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<document id="7A7C50FDEFA629C32192F3024EADE02A" ID-DOI="10.1080/14772019.2016.1245680" ID-ISSN="1478-0941" ID-Zenodo-Dep="10883052" ID-ZooBank="3EBCAEF3-27C2-4216-9F18-89F195FA534F" IM.bibliography_approvedBy="felipe" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1711483395715" checkinUser="felipe" docAuthor="Foster, William J., Danise, Silvia &amp; Twitchett, Richard J." docDate="2017" docId="C53B0B4D8040E83A6EC0FD698EF0203F" docLanguage="en" docName="JSystPalaeontol.15.10.851-877.pdf" docOrigin="Journal of Systematic Palaeontology 15 (10)" docSource="http://dx.doi.org/10.1080/14772019.2016.1245680" docStyle="DocumentStyle:602474738E3D100F0F13788B53F61545.2:JSystPalaeontol.2016-.journal_article.open" docStyleId="602474738E3D100F0F13788B53F61545" docStyleName="JSystPalaeontol.2016-.journal_article.open" docStyleVersion="2" docTitle="Glabrocingulum parvum Foster &amp; Danise &amp; Twitchett 2017, sp. nov." docType="treatment" docVersion="2" lastPageNumber="867" masterDocId="390273358050E82B6D0FFFE98D67263C" masterDocTitle="A silicified Early Triassic marine assemblage from Svalbard" masterLastPageNumber="877" masterPageNumber="851" pageNumber="866" updateTime="1711483788606" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-4.0">
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<mods:title id="A97CBC4E6186A85634BE2AEC26BF6EAA">A silicified Early Triassic marine assemblage from Svalbard</mods:title>
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<mods:namePart id="0F824CC3AA0F835B6FF4F4A20AEB9DFE">Foster, William J.</mods:namePart>
<mods:affiliation id="74F8582815799DCFD373BF3EF1E66EDF">Jackson School of Geosciences, University of Texas, Austin, TX 78712, USA; &amp; Earth Sciences, Plymouth University, Plymouth, PL 4 8 AA, UK; &amp; Department of Earth Sciences, Natural History Museum, London, SW 7 5 BD, UK;</mods:affiliation>
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<mods:namePart id="8E777598176163BC3E003A8880DC141B">Danise, Silvia</mods:namePart>
<mods:affiliation id="EEA81F141E25636F3501AAF21B80D741">Earth Sciences, Plymouth University, Plymouth, PL 4 8 AA, UK; &amp; Department of Geology, University of Georgia, Athens, GA 30602, USA</mods:affiliation>
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<mods:namePart id="40239F1BD761F8824A09E6A51C02C6E3">Twitchett, Richard J.</mods:namePart>
<mods:affiliation id="A9EFB1BC797730762FBB9C72B0B24C0E">Department of Earth Sciences, Natural History Museum, London, SW 7 5 BD, UK;</mods:affiliation>
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<treatment id="C53B0B4D8040E83A6EC0FD698EF0203F" ID-DOI="http://doi.org/10.5281/zenodo.10883124" ID-Zenodo-Dep="10883124" LSID="urn:lsid:plazi:treatment:C53B0B4D8040E83A6EC0FD698EF0203F" httpUri="http://treatment.plazi.org/id/C53B0B4D8040E83A6EC0FD698EF0203F" lastPageId="17" lastPageNumber="867" pageId="16" pageNumber="866">
<subSubSection id="0588E9D08040E83B6EC0FD69885E24A4" box="[975,1337,640,664]" pageId="16" pageNumber="866" type="nomenclature">
<paragraph id="4D2DBA5B8040E83B6EC0FD69885E24A4" blockId="16.[975,1337,640,696]" box="[975,1337,640,664]" pageId="16" pageNumber="866">
<heading id="16650D378040E83B6EC0FD69885E24A4" box="[975,1337,640,664]" centered="true" fontSize="10" level="2" pageId="16" pageNumber="866" reason="8">
<taxonomicName id="8A92C1D88040E83B6EC0FD6989B824A4" authority="Foster &amp; Danise &amp; Twitchett, 2017" authorityName="Foster &amp; Danise &amp; Twitchett" authorityYear="2017" box="[975,1247,640,664]" class="Gastropoda" family="Eotomariidae" genus="Glabrocingulum" kingdom="Animalia" order="Pleurotomariida" pageId="16" pageNumber="866" phylum="Mollusca" rank="species" species="parvum" status="sp. nov.">
<emphasis id="7FE666498040E83B6EC0FD6989B824A4" bold="true" box="[975,1247,640,664]" italics="true" pageId="16" pageNumber="866">Glabrocingulum parvum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="64D5DB328040E83B69E9FD68885E24A4" box="[1254,1337,641,664]" pageId="16" pageNumber="866" rank="species">sp. nov.</taxonomicNameLabel>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="0588E9D08040E83B695AFD4889D52484" box="[1109,1202,673,696]" pageId="16" pageNumber="866" type="description">
<paragraph id="4D2DBA5B8040E83B695AFD4889D52484" blockId="16.[975,1337,640,696]" box="[1109,1202,673,696]" pageId="16" pageNumber="866">
(
<figureCitation id="D5A9A6DE8040E83B6951FD4889CD2484" box="[1118,1194,673,696]" captionStart="Figure 11" captionStartId="17.[159,227,954,975]" captionTargetBox="[175,1452,183,922]" captionTargetId="figure-390@17.[175,1452,183,922]" captionTargetPageId="17" captionText="Figure 11. Glabrocingulum parvum sp. nov. A, B, apertural view; A, holotype, NHMUK PI MG 1531; B, paratype, NHMUK PI MG 1518; CE, NHMUK PI MG 1531; C, lateral view; D, side view of initial whorls; E, apical view; F, apertural view of a larval shell, NHMUK PI MG 1520. Scale bars = 1 mm, except F." figureDoi="http://doi.org/10.5281/zenodo.10883080" httpUri="https://zenodo.org/record/10883080/files/figure.png" pageId="16" pageNumber="866">Fig. 11</figureCitation>
)
</paragraph>
</subSubSection>
<subSubSection id="0588E9D08040E83B6E42FD338857256D" pageId="16" pageNumber="866" type="diagnosis">
<paragraph id="4D2DBA5B8040E83B6E42FD338857256D" blockId="16.[845,1467,730,849]" pageId="16" pageNumber="866">
<emphasis id="7FE666498040E83B6E42FD338EA624CD" bold="true" box="[845,961,730,753]" pageId="16" pageNumber="866">Diagnosis.</emphasis>
Moderately low-spired shells with faint spiral ornament without sutural nodes. Broad selenizone in relation to whorl height with sharp edges. Deeply concave selenizone. Funicle absent or weakly formed.
</paragraph>
</subSubSection>
<subSubSection id="0588E9D08040E83B6E42FC9A8EBA238A" pageId="16" pageNumber="866" type="materials_examined">
<paragraph id="4D2DBA5B8040E83B6E42FC9A89052596" blockId="16.[845,1467,883,938]" pageId="16" pageNumber="866">
<materialsCitation id="FDFAB0068040E83B6E42FC9A89052596" collectionCode="NHMUK, PI" pageId="16" pageNumber="866" specimenCode="MG 1531" specimenCount="1" typeStatus="holotype">
<emphasis id="7FE666498040E83B6E42FC9A8EDC25B6" bold="true" box="[845,955,883,906]" pageId="16" pageNumber="866">
<typeStatus id="922904F98040E83B6E42FC9A8ED025B6" box="[845,951,883,906]" pageId="16" pageNumber="866" type="holotype">Holotype</typeStatus>
.
</emphasis>
Dextral shell,
<collectionCode id="2B83229E8040E83B696FFC9A89A325B6" box="[1120,1220,883,906]" country="United Kingdom" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34665" lsid="urn:lsid:biocol.org:col:34665" name="Natural History Museum, London" pageId="16" pageNumber="866" type="Museum">NHMUK</collectionCode>
<collectionCode id="2B83229E8040E83B69C5FC9A898525B6" box="[1226,1250,883,906]" country="Russia" name="Paleontological Institute" pageId="16" pageNumber="866">PI</collectionCode>
<specimenCode id="1D3412208040E83B69E7FC9A883625B6" box="[1256,1361,883,906]" collectionCode="MG" country="China" name="Museum of Zoology" pageId="16" pageNumber="866">MG 1531</specimenCode>
; height = 2.5 mm, width = 3.0 mm.
</materialsCitation>
</paragraph>
<paragraph id="4D2DBA5B8040E83B6E42FC2489052238" blockId="16.[845,1467,973,1028]" pageId="16" pageNumber="866">
<materialsCitation id="FDFAB0068040E83B6E42FC2489392238" collectionCode="NHMUK, PI" pageId="16" pageNumber="866" specimenCode="MG 1518" specimenCount="1" typeStatus="paratype">
<emphasis id="7FE666498040E83B6E42FC248EDC25D8" bold="true" box="[845,955,973,996]" pageId="16" pageNumber="866">
<typeStatus id="922904F98040E83B6E42FC248ED025D8" box="[845,951,973,996]" pageId="16" pageNumber="866" type="paratype">Paratype</typeStatus>
.
</emphasis>
Dextral shell,
<collectionCode id="2B83229E8040E83B696FFC2489A325D8" box="[1120,1220,973,996]" country="United Kingdom" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34665" lsid="urn:lsid:biocol.org:col:34665" name="Natural History Museum, London" pageId="16" pageNumber="866" type="Museum">NHMUK</collectionCode>
<collectionCode id="2B83229E8040E83B69C5FC24898525D8" box="[1226,1250,973,996]" country="Russia" name="Paleontological Institute" pageId="16" pageNumber="866">PI</collectionCode>
<specimenCode id="1D3412208040E83B69E7FC24883625D8" box="[1256,1361,973,996]" collectionCode="MG" country="China" name="Museum of Zoology" pageId="16" pageNumber="866">MG 1518</specimenCode>
; height = 2.0 mm, width = 2.0 mm
</materialsCitation>
.
</paragraph>
<paragraph id="4D2DBA5B8040E83B6E42FBCF88E82360" blockId="16.[845,1467,1062,1372]" pageId="16" pageNumber="866">
<emphasis id="7FE666498040E83B6E42FBCF89642201" bold="true" box="[845,1027,1062,1085]" pageId="16" pageNumber="866">Other material.</emphasis>
<materialsCitation id="FDFAB0068040E83B691EFBCF88EB2360" collectionCode="NHMUK, PI" pageId="16" pageNumber="866" specimenCode="MG 1468, MG 1471, MG 1495, MG 1500-1501, MG 1513-1515, PEI 5519-5520, MG 1476, MG 1482, MG 1484, MG 1493, MG 1530, MG 1516-1517, MG 1519-1529" specimenCount="28" specimenCount-juvenile="14">
Ten specimens from LD-04 (
<collectionCode id="2B83229E8040E83B685BFBCF88DD2201" box="[1364,1466,1062,1085]" country="United Kingdom" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34665" lsid="urn:lsid:biocol.org:col:34665" name="Natural History Museum, London" pageId="16" pageNumber="866" type="Museum">NHMUK</collectionCode>
<collectionCode id="2B83229E8040E83B6E42FBAF8E022261" box="[845,869,1094,1117]" country="Russia" name="Paleontological Institute" pageId="16" pageNumber="866">PI</collectionCode>
<specimenCode id="1D3412208040E83B6E7FFBAF8EB92261" box="[880,990,1094,1117]" collectionCode="MG" country="China" name="Museum of Zoology" pageId="16" pageNumber="866">MG 1468</specimenCode>
;
<collectionCode id="2B83229E8040E83B6EE2FBAF89362261" box="[1005,1105,1094,1117]" country="United Kingdom" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34665" lsid="urn:lsid:biocol.org:col:34665" name="Natural History Museum, London" pageId="16" pageNumber="866" type="Museum">NHMUK</collectionCode>
<collectionCode id="2B83229E8040E83B6952FBAF89122261" box="[1117,1141,1094,1117]" country="Russia" name="Paleontological Institute" pageId="16" pageNumber="866">PI</collectionCode>
<specimenCode id="1D3412208040E83B698FFBAF89892261" box="[1152,1262,1094,1117]" collectionCode="MG" country="China" name="Museum of Zoology" pageId="16" pageNumber="866">MG 1471</specimenCode>
;
<collectionCode id="2B83229E8040E83B69F1FBAF88052261" box="[1278,1378,1094,1117]" country="United Kingdom" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34665" lsid="urn:lsid:biocol.org:col:34665" name="Natural History Museum, London" pageId="16" pageNumber="866" type="Museum">NHMUK</collectionCode>
<collectionCode id="2B83229E8040E83B6862FBAF88E22261" box="[1389,1413,1094,1117]" country="Russia" name="Paleontological Institute" pageId="16" pageNumber="866">PI</collectionCode>
<specimenCode id="1D3412208040E83B689FFBAF8EE22241" collectionCode="MG" country="China" name="Museum of Zoology" pageId="16" pageNumber="866">MG 1495</specimenCode>
;
<collectionCode id="2B83229E8040E83B6E97FB8F8E9B2241" box="[920,1020,1126,1149]" country="United Kingdom" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34665" lsid="urn:lsid:biocol.org:col:34665" name="Natural History Museum, London" pageId="16" pageNumber="866" type="Museum">NHMUK</collectionCode>
<collectionCode id="2B83229E8040E83B6904FB8F89442241" box="[1035,1059,1126,1149]" country="Russia" name="Paleontological Institute" pageId="16" pageNumber="866">PI</collectionCode>
<specimenCode id="1D3412208040E83B693FFB8F89822241" box="[1072,1253,1126,1149]" collectionCode="MG" country="China" name="Museum of Zoology" pageId="16" pageNumber="866">MG 15001501</specimenCode>
;
<collectionCode id="2B83229E8040E83B69F8FB8F883C2241" box="[1271,1371,1126,1149]" country="United Kingdom" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34665" lsid="urn:lsid:biocol.org:col:34665" name="Natural History Museum, London" pageId="16" pageNumber="866" type="Museum">NHMUK</collectionCode>
<collectionCode id="2B83229E8040E83B6865FB8F88E52241" box="[1386,1410,1126,1149]" country="Russia" name="Paleontological Institute" pageId="16" pageNumber="866">PI</collectionCode>
<specimenCode id="1D3412208040E83B689FFB8F8EAF22A1" collectionCode="MG" country="China" name="Museum of Zoology" pageId="16" pageNumber="866">MG 15131515</specimenCode>
;
<collectionCode id="2B83229E8040E83B6EDAFB6F895E22A1" box="[981,1081,1158,1181]" country="United Kingdom" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34665" lsid="urn:lsid:biocol.org:col:34665" name="Natural History Museum, London" pageId="16" pageNumber="866" type="Museum">NHMUK</collectionCode>
PE
<specimenCode id="1D3412208040E83B6966FB6F887222A1" box="[1129,1301,1158,1181]" collectionCode="PEI" country="Canada" lsid="urn:lsid:biocol.org:col:12561" name="Agriculture and Agri-Food Canada" pageId="16" pageNumber="866" type="Herbarium">PEI 55195520</specimenCode>
), and
<specimenCount id="5B9471D28040E83B6857FB6F8EE22281" count="14" pageId="16" pageNumber="866" type="generic">14 specimens</specimenCount>
from LD-05 (
<collectionCode id="2B83229E8040E83B6929FB4F89EB2281" box="[1062,1164,1190,1213]" country="United Kingdom" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34665" lsid="urn:lsid:biocol.org:col:34665" name="Natural History Museum, London" pageId="16" pageNumber="866" type="Museum">NHMUK</collectionCode>
<collectionCode id="2B83229E8040E83B6999FB4F89C92281" box="[1174,1198,1190,1213]" country="Russia" name="Paleontological Institute" pageId="16" pageNumber="866">PI</collectionCode>
<specimenCode id="1D3412208040E83B69B7FB4F88412281" box="[1208,1318,1190,1213]" collectionCode="MG" country="China" name="Museum of Zoology" pageId="16" pageNumber="866">MG 1476</specimenCode>
;
<collectionCode id="2B83229E8040E83B683AFB4F88FE2281" box="[1333,1433,1190,1213]" country="United Kingdom" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34665" lsid="urn:lsid:biocol.org:col:34665" name="Natural History Museum, London" pageId="16" pageNumber="866" type="Museum">NHMUK</collectionCode>
<collectionCode id="2B83229E8040E83B68ACFB4F88DC2281" box="[1443,1467,1190,1213]" country="Russia" name="Paleontological Institute" pageId="16" pageNumber="866">PI</collectionCode>
<specimenCode id="1D3412208040E83B6E42FB2F8ED022E1" box="[845,951,1222,1245]" collectionCode="MG" country="China" name="Museum of Zoology" pageId="16" pageNumber="866">MG 1482</specimenCode>
;
<collectionCode id="2B83229E8040E83B6ECDFB2F894122E1" box="[962,1062,1222,1245]" country="United Kingdom" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34665" lsid="urn:lsid:biocol.org:col:34665" name="Natural History Museum, London" pageId="16" pageNumber="866" type="Museum">NHMUK</collectionCode>
<collectionCode id="2B83229E8040E83B6921FB2F892122E1" box="[1070,1094,1222,1245]" country="Russia" name="Paleontological Institute" pageId="16" pageNumber="866">PI</collectionCode>
<specimenCode id="1D3412208040E83B6943FB2F89D122E1" box="[1100,1206,1222,1245]" collectionCode="MG" country="China" name="Museum of Zoology" pageId="16" pageNumber="866">MG 1484</specimenCode>
;
<collectionCode id="2B83229E8040E83B69CDFB2F884122E1" box="[1218,1318,1222,1245]" country="United Kingdom" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34665" lsid="urn:lsid:biocol.org:col:34665" name="Natural History Museum, London" pageId="16" pageNumber="866" type="Museum">NHMUK</collectionCode>
<collectionCode id="2B83229E8040E83B6822FB2F882222E1" box="[1325,1349,1222,1245]" country="Russia" name="Paleontological Institute" pageId="16" pageNumber="866">PI</collectionCode>
<specimenCode id="1D3412208040E83B6843FB2F88D122E1" box="[1356,1462,1222,1245]" collectionCode="MG" country="China" name="Museum of Zoology" pageId="16" pageNumber="866">MG 1493</specimenCode>
;
<collectionCode id="2B83229E8040E83B6E42FB0F8ED622C1" box="[845,945,1254,1277]" country="United Kingdom" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34665" lsid="urn:lsid:biocol.org:col:34665" name="Natural History Museum, London" pageId="16" pageNumber="866" type="Museum">NHMUK</collectionCode>
<collectionCode id="2B83229E8040E83B6EB6FB0F8EB622C1" box="[953,977,1254,1277]" country="Russia" name="Paleontological Institute" pageId="16" pageNumber="866">PI</collectionCode>
<specimenCode id="1D3412208040E83B6ED7FB0F892422C1" box="[984,1091,1254,1277]" collectionCode="MG" country="China" name="Museum of Zoology" pageId="16" pageNumber="866">MG 1530</specimenCode>
;
<collectionCode id="2B83229E8040E83B6940FB0F89D422C1" box="[1103,1203,1254,1277]" country="United Kingdom" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34665" lsid="urn:lsid:biocol.org:col:34665" name="Natural History Museum, London" pageId="16" pageNumber="866" type="Museum">NHMUK</collectionCode>
PE PEI 5493;
<collectionCode id="2B83229E8040E83B6859FB0F88DD22C1" box="[1366,1466,1254,1277]" country="United Kingdom" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34665" lsid="urn:lsid:biocol.org:col:34665" name="Natural History Museum, London" pageId="16" pageNumber="866" type="Museum">NHMUK</collectionCode>
PE PEI 5502;
<collectionCode id="2B83229E8040E83B6EE5FAEF89292321" box="[1002,1102,1286,1309]" country="United Kingdom" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34665" lsid="urn:lsid:biocol.org:col:34665" name="Natural History Museum, London" pageId="16" pageNumber="866" type="Museum">NHMUK</collectionCode>
PE PEI 5514).
<specimenCount id="5B9471D28040E83B69F2FAEF88DD2321" box="[1277,1466,1286,1309]" count="14" pageId="16" pageNumber="866" type="juvenile">Fourteen juvenile</specimenCount>
shells from LD-04 (
<collectionCode id="2B83229E8040E83B6940FACC89D22300" box="[1103,1205,1317,1340]" country="United Kingdom" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34665" lsid="urn:lsid:biocol.org:col:34665" name="Natural History Museum, London" pageId="16" pageNumber="866" type="Museum">NHMUK</collectionCode>
<collectionCode id="2B83229E8040E83B69C3FACC89832300" box="[1228,1252,1317,1340]" country="Russia" name="Paleontological Institute" pageId="16" pageNumber="866">PI</collectionCode>
<specimenCode id="1D3412208040E83B69F5FACC88D12300" box="[1274,1462,1317,1340]" collectionCode="MG" country="China" name="Museum of Zoology" pageId="16" pageNumber="866">MG 15161517</specimenCode>
;
<collectionCode id="2B83229E8040E83B6E42FAAC8ED62360" box="[845,945,1349,1372]" country="United Kingdom" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34665" lsid="urn:lsid:biocol.org:col:34665" name="Natural History Museum, London" pageId="16" pageNumber="866" type="Museum">NHMUK</collectionCode>
<collectionCode id="2B83229E8040E83B6EB8FAAC8EA82360" box="[951,975,1349,1372]" country="Russia" name="Paleontological Institute" pageId="16" pageNumber="866">PI</collectionCode>
<specimenCode id="1D3412208040E83B6EDAFAAC89E62360" box="[981,1153,1349,1372]" collectionCode="MG" country="China" name="Museum of Zoology" pageId="16" pageNumber="866">MG 15191529</specimenCode>
;
<collectionCode id="2B83229E8040E83B6983FAAC89972360" box="[1164,1264,1349,1372]" country="United Kingdom" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34665" lsid="urn:lsid:biocol.org:col:34665" name="Natural History Museum, London" pageId="16" pageNumber="866" type="Museum">NHMUK</collectionCode>
PE PEI 5486)
</materialsCitation>
.
</paragraph>
<paragraph id="4D2DBA5B8040E83B6E42FA968EBA238A" blockId="16.[845,1467,1407,1462]" pageId="16" pageNumber="866">
<emphasis id="7FE666498040E83B6E42FA96895423AA" bold="true" box="[845,1075,1407,1430]" pageId="16" pageNumber="866">Derivation of name.</emphasis>
Latin,
<taxonomicName id="8A92C1D88040E83B6985FA9689BC23AA" authorityName="Foster &amp; Danise &amp; Twitchett" authorityYear="2017" box="[1162,1243,1407,1430]" class="Gastropoda" family="Eotomariidae" genus="Glabrocingulum" kingdom="Animalia" order="Pleurotomariida" pageId="16" pageNumber="866" phylum="Mollusca" rank="species" species="parvum">
<emphasis id="7FE666498040E83B6985FA9689BC23AA" box="[1162,1243,1407,1430]" italics="true" pageId="16" pageNumber="866">parvum</emphasis>
</taxonomicName>
(small), referring to its small size.
</paragraph>
</subSubSection>
<subSubSection id="0588E9D08040E83A6E42FA318F1422ED" lastPageId="17" lastPageNumber="867" pageId="16" pageNumber="866" type="description">
<paragraph id="4D2DBA5B8040E83A6E42FA318F13224D" blockId="16.[845,1467,1496,1934]" lastBlockId="17.[159,781,1082,1233]" lastPageId="17" lastPageNumber="867" pageId="16" pageNumber="866">
<emphasis id="7FE666498040E83B6E42FA318EBF23D3" bold="true" box="[845,984,1496,1519]" pageId="16" pageNumber="866">Description.</emphasis>
Shell is dextral, turbiniform, low-spired, with simple sutures. The upper whorl surface is slightly concave and gently sloping, and bears the selenizone between sharply protruding edges, with the lower of the edges on the shell periphery. Selenizone is concave and moderately deep. Narrow, concave band immediately below the lower rib. Whorl profile below the lower rib is gently convex. Basal angulation is relatively sharply defined, but convex; base with a rounded circum-umbilical shoulder; small umbilical chink. Aperture is a rounded trapezoid; inner lip is reflexed; peristome interrupted by a slit in the outer lip. Shell ornamented with closely, irregular spaced fine spiral lirae. Growth lines visible with small knobs at the intersection of spiral ribs, otherwise no axial ornamentation observed. On the top of the keel, near the suture, the growth lines form small nodules.
</paragraph>
<caption id="19EDEAD38041E83A6D90FC538FFB2238" ID-DOI="http://doi.org/10.5281/zenodo.10883080" ID-Zenodo-Dep="10883080" httpUri="https://zenodo.org/record/10883080/files/figure.png" pageId="17" pageNumber="867" startId="17.[159,227,954,975]" targetBox="[175,1452,183,922]" targetPageId="17" targetType="figure">
<paragraph id="4D2DBA5B8041E83A6D90FC538FFB2238" blockId="17.[159,1467,954,1028]" pageId="17" pageNumber="867">
<emphasis id="7FE666498041E83A6D90FC538C6E25F3" bold="true" box="[159,265,954,975]" pageId="17" pageNumber="867">Figure 11.</emphasis>
<taxonomicName id="8A92C1D88041E83A6C1BFC538F6525F3" authority="Foster &amp; Danise &amp; Twitchett, 2017" authorityName="Foster &amp; Danise &amp; Twitchett" authorityYear="2017" box="[276,514,954,975]" class="Gastropoda" family="Eotomariidae" genus="Glabrocingulum" kingdom="Animalia" order="Pleurotomariida" pageId="17" pageNumber="867" phylum="Mollusca" rank="species" species="parvum" status="sp. nov.">
<emphasis id="7FE666498041E83A6C1BFC538F6525F3" box="[276,514,954,975]" italics="true" pageId="17" pageNumber="867">Glabrocingulum parvum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="64D5DB328041E83A6F06FC538F3025F3" box="[521,599,954,975]" pageId="17" pageNumber="867" rank="species">sp. nov.</taxonomicNameLabel>
<emphasis id="7FE666498041E83A6F52FC538FF625F3" bold="true" box="[605,657,954,975]" pageId="17" pageNumber="867">A, B,</emphasis>
apertural view;
<emphasis id="7FE666498041E83A6E3EFC538E2E25F3" bold="true" box="[817,841,954,975]" pageId="17" pageNumber="867">A,</emphasis>
holotype, NHMUK PI MG 1531;
<emphasis id="7FE666498041E83A6995FC5389C825F3" bold="true" box="[1178,1199,954,975]" pageId="17" pageNumber="867">B,</emphasis>
paratype, NHMUK PI MG 1518;
<emphasis id="7FE666498041E83A6DD2FC3D8C7625D5" bold="true" box="[221,273,980,1001]" pageId="17" pageNumber="867">CE,</emphasis>
NHMUK PI MG 1531;
<emphasis id="7FE666498041E83A6F0CFC3D8F7D25D5" bold="true" box="[515,538,980,1001]" pageId="17" pageNumber="867">C,</emphasis>
lateral view;
<emphasis id="7FE666498041E83A6FADFC3D8FDE25D5" bold="true" box="[674,697,980,1001]" pageId="17" pageNumber="867">D,</emphasis>
side view of initial whorls;
<emphasis id="7FE666498041E83A6EDFFC3D8E8125D5" bold="true" box="[976,998,980,1001]" pageId="17" pageNumber="867">E,</emphasis>
apical view;
<emphasis id="7FE666498041E83A6964FC3D89E725D5" bold="true" box="[1131,1152,980,1001]" pageId="17" pageNumber="867">F,</emphasis>
apertural view of a larval shell, NHMUK PI MG 1520. Scale bars = 1 mm, except F.
</paragraph>
</caption>
<paragraph id="4D2DBA5B8041E83A6DB5FB938F1422ED" blockId="17.[159,781,1082,1233]" pageId="17" pageNumber="867">
Protoconch: openly coiled; first two whorls smooth; third whorl possesses ~15 evenly spaced, rounded, spiral threads; peristome uninterrupted (
<figureCitation id="D5A9A6DE8041E83A6F06FB538F0122ED" box="[521,614,1210,1233]" captionStart="Figure 11" captionStartId="17.[159,227,954,975]" captionTargetBox="[175,1452,183,922]" captionTargetId="figure-390@17.[175,1452,183,922]" captionTargetPageId="17" captionText="Figure 11. Glabrocingulum parvum sp. nov. A, B, apertural view; A, holotype, NHMUK PI MG 1531; B, paratype, NHMUK PI MG 1518; CE, NHMUK PI MG 1531; C, lateral view; D, side view of initial whorls; E, apical view; F, apertural view of a larval shell, NHMUK PI MG 1520. Scale bars = 1 mm, except F." figureDoi="http://doi.org/10.5281/zenodo.10883080" httpUri="https://zenodo.org/record/10883080/files/figure.png" pageId="17" pageNumber="867">Fig. 11F</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="0588E9D08041E83A6D90FAF08EF0203F" pageId="17" pageNumber="867" type="discussion">
<paragraph id="4D2DBA5B8041E83A6D90FAF08C4721B2" blockId="17.[159,782,1305,1934]" pageId="17" pageNumber="867">
<emphasis id="7FE666498041E83A6D90FAF08C69230C" bold="true" box="[159,270,1305,1328]" pageId="17" pageNumber="867">Remarks.</emphasis>
These specimens resemble
<taxonomicName id="8A92C1D88041E83A6F52FAF08CEF236C" authority="Batten, 1989" authorityName="Batten" authorityYear="1989" class="Gastropoda" family="Eotomariidae" genus="Glabrocingulum" kingdom="Animalia" order="Pleurotomariida" pageId="17" pageNumber="867" phylum="Mollusca" rank="species" species="texanum">
<emphasis id="7FE666498041E83A6F52FAF08D9E236C" italics="true" pageId="17" pageNumber="867">Glabrocingulum texanum</emphasis>
<bibRefCitation id="2903C7AA8041E83A6C0FFAD08CEF236C" author="Batten, R. L." box="[256,392,1337,1360]" pageId="17" pageNumber="867" pagination="1 - 64" refId="ref15999" refString="Batten, R. L. 1989. Permian gastropods of the southwestern United States. 7. Pleurotomariacea: Eotomariidae, Lophospiridae, Gosseletinidae. American Museums Novitates, 2958, 1 - 64." type="journal article" year="1989">Batten, 1989</bibRefCitation>
</taxonomicName>
with the selenizone being located in the upper third of the whorl and lacking axial ornamentation. They differ from
<taxonomicName id="8A92C1D88041E83A6CABFA908F4423AC" authorityName="Batten" authorityYear="1989" box="[420,547,1401,1424]" class="Gastropoda" family="Eotomariidae" genus="Glabrocingulum" kingdom="Animalia" order="Pleurotomariida" pageId="17" pageNumber="867" phylum="Mollusca" rank="species" species="texanum">
<emphasis id="7FE666498041E83A6CABFA908F4423AC" box="[420,547,1401,1424]" italics="true" pageId="17" pageNumber="867">G. texanum</emphasis>
</taxonomicName>
in having a broader selenizone in relation to whorl height; a more concave selenizone with sharper edges; a weakly developed funicle or none at all; and in being moderately low-spired. The uncoiling that has been described for some
<taxonomicName id="8A92C1D88041E83A6FBBFA118DAA2013" authorityName="Batten" authorityYear="1989" class="Gastropoda" family="Eotomariidae" genus="Glabrocingulum" kingdom="Animalia" order="Pleurotomariida" pageId="17" pageNumber="867" phylum="Mollusca" rank="species" species="texanum">
<emphasis id="7FE666498041E83A6FBBFA118DAA2013" italics="true" pageId="17" pageNumber="867">G. texanum</emphasis>
</taxonomicName>
specimens from the Permian of the south-western
<collectingCountry id="3585FACB8041E83A6FE4F9F18E6A2013" box="[747,781,1560,1583]" name="United States of America" pageId="17" pageNumber="867">US</collectingCountry>
(
<bibRefCitation id="2903C7AA8041E83A6DA8F9D18C4D2073" author="Batten, R. L." box="[167,298,1592,1615]" pageId="17" pageNumber="867" pagination="1 - 64" refId="ref15999" refString="Batten, R. L. 1989. Permian gastropods of the southwestern United States. 7. Pleurotomariacea: Eotomariidae, Lophospiridae, Gosseletinidae. American Museums Novitates, 2958, 1 - 64." type="journal article" year="1989">Batten 1989</bibRefCitation>
) was not observed. These specimens are also considerably smaller (max. size: H = 3.6 mm, W = 4.6 mm) than the
<typeStatus id="922904F98041E83A6C6FF9918CE920B3" box="[352,398,1656,1679]" pageId="17" pageNumber="867">type</typeStatus>
material of
<taxonomicName id="8A92C1D88041E83A6F1CF9918FE820B3" authorityName="Batten" authorityYear="1989" box="[531,655,1656,1679]" class="Gastropoda" family="Eotomariidae" genus="Glabrocingulum" kingdom="Animalia" order="Pleurotomariida" pageId="17" pageNumber="867" phylum="Mollusca" rank="species" species="texanum">
<emphasis id="7FE666498041E83A6F1CF9918FE820B3" box="[531,655,1656,1679]" italics="true" pageId="17" pageNumber="867">G. texanum</emphasis>
</taxonomicName>
(max. size: H = 8.7 mm, W = 9.9 mm), which may be a consequence of environmental stress in the immediate aftermath of an extinction event and an expression of the Lilliput effect in this genus (cf. Twitchett 2007). Due to their excellent preservation, these specimens reveal the morphology of the larval stages, which show a similar ontogenetic development to other species of
<taxonomicName id="8A92C1D88041E83A6CDDF8BE8FE52152" authorityName="Thomas" authorityYear="1940" box="[466,642,1879,1902]" class="Gastropoda" family="Eotomariidae" genus="Glabrocingulum" kingdom="Animalia" order="Pleurotomariida" pageId="17" pageNumber="867" phylum="Mollusca" rank="genus">
<emphasis id="7FE666498041E83A6CDDF8BE8FE52152" box="[466,642,1879,1902]" italics="true" pageId="17" pageNumber="867">Glabrocingulum</emphasis>
</taxonomicName>
(e.g. Pan &amp; Shen 2008).
</paragraph>
<paragraph id="4D2DBA5B8041E83A6E68FBD3890D238C" blockId="17.[845,1467,1082,1456]" pageId="17" pageNumber="867">
The
<taxonomicName id="8A92C1D88041E83A6E97FBD3895C226D" authorityName="Salvini-Plawen" authorityYear="1980" box="[920,1083,1082,1105]" order="Vetigastropoda" pageId="17" pageNumber="866" rank="order">Vetigastropoda</taxonomicName>
have a diverse range of living habits including being described in association with woodfall communities (
<bibRefCitation id="2903C7AA8041E83A691FFB9389DD22AD" author="Kiel, S. &amp; Amano, K. &amp; Jenkins, R. G." box="[1040,1210,1146,1169]" pageId="17" pageNumber="867" pagination="525 - 537" refId="ref19168" refString="Kiel, S., Amano, K. &amp; Jenkins, R. G. 2008. Bivalves from Cretaceous cold-seep deposits on Hokkaido, Japan. Acta Palaeontologica Polonica, 53, 525 - 537." type="journal article" year="2008">
Kiel
<emphasis id="7FE666498041E83A6948FB93891922AD" box="[1095,1150,1146,1169]" italics="true" pageId="17" pageNumber="867">et al.</emphasis>
2008
</bibRefCitation>
). The specimens in this study do occur in association with wood; however, no direct relationship was observed.
<taxonomicName id="8A92C1D88041E83A69CDFB53883522ED" authorityName="Wenz" authorityYear="1938" box="[1218,1362,1210,1233]" class="Gastropoda" family="Eotomariidae" kingdom="Animalia" order="Pleurotomariida" pageId="17" pageNumber="867" phylum="Mollusca" rank="family">Eotomariidae</taxonomicName>
recorded from Zechstein reefs are described as motile algal grazers that were probably confined to a hard substrate (
<bibRefCitation id="2903C7AA8041E83A6850FB108933230C" author="Hollingworth, N. &amp; Pettigrew, T." pageId="17" pageNumber="867" pagination="1 - 72" refId="ref18724" refString="Hollingworth, N. &amp; Pettigrew, T. 1988. Zechstein reef fossils and their palaeoecology. The Palaeontological Association Field Guides to Fossils, 3, 1 - 72." type="journal article" year="1988">Hollingworth &amp; Pettigrew 1988</bibRefCitation>
). The lack of evidence of a hard substrate in their depositional environment, however, suggests that these specimens probably had a similar life habit to deep-sea vetigastropods that typically consume sediment (
<bibRefCitation id="2903C7AA8041E83A6EB4FA70893D238C" author="Hickman, C. S." box="[955,1114,1433,1456]" pageId="17" pageNumber="867" pagination="17 - 34" refId="ref18393" refString="Hickman, C. S. 1988. Archaeogastropod evolution, phylogeny and systematics: a re-evaluation. Malacological Review, 4, 17 - 34." type="journal article" year="1988">Hickman 1988</bibRefCitation>
).
</paragraph>
<paragraph id="4D2DBA5B8041E83A6E42FA258EF0203F" blockId="17.[845,1466,1484,1539]" pageId="17" pageNumber="867">
<emphasis id="7FE666498041E83A6E42FA258EBC23DF" bold="true" box="[845,987,1484,1507]" pageId="17" pageNumber="867">Mode of life.</emphasis>
Surficial, fully motile, slow, surface deposit feeder.
</paragraph>
</subSubSection>
</treatment>
</document>