shields, CD, SMNH-130494, C, lateral arm with spines, D, ventral arm, E, ventral disc, SMHN-130495. FH, Ophiura ljungmani, Iceland, BIOICE expedition. F, dorsal arm, disc segment with radial shields, SMNH-87642, G, same individual as F, disc spines, H, ventral aspect, SMNH-41981. SEM images. AdS, adoral shield, AS, arm spine, DAP, dorsal arm plate, OPa, oral papillae sensu lato, OS, oral shield, RS, radial shield, VAP, ventral arm plate. Scale bars A-F = 1 mm, G = 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.4704435" httpUri="https://zenodo.org/record/4704435/files/figure.png" pageId="11" pageNumber="516">Figs 2E; H</figureCitation>
). Both species usually have three arm spines (occasionally four), two small ones close together at the ventral end of the lateral arm plate, the third is placed widely spaced on the dorsal part of the lateral arm plate, up to twice as long as the ventral spines in
<taxonomicName id="4C334D5962794F2CFBACFE6D5BEC56A4" baseAuthorityName="Lyman" baseAuthorityYear="1878" box="[1066,1216,439,466]" class="Ophiuroidea" family="Ophiuridae" genus="Ophiura" kingdom="Animalia" order="Ophiurida" pageId="11" pageNumber="516" phylum="Echinodermata" rank="species" species="ljungmani">
<emphasis id="B947EAC862794F2CFBACFE6D5B1256A7" box="[1066,1086,440,466]" italics="true" pageId="11" pageNumber="516">O</emphasis>
.
<emphasis id="B947EAC862794F2CFBCAFE625BEC56A4" box="[1100,1216,439,465]" italics="true" pageId="11" pageNumber="516">ljungmani</emphasis>
</taxonomicName>
<emphasis id="B947EAC862794F2CFB46FE625BE856A4" box="[1216,1220,439,465]" italics="true" pageId="11" pageNumber="516">,</emphasis>
but shorter than an arm segment. The
<typeStatus id="5488887862794F2CFEEEFE0E5EE65680" box="[360,458,475,501]" pageId="11" pageNumber="516" type="holotype">holotype</typeStatus>
of
<taxonomicName id="4C334D5962794F2CFE69FE095DB95680" box="[495,661,475,502]" class="Ophiuroidea" family="Ophiuridae" genus="Ophiura" kingdom="Animalia" order="Ophiurida" pageId="11" pageNumber="516" phylum="Echinodermata" rank="species" species="spinicantha">
<emphasis id="B947EAC862794F2CFE69FE095D2F5683" box="[495,515,476,502]" italics="true" pageId="11" pageNumber="516">O</emphasis>
.
<emphasis id="B947EAC862794F2CFD94FE0E5DB95680" box="[530,661,475,501]" italics="true" pageId="11" pageNumber="516">spinicantha</emphasis>
</taxonomicName>
may have lacked the second small ventral spine or
<bibRefCitation id="EFA24B2B62794F2CFB51FE0E5AB05680" author="McKnight" box="[1239,1436,475,501]" firstAuthor="McKnight" pageId="11" pageNumber="516" pagination="1 - 36" refId="ref16177" refString="McKnight, D. (2003) New brittle-stars (Echinodermata: Ophiuroidea) from New Zealand waters. Zootaxa, 352 (1), 1 - 36. https: // doi. org / 10.11646 / zootaxa. 352.1.1" type="journal article" year="2003">McKnight (2003)</bibRefCitation>
may have mistaken it for a tentacle scale, when he described
<taxonomicName id="4C334D5962794F2CFCC6FDD55CC9556C" box="[832,997,511,538]" class="Ophiuroidea" family="Ophiuridae" genus="Ophiura" kingdom="Animalia" order="Ophiurida" pageId="11" pageNumber="516" phylum="Echinodermata" rank="species" species="spinicantha">
<emphasis id="B947EAC862794F2CFCC6FDD55CC9556C" box="[832,997,511,538]" italics="true" pageId="11" pageNumber="516">O. spinicantha</emphasis>
</taxonomicName>
as having only two spines at a distance from each other. Both species also have scattered spines on the dorsal disc (
<figureCitation id="13082A5F62794F2CFC61FDF65B6D5548" box="[999,1089,547,573]" captionStart="FIGURE 2" captionStartId="10.[151,250,1788,1812]" captionTargetBox="[151,1435,378,1762]" captionTargetId="figure-97@10.[151,1435,378,1762]" captionTargetPageId="10" captionText="FIGURE 2. AE, Ophiura spinicantha, Galathea II stn. 668. AB SMNH-130496, A, dorsal disc, B, dorsal arm and radial shields, CD, SMNH-130494, C, lateral arm with spines, D, ventral arm, E, ventral disc, SMHN-130495. FH, Ophiura ljungmani, Iceland, BIOICE expedition. F, dorsal arm, disc segment with radial shields, SMNH-87642, G, same individual as F, disc spines, H, ventral aspect, SMNH-41981. SEM images. AdS, adoral shield, AS, arm spine, DAP, dorsal arm plate, OPa, oral papillae sensu lato, OS, oral shield, RS, radial shield, VAP, ventral arm plate. Scale bars A-F = 1 mm, G = 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.4704435" httpUri="https://zenodo.org/record/4704435/files/figure.png" pageId="11" pageNumber="516">Fig. 2G</figureCitation>
), which are often rubbed off in preserved material. Morphologically similar to these species is
<taxonomicName id="4C334D5962794F2CFCEAFD925A2F5514" authority="H. L. Clark, 1911" authorityName="H. L. Clark" authorityYear="1911" box="[876,1283,583,610]" class="Ophiuroidea" family="Ophiuridae" genus="Ophiura" kingdom="Animalia" order="Ophiurida" pageId="11" pageNumber="516" phylum="Echinodermata" rank="species" species="bathybia">
<emphasis id="B947EAC862794F2CFCEAFD925B1A5514" box="[876,1078,583,609]" italics="true" pageId="11" pageNumber="516">Ophiura bathybia</emphasis>
H.L. Clark, 1911
</taxonomicName>
, known from the North Pacific, and which appears to have more disc spines than the other two species and the dorsal arm spine is longer than an arm segment (
<bibRefCitation id="EFA24B2B62794F2CFE78FD5A5DE455DC" author="Fujita" box="[510,712,655,681]" etAl="et al." firstAuthor="Fujita" pageId="11" pageNumber="516" pagination="619 - 653" refId="ref15476" refString="Fujita, T., Iwasaki, U. &amp; Okanishi, M. (2009) Ophiuroids (Echinodermata) of genus Ophiura collected from deep waters off Pacific coast of northern Japan. In: Fujita, T. (Ed.), Deep-sea Fauna and Pollutants off Pacific Coast of Northern Japan. National Museum of Nature and Science Monographs, Tokyo, 34, pp. 619 - 653." type="journal article" year="2009">
Fujita
<emphasis id="B947EAC862794F2CFDCCFD455DAF55DC" box="[586,643,655,681]" italics="true" pageId="11" pageNumber="516">et al.</emphasis>
2009
</bibRefCitation>
). Genetically these three species are distinct, but closely related (
<bibRefCitation id="EFA24B2B62794F2CFF19FD665EEA55B8" author="Christodoulou" box="[159,454,691,717]" etAl="et al." firstAuthor="Christodoulou" pageId="11" pageNumber="516" pagination="3909 - 3912" refId="ref15309" refString="Christodoulou, M., O'Hara, T. D., Hugall, A. F. &amp; Arbizu, P. M. (2019) Dark Ophiuroid Biodiversity in a Prospective Abyssal Mine Field. Current Biology, 29, 3909 - 3912. https: // doi. org / 10.1016 / j. cub. 2019.09.012" type="journal article" year="2019">
Christodoulou
<emphasis id="B947EAC862794F2CFECFFD615EAF55B8" box="[329,387,691,717]" italics="true" pageId="11" pageNumber="516">et al.</emphasis>
2019
</bibRefCitation>
; OHara unpublished data).
<taxonomicName id="4C334D5962794F2CFC8EFD665CCD55B8" baseAuthorityName="Lyman" baseAuthorityYear="1878" box="[776,993,691,717]" class="Ophiuroidea" family="Ophiuridae" genus="Ophiura" kingdom="Animalia" order="Ophiurida" pageId="11" pageNumber="516" phylum="Echinodermata" rank="species" species="ljungmani">
<emphasis id="B947EAC862794F2CFC8EFD665CCD55B8" box="[776,993,691,717]" italics="true" pageId="11" pageNumber="516">Ophiura ljungmani</emphasis>
</taxonomicName>
has the widest reported depth range of the three, with
<quantity id="4CCB9B3F62794F2CFEC6FD025EE25587" box="[320,462,727,754]" metricMagnitude="3" metricUnit="m" metricValue="2.1255" metricValueMax="4.15" metricValueMin="0.101" pageId="11" pageNumber="516" unit="m" value="2125.5" valueMax="4150.0" valueMin="101.0">1014150 m</quantity>
(
<bibRefCitation id="EFA24B2B62794F2CFE5AFD025DAD5587" author="Paterson" box="[476,641,727,754]" firstAuthor="Paterson" pageId="11" pageNumber="516" pagination="1 - 162" refId="ref16471" refString="Paterson, G. L. J. (1985) The deep-sea Ophiuroidea of the North Atlantic Ocean. Bulletin of the British Museum (Natural History), Zoology Series, 49, 1 - 162." type="journal article" year="1985">Paterson 1985</bibRefCitation>
), but we suspect that the few shallowest records may be misidentifications of another species (possibly
<taxonomicName id="4C334D5962794F2CFD97FD2E5CAA5463" authority="(Lyman, 1869)" baseAuthorityName="Lyman" baseAuthorityYear="1869" box="[529,902,763,790]" class="Ophiuroidea" family="Ophiuridae" genus="Ophiura" kingdom="Animalia" order="Ophiurida" pageId="11" pageNumber="516" phylum="Echinodermata" rank="species" species="acervata">
<emphasis id="B947EAC862794F2CFD97FD2E5DF55460" box="[529,729,763,789]" italics="true" pageId="11" pageNumber="516">Ophiura acervata</emphasis>
(Lyman, 1869)
</taxonomicName>
or
<taxonomicName id="4C334D5962794F2CFC2CFD2E5A065463" authority="Cherbonnier, 1959" authorityName="Cherbonnier" authorityYear="1959" box="[938,1322,763,790]" class="Ophiuroidea" family="Ophiuridae" genus="Ophiura" kingdom="Animalia" order="Ophiurida" pageId="11" pageNumber="516" phylum="Echinodermata" rank="species" species="fallax">
<emphasis id="B947EAC862794F2CFC2CFD2E5B7C5460" box="[938,1104,763,789]" italics="true" pageId="11" pageNumber="516">Ophiura fallax</emphasis>
Cherbonnier, 1959
</taxonomicName>
).
<taxonomicName id="4C334D5962794F2CFABBFD2E5E36544C" class="Ophiuroidea" family="Ophiuridae" genus="Ophiura" kingdom="Animalia" order="Ophiurida" pageId="11" pageNumber="516" phylum="Echinodermata" rank="species" species="spinicantha">
<emphasis id="B947EAC862794F2CFABBFD2E5E36544C" italics="true" pageId="11" pageNumber="516">Ophiura spinicantha</emphasis>
</taxonomicName>
was found by Galathea II at
<quantity id="4CCB9B3F62794F2CFDDFFCCA5DDF544F" box="[601,755,799,826]" metricMagnitude="3" metricUnit="m" metricValue="3.47" metricValueMax="4.47" metricValueMin="2.4699999999999998" pageId="11" pageNumber="516" unit="m" value="3470.0" valueMax="4470.0" valueMin="2470.0">24704470 m</quantity>
(
<tableCitation id="C6B1036162794F2CFC87FCCA5C78544C" box="[769,852,799,825]" captionStart="TABLE 1" captionStartId="2.[150,238,487,513]" captionTargetPageId="2" captionText="TABLE 1. Sampling stations of the Galathea II expedition, at which ophiuroids were collected and examined by this study, data from Bruun (1957). Station 451 was not listed in Bruun (1957), but a specimen was labelled as having been collected at that station. For full species names see Table 2." httpUri="http://table.plazi.org/id/DF4C665262704F25FF10FE325AAE5550" pageId="11" pageNumber="516" tableUuid="DF4C665262704F25FF10FE325AAE5550">Table 1</tableCitation>
), but type material was collected as shallow as
<quantity id="4CCB9B3F62794F2CFAE2FCCA5F81542B" metricMagnitude="3" metricUnit="m" metricValue="1.585" pageId="11" pageNumber="516" unit="m" value="1585.0">1585 m</quantity>
(
<bibRefCitation id="EFA24B2B62794F2CFF3DFC965E5E5428" author="McKnight" box="[187,370,835,861]" firstAuthor="McKnight" pageId="11" pageNumber="516" pagination="1 - 36" refId="ref16177" refString="McKnight, D. (2003) New brittle-stars (Echinodermata: Ophiuroidea) from New Zealand waters. Zootaxa, 352 (1), 1 - 36. https: // doi. org / 10.11646 / zootaxa. 352.1.1" type="journal article" year="2003">McKnight 2003</bibRefCitation>
), and
<taxonomicName id="4C334D5962794F2CFE32FC915D145428" authorityName="H. L. Clark" authorityYear="1911" box="[436,568,835,862]" class="Ophiuroidea" family="Ophiuridae" genus="Ophiura" kingdom="Animalia" order="Ophiurida" pageId="11" pageNumber="516" phylum="Echinodermata" rank="species" species="bathybia">
<emphasis id="B947EAC862794F2CFE32FC915EE4542B" box="[436,456,836,862]" italics="true" pageId="11" pageNumber="516">O</emphasis>
.
<emphasis id="B947EAC862794F2CFE50FC965D145428" box="[470,568,835,861]" italics="true" pageId="11" pageNumber="516">bathybia</emphasis>
</taxonomicName>
is known from
<quantity id="4CCB9B3F62794F2CFD61FC965CAE542B" box="[743,898,835,862]" metricMagnitude="3" metricUnit="m" metricValue="3.647" metricValueMax="4.425" metricValueMin="2.8689999999999998" pageId="11" pageNumber="516" unit="m" value="3647.0" valueMax="4425.0" valueMin="2869.0">28694425 m</quantity>
(
<bibRefCitation id="EFA24B2B62794F2CFC16FC965BB35428" author="Lambert &amp; Austin" box="[912,1183,835,861]" firstAuthor="Lambert" pageId="11" pageNumber="516" refId="ref15832" refString="Lambert, P. &amp; Austin, W. C. (2007) Brittle Stars, Sea Urchins and Feather Stars of British Columbia, Southeast Alaska and Puget Sound. Royal BC Museum, 190 pp." type="book" year="2007">Lambert &amp; Austin 2007</bibRefCitation>
), but was not found by this study. Geographically,
<taxonomicName id="4C334D5962794F2CFE43FCBD5D7454F4" baseAuthorityName="Lyman" baseAuthorityYear="1878" box="[453,600,871,898]" class="Ophiuroidea" family="Ophiuridae" genus="Ophiura" kingdom="Animalia" order="Ophiurida" pageId="11" pageNumber="516" phylum="Echinodermata" rank="species" species="ljungmani">
<emphasis id="B947EAC862794F2CFE43FCBD5EF554F7" box="[453,473,872,898]" italics="true" pageId="11" pageNumber="516">O</emphasis>
.
<emphasis id="B947EAC862794F2CFE60FCB25D7454F4" box="[486,600,871,897]" italics="true" pageId="11" pageNumber="516">ljungmani</emphasis>
</taxonomicName>
has been reported from both eastern and western sides of the North Atlantic Ocean and to
<collectingCountry id="F324764A62794F2CFEB6FC5E5E9354D0" box="[304,447,907,933]" name="South Africa" pageId="11" pageNumber="516">South Africa</collectingCountry>
(found by Galathea II only off West Africa,
<tableCitation id="C6B1036162794F2CFC2CFC5E5B2B54D0" box="[938,1031,907,933]" captionStart="TABLE 1" captionStartId="2.[150,238,487,513]" captionTargetPageId="2" captionText="TABLE 1. Sampling stations of the Galathea II expedition, at which ophiuroids were collected and examined by this study, data from Bruun (1957). Station 451 was not listed in Bruun (1957), but a specimen was labelled as having been collected at that station. For full species names see Table 2." httpUri="http://table.plazi.org/id/DF4C665262704F25FF10FE325AAE5550" pageId="11" pageNumber="516" tableUuid="DF4C665262704F25FF10FE325AAE5550">Tables 1</tableCitation>
,
<tableCitation id="C6B1036162794F2CFB93FC5E5B0954D0" box="[1045,1061,907,933]" captionStart="TABLE 2" captionStartId="6.[151,239,873,897]" captionTargetPageId="6" captionText="TABLE 2. Deepsea brittle star species collected by the Galathea II expedition. Station numbers were taken from Bruun (1957) and correspond to table 1." httpUri="http://table.plazi.org/id/DF4C665262744F21FF11FCBC5ED654D0" pageId="11" pageNumber="516" tableUuid="DF4C665262744F21FF11FCBC5ED654D0">2</tableCitation>
), whereas
<taxonomicName id="4C334D5962794F2CFB1AFC595A6D54D0" box="[1180,1345,907,934]" class="Ophiuroidea" family="Ophiuridae" genus="Ophiura" kingdom="Animalia" order="Ophiurida" pageId="11" pageNumber="516" phylum="Echinodermata" rank="species" species="spinicantha">
<emphasis id="B947EAC862794F2CFB1AFC595B9C54D3" box="[1180,1200,908,934]" italics="true" pageId="11" pageNumber="516">O</emphasis>
.
<emphasis id="B947EAC862794F2CFB38FC5E5A6D54D0" box="[1214,1345,907,933]" italics="true" pageId="11" pageNumber="516">spinicantha</emphasis>
</taxonomicName>
appears to be restricted to southern
<collectingCountry id="F324764A62794F2CFE40FC7A5D0154BC" box="[454,557,943,969]" name="Australia" pageId="11" pageNumber="516">Australia</collectingCountry>
and
<collectingCountry id="F324764A62794F2CFDE5FC655DD554BC" box="[611,761,943,970]" name="New Zealand" pageId="11" pageNumber="516">New Zealand</collectingCountry>
(here found in the
<collectingRegion id="49F7F83862794F2CFC4BFC655B0854BF" box="[973,1060,944,970]" country="New Zealand" name="Tasman" pageId="11" pageNumber="516">Tasman</collectingRegion>
Sea and Kermadec Trench,
<tableCitation id="C6B1036162794F2CFAD9FC7A5F8B5498" captionStart="TABLE 2" captionStartId="6.[151,239,873,897]" captionTargetPageId="6" captionText="TABLE 2. Deepsea brittle star species collected by the Galathea II expedition. Station numbers were taken from Bruun (1957) and correspond to table 1." httpUri="http://table.plazi.org/id/DF4C665262744F21FF11FCBC5ED654D0" pageId="11" pageNumber="516" tableUuid="DF4C665262744F21FF11FCBC5ED654D0">Table 2</tableCitation>
), and
<taxonomicName id="4C334D5962794F2CFF68FC015E5F5498" authorityName="H. L. Clark" authorityYear="1911" box="[238,371,979,1006]" class="Ophiuroidea" family="Ophiuridae" genus="Ophiura" kingdom="Animalia" order="Ophiurida" pageId="11" pageNumber="516" phylum="Echinodermata" rank="species" species="bathybia">
<emphasis id="B947EAC862794F2CFF68FC015E2E549B" box="[238,258,980,1006]" italics="true" pageId="11" pageNumber="516">O</emphasis>
.
<emphasis id="B947EAC862794F2CFE97FC065E5F5498" box="[273,371,979,1005]" italics="true" pageId="11" pageNumber="516">bathybia</emphasis>
</taxonomicName>
occurs in the North Pacific from
<collectingCountry id="F324764A62794F2CFD77FC015C1D549B" box="[753,817,980,1006]" name="Japan" pageId="11" pageNumber="516">Japan</collectingCountry>
to the high Arctic (
<bibRefCitation id="EFA24B2B62794F2CFB88FC065BEE549B" author="Djakonov" box="[1038,1218,979,1006]" firstAuthor="Djakonov" pageId="11" pageNumber="516" refId="ref15398" refString="Djakonov, A. M. (1954) 55 Ophiuroids of the USSR seas (English translation). Izdatel'stvo Akademii Nauk SSSR (Israel Program for Scientific Translations), Moscow / Leningrad (Jerusalem), 123 pp." type="book" year="1954">Djakonov 1954</bibRefCitation>
;
<bibRefCitation id="EFA24B2B62794F2CFB48FC065FFE5364" author="Lambert &amp; Austin" firstAuthor="Lambert" pageId="11" pageNumber="516" refId="ref15832" refString="Lambert, P. &amp; Austin, W. C. (2007) Brittle Stars, Sea Urchins and Feather Stars of British Columbia, Southeast Alaska and Puget Sound. Royal BC Museum, 190 pp." type="book" year="2007">Lambert &amp; Austin 2007</bibRefCitation>
,
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