305 lines
40 KiB
XML
305 lines
40 KiB
XML
<document id="393B7224A0102177B2BB6DDAF4E511ED" ID-CLB-Dataset="4900" ID-DOI="10.11646/zootaxa.3859.1.1" ID-GBIF-Dataset="d866af6f-cbcd-47f4-a4f3-1499c1789ae3" ID-ISSN="1175-5326" ID-Zenodo-Dep="4930112" ID-ZooBank="24FCAAE1-AB7C-4FAD-8698-D0C9F12400EC" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1623442093486" checkinUser="felipe" docAuthor="Hryniewicz, Krzysztof, Little, Crispin T. S. & Nakrem, Hans Arne" docDate="2014" docId="A2311D4D9F16E33704E6FB78FC462BD6" docLanguage="en" docName="zt03859p066.pdf" docOrigin="Zootaxa 3859 (1)" docStyle="DocumentStyle:5EBBA59367AD13919D70D935FA04F6A3.14:Zootaxa.2013-.monograph" docStyleId="5EBBA59367AD13919D70D935FA04F6A3" docStyleName="Zootaxa.2013-.monograph" docStyleVersion="14" docTitle="Mesosaccella rogovi Hryniewicz & Little & Nakrem 2014, sp. nov." docType="treatment" docVersion="12" lastPageNumber="19" masterDocId="5E0865359F19E3250471FFA5FFA82955" masterDocTitle="Bivalves from the latest Jurassic-earliest Cretaceous hydrocarbon seep carbonates from central Spitsbergen, Svalbard" masterLastPageNumber="66" masterPageNumber="1" pageNumber="16" updateTime="1699013068164" updateUser="ExternalLinkService">
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<mods:title id="5BE20AD587E49BD94D1D5FE565AFBCA6">Bivalves from the latest Jurassic-earliest Cretaceous hydrocarbon seep carbonates from central Spitsbergen, Svalbard</mods:title>
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<mods:name id="5776342AA996AFF9C84D4BF260FBB938" type="personal">
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<mods:roleTerm id="1DFCFD924F155A14A96FF6B856B6AAD8">Author</mods:roleTerm>
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<mods:namePart id="F8B7470352C26F7AD2C27C2A4AB25200">Hryniewicz, Krzysztof</mods:namePart>
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<mods:nameIdentifier id="0438FC0428145409EDE4270C0F16D376" type="email">krzysztof.hryniewicz@nhm.uio.no</mods:nameIdentifier>
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<mods:roleTerm id="DC34093F087925A70508FFA46953D41B">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="2D7D29432E2F8E128BAC2896F7DA8C64">Little, Crispin T. S.</mods:namePart>
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<mods:nameIdentifier id="3D7961B423F4EC58858F21925D1D2A0E" type="email">earctsl@leeds.ac.uk</mods:nameIdentifier>
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<mods:roleTerm id="EF657134A80CEF109147A3ADD10B852F">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="319172ED02C48A97B5F73EFB34A3FA1C">Nakrem, Hans Arne</mods:namePart>
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<mods:nameIdentifier id="10D6A2D35E6C4B58F38214E528DFF7E8" type="email">krzysztof.hryniewicz@nhm.uio.no</mods:nameIdentifier>
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<mods:typeOfResource id="80F648D2BA8C5F3178519FBD6F6E1707">text</mods:typeOfResource>
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<mods:title id="FF331058D719EA9E50EAC9A6B2D28435">Zootaxa</mods:title>
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<mods:part id="E924AB585464CF1848DCC48A7519873C">
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<mods:date id="DD14B31C141B19C1D0567834403EC601">2014</mods:date>
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<mods:number id="A277BB0621A814471396D6CCFB80276B">2014-09-02</mods:number>
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<mods:detail id="FCE429CA533D9BC6D971E0AC6F3D525D" type="volume">
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<mods:number id="926B83F3DB279F41C89F2EFF19362EA2">3859</mods:number>
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<mods:number id="3AFADC9163E2E99384AF96E6E9A14999">1</mods:number>
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<mods:classification id="7E63C093907F632BE1D143EDB6D28B24">journal article</mods:classification>
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<mods:identifier id="EB53DC98D08F469615DD29370D151DE2" type="DOI">10.11646/zootaxa.3859.1.1</mods:identifier>
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<mods:identifier id="719402E01A2EE68CB742C112471D4A04" type="GBIF-Dataset">d866af6f-cbcd-47f4-a4f3-1499c1789ae3</mods:identifier>
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<treatment id="A2311D4D9F16E33704E6FB78FC462BD6" ID-DOI="http://doi.org/10.5281/zenodo.4929773" ID-GBIF-Taxon="184646048" ID-Zenodo-Dep="4929773" LSID="urn:lsid:plazi:treatment:A2311D4D9F16E33704E6FB78FC462BD6" httpUri="http://treatment.plazi.org/id/A2311D4D9F16E33704E6FB78FC462BD6" lastPageId="18" lastPageNumber="19" pageId="15" pageNumber="16">
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<subSubSection id="6282FFD09F16E32A04E6FB78FE582DA2" box="[151,496,1245,1271]" pageId="15" pageNumber="16" type="nomenclature">
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<paragraph id="2A27AC5B9F16E32A04E6FB78FE582DA2" blockId="15.[151,496,1245,1304]" box="[151,496,1245,1271]" pageId="15" pageNumber="16">
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<heading id="716F1B379F16E32A04E6FB78FE582DA2" bold="true" box="[151,496,1245,1271]" fontSize="11" level="2" pageId="15" pageNumber="16" reason="4">
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<emphasis id="18EC70499F16E32A04E6FB78FE582DA2" bold="true" box="[151,496,1245,1271]" pageId="15" pageNumber="16">
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<taxonomicName id="ED98D7D89F16E32A04E6FB78FE232DA2" authority="Hryniewicz & Little & Nakrem, 2014" authorityName="Hryniewicz & Little & Nakrem" authorityYear="2014" box="[151,395,1245,1271]" class="Bivalvia" family="Malletiidae" genus="Mesosaccella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Nuculanida" pageId="15" pageNumber="16" phylum="Mollusca" rank="species" species="rogovi" status="sp. nov.">
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<emphasis id="18EC70499F16E32A04E6FB78FE232DA2" bold="true" box="[151,395,1245,1271]" italics="true" pageId="15" pageNumber="16">Mesosaccella rogovi</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="03DFCD329F16E32A05E2FB78FE582DA2" box="[403,496,1245,1271]" pageId="15" pageNumber="16" rank="species">sp. nov.</taxonomicNameLabel>
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</emphasis>
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</heading>
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</paragraph>
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</subSubSection>
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<subSubSection id="6282FFD09F16E32A04E6FB5AFD682C02" pageId="15" pageNumber="16" type="description">
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<paragraph id="2A27AC5B9F16E32A04E6FB5AFE352C4D" blockId="15.[151,496,1245,1304]" box="[151,413,1279,1304]" pageId="15" pageNumber="16">
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(
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<figureCitation id="B2A3B0DE9F16E32A04EFFB5AFEE82C42" box="[158,320,1279,1304]" captionStart="FIGURE 5" captionStartId="14.[151,250,1494,1516]" captionTargetId="figure-22@13.[171,1409,195,1969]" captionTargetPageId="13" captionText="FIGURE 5. (A–N) Nucinella svalbardensis sp. nov. (A–D) Lateral views of holotype showing shape of the articulated internal mould, anterior adductor muscle scar and possible anterior pedal retractor scar, rounded posterior margin and fine radial striations on internal mould surface. (E) Dorsal view showing weakly opisthogyrate umbo and deep ligament pit on the posterodorsal margin. (F) Anterior view showing anterior adductor muscle scar projecting weakly beyond pallial line. (G) Lateral view showing commarginal ornament on external shell surface. (H–I) Dorsal view of partially articulated specimen showing length of the cardinal teeth and relation of the possible ligament to the cardinal dentition. (J–K) Lateral view of the cardinal part of the hinge plate showing arrangement and shape of the cardinal teeth. (L) Ventral view of silicone rubber cast of the dorsal margin of articulated internal mould showing sabre-shaped lateral teeth and interlocked cardinal teeth. (M–N) Silicone rubber casts of right valve internal moulds showing two lateral teeth. (O–Q) Dacromya chetaensis Sanin, 1976. (O–P) Lateral and dorsal views showing shape of internal mould, taxodont dentition, anterior and posterior adductor muscle scars. (Q) Posterodorsal shell margin showing weak growth lines. (R–T) Mesosaccella rogovi sp. nov. (R) Lateral view of holotype left valve shell surface showing characteristic growth-line deflections around the posterior margin and carina subparallel to the dorsal margin. (S–T) Lateral view of left valve internal mould showing anterior adductor muscle scar, weak posterior adductor muscle scar and pallial line. (A–F) PMO 217.171, (G) PMO 224.978, (H–I) PMO 225.042, (J–K) PMO 224.981, (L–M) PMO 217.217, (N) PMO 225.020, (O–P) PMO 217.581, (Q) PMO 226.600, (R) PMO 224.971, (S–T) PMO 217.229. Scale bars 5 mm." figureDoi="http://doi.org/10.5281/zenodo.5228091" httpUri="https://zenodo.org/record/5228091/files/figure.png" pageId="15" pageNumber="16">Figures 5 R–T</figureCitation>
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,
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<figureCitation id="B2A3B0DE9F16E32A053FFAA5FE3E2C4D" box="[334,406,1279,1304]" captionStart="FIGURE 7" captionStartId="18.[151,250,1518,1540]" captionTargetId="figure-22@17.[168,1425,193,1978]" captionTargetPageId="17" captionText="FIGURE 7. (A–F) Mesosaccella rogovi sp. nov. (A–B) Lateral view of a internal mould showing pallial line. Fragment of the shell shows concentric growth lines. (C) Dorsal view of specimen with partially preserved shell showing weak carina, escutcheon, unidentified muscle scars and ridges formed by growth line deflections. (D–E) Lateral view of right valve internal mould showing weak posterior adductor muscle scar and weak pallial line with very shallow pallial sinus. (F) Internal view of the right valve showing anterior and posterior dental rows and cardinal dentition. (G–P) Mesosaccella toddi sp. nov. (G–K) Left valve lateral views of articulated specimens. (J) Details of external ornament showing characteristic commarginal ridges and rosette-shaped ornament in interridge spaces (arrowed). (K) Holotype showing strong posterior carinae. (L–M) Anterior and posterior views of holotype. Note three carinae and escutcheon visible in the posterior view. (N) Dorsal view of holotype showing three carinae and their relation to wide and shallow escutcheon. (O) Internal view of the dorsal margin of articulated specimen showing cardinal-most teeth and unidentified muscle scars. (P) Lateral view of right valve internal mould showing relatively strong, circular anterior adductor muscle scar and elongated posterior adductor muscle scar, as well as strong pallial line with shallow pallial sinus. (A–E) PMO 217.371, (F) PMO 217.539, (G) PMO 217.609, (H) PMO 217.610, (I–J) PMO 217.616, (K–N) PMO 224.861, (O) PMO 225.031, (P) PMO 224.862. Scale bars 5 mm (A–F, K–P), 2 mm (G–I)." figureDoi="http://doi.org/10.5281/zenodo.5228095" httpUri="https://zenodo.org/record/5228095/files/figure.png" pageId="15" pageNumber="16">7 A–F</figureCitation>
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)
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</paragraph>
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<paragraph id="2A27AC5B9F16E32A04E6FAE4FD682C02" blockId="15.[151,704,1345,1367]" box="[151,704,1345,1367]" pageId="15" pageNumber="16">
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2011 Malletiid sp. 1—Hammer
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<emphasis id="18EC70499F16E32A05ABFAE7FDAF2C02" box="[474,519,1345,1367]" italics="true" pageId="15" pageNumber="16">et al</emphasis>
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., fig. 7n–o, tab. 2.
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</paragraph>
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</subSubSection>
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<subSubSection id="6282FFD09F16E32A04E6FAD8FAD42CC3" box="[151,1404,1405,1430]" pageId="15" pageNumber="16" type="etymology">
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<paragraph id="2A27AC5B9F16E32A04E6FAD8FAD42CC3" blockId="15.[151,1436,1405,2006]" box="[151,1404,1405,1430]" pageId="15" pageNumber="16">
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<emphasis id="18EC70499F16E32A04E6FAD8FEB62CC3" bold="true" box="[151,286,1405,1430]" pageId="15" pageNumber="16">Etymology.</emphasis>
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After Mikhail A. Rogov, Russian palaeontologist specializing in Jurassic stratigraphy of the Arctic.
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</paragraph>
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</subSubSection>
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<subSubSection id="6282FFD09F16E32A04B4FA04FD4D2F8F" pageId="15" pageNumber="16" type="materials_examined">
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<paragraph id="2A27AC5B9F16E32A04B4FA04FBFB2CEF" blockId="15.[151,1436,1405,2006]" box="[197,1107,1441,1466]" pageId="15" pageNumber="16">
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<emphasis id="18EC70499F16E32A04B4FA04FECB2CEF" bold="true" box="[197,355,1441,1466]" pageId="15" pageNumber="16">
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<typeStatus id="F52312F99F16E32A04B4FA04FEA82CEF" box="[197,256,1441,1466]" pageId="15" pageNumber="16">Type</typeStatus>
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locality.
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</emphasis>
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Seep 9, Knorringfjellet, Spitsbergen,
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<geoCoordinate id="4FACCA9C9F16E32A077AFA04FC012CEF" box="[779,937,1441,1466]" degrees="78" direction="north" minutes="18" orientation="latitude" pageId="15" pageNumber="16" precision="1" seconds="49.9" value="78.313866">78°18’49.9”N</geoCoordinate>
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<geoCoordinate id="4FACCA9C9F16E32A07C1FA04FBE72CEF" box="[944,1103,1441,1466]" degrees="16" direction="east" minutes="10" orientation="longitude" pageId="15" pageNumber="16" precision="1" seconds="58.9" value="16.183027">16°10’58.9”E</geoCoordinate>
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.
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</paragraph>
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<paragraph id="2A27AC5B9F16E32A04B4FA60FAAB2FC4" blockId="15.[151,1436,1405,2006]" pageId="15" pageNumber="16">
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<emphasis id="18EC70499F16E32A04B4FA60FEDF2C8B" bold="true" box="[197,375,1477,1502]" pageId="15" pageNumber="16">Type material.</emphasis>
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<materialsCitation id="9AF0A6069F16E32A05F0FA60FD8F2F57" ID-GBIF-Occurrence="3336546303" collectionCode="PMO" pageId="15" pageNumber="16" specimenCode="PMO 224.971" specimenCount="1" typeStatus="holotype">
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<typeStatus id="F52312F99F16E32A05F0FA60FE462C8B" box="[385,494,1477,1502]" pageId="15" pageNumber="16" type="holotype">Holotype</typeStatus>
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:
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<specimenCode id="7A3E04209F16E32A058DFA60FD0A2C8B" box="[508,674,1477,1502]" collectionCode="PMO" pageId="15" pageNumber="16">PMO 224.971</specimenCode>
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; a well preserved left valve showing the shape and characteristic ornament of posterodorsal margin
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</materialsCitation>
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.
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<materialsCitation id="9AF0A6069F16E32A0649FA4FFB372F73" ID-GBIF-Occurrence="3336546301" collectionCode="PMO" pageId="15" pageNumber="16" specimenCode="PMO 217.229" specimenCount="1" typeStatus="paratype">
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<typeStatus id="F52312F99F16E32A0649FA4FFD012F57" box="[568,681,1514,1538]" pageId="15" pageNumber="16" type="paratype">Paratypes</typeStatus>
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:
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<specimenCode id="7A3E04209F16E32A06C8FA4CFCCA2F57" box="[697,866,1513,1538]" collectionCode="PMO" pageId="15" pageNumber="16">PMO 217.229</specimenCode>
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; a partially preserved articulated internal mould showing anterior adductor muscle scar, posterior adductor muscle scar and weak pallial line
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</materialsCitation>
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.
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<materialsCitation id="9AF0A6069F16E32A00DBF9A8FEE82FC7" ID-GBIF-Occurrence="3336546304" collectionCode="PMO" pageId="15" pageNumber="16" specimenCode="PMO 217.371" specimenCount="1" typeStatus="paratype">
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<specimenCode id="7A3E04209F16E32A00DBF9A8FAE52F73" box="[1194,1357,1549,1574]" collectionCode="PMO" pageId="15" pageNumber="16">PMO 217.371</specimenCode>
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; a well preserved articulated internal mould with fragments of shell, which shows weak ridges formed by growth line deflections, a carina and lancet-shaped escutcheon; the mould shows the pallial line and weak imprints of the external ridges
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</materialsCitation>
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.
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<materialsCitation id="9AF0A6069F16E32A053BF9DCFB572FC4" ID-GBIF-Occurrence="3336546316" box="[330,1279,1657,1682]" collectionCode="PMO" pageId="15" pageNumber="16" specimenCode="PMO 217.539" specimenCount="1" typeStatus="paratype">
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<specimenCode id="7A3E04209F16E32A053BF9DCFE452FC7" box="[330,493,1657,1682]" collectionCode="PMO" pageId="15" pageNumber="16">PMO 217.539</specimenCode>
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; a partial right valve with cardinal area showing continuous tooth row
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</materialsCitation>
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.
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</paragraph>
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<paragraph id="2A27AC5B9F16E32A04B4F938FD4D2F8F" blockId="15.[151,1436,1405,2006]" pageId="15" pageNumber="16">
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<emphasis id="18EC70499F16E32A04B4F938FE1A2FE3" bold="true" box="[197,434,1693,1718]" pageId="15" pageNumber="16">Material examined.</emphasis>
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<specimenCount id="3C9E67D29F16E32A05CCF938FDF42FE3" box="[445,604,1693,1718]" pageId="15" pageNumber="16" type="generic">89 specimens</specimenCount>
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, mostly articulated valves or internal moulds with portions of the shell remaining. See Appendix 1 for the list of specimens.
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</paragraph>
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</subSubSection>
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<subSubSection id="6282FFD09F16E32A04B4F940FB3D2E13" pageId="15" pageNumber="16" type="diagnosis">
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<paragraph id="2A27AC5B9F16E32A04B4F940FB3D2E13" blockId="15.[151,1436,1405,2006]" pageId="15" pageNumber="16">
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<emphasis id="18EC70499F16E32A04B4F940FE972FAB" bold="true" box="[197,319,1765,1790]" pageId="15" pageNumber="16">Diagnosis.</emphasis>
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Elongated, lancet-shaped species with posterior part more than four times the length of the anterior part. Up to three weak posterior ridges formed by growth line deflections on the posterior part of the shell. A carina subparallel to the posterodorsal margin runs from the umbo to the posterior shell extremity.
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</paragraph>
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</subSubSection>
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<subSubSection id="6282FFD09F16E33504B4F8F4FDA22BFD" lastPageId="16" lastPageNumber="17" pageId="15" pageNumber="16" type="description">
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<paragraph id="2A27AC5B9F16E32A04B4F8F4FE902EDB" blockId="15.[151,1436,1405,2006]" pageId="15" pageNumber="16">
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<emphasis id="18EC70499F16E32A04B4F8F4FEFF2E3F" bold="true" box="[197,343,1873,1898]" pageId="15" pageNumber="16">Dimensions.</emphasis>
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<quantity id="ED6001BE9F16E32A052CF8F4FE742E3C" box="[349,476,1873,1898]" metricMagnitude="-2" metricUnit="m" metricValue="1.325" metricValueMax="2.3" metricValueMin="0.35" pageId="15" pageNumber="16" unit="mm" value="13.25" valueMax="23.0" valueMin="3.5">3.5–23 mm</quantity>
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in length,
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<quantity id="ED6001BE9F16E32A0623F8F4FD702E3C" box="[594,728,1873,1898]" metricMagnitude="-3" metricUnit="m" metricValue="5.1499999999999995" metricValueMax="9.1" metricValueMin="1.2" pageId="15" pageNumber="16" unit="mm" value="5.1499999999999995" valueMax="9.1" valueMin="1.2">1.2–9.1 mm</quantity>
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in height,
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||
<quantity id="ED6001BE9F16E32A073FF8F4FC682E3C" box="[846,960,1873,1898]" metricMagnitude="-3" metricUnit="m" metricValue="4.6" metricValueMax="8.2" metricValueMin="1.0" pageId="15" pageNumber="16" unit="mm" value="4.6" valueMax="8.2" valueMin="1.0">1–8.2 mm</quantity>
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||
in width. See
|
||
<figureCitation id="B2A3B0DE9F16E32A002FF8F4FB512E3F" box="[1118,1273,1873,1898]" captionStart="FIGURE 8" captionStartId="19.[151,250,1420,1442]" captionTargetBox="[161,1386,224,1384]" captionTargetId="figure-265@19.[150,1436,193,1399]" captionTargetPageId="19" captionText="FIGURE 8. Measurements of Mesosaccella rogovi sp. nov. (in mm). (A) Height to length. (B) Width to length. (C) Width to height. (D) Posterior length to length." figureDoi="http://doi.org/10.5281/zenodo.4930124" httpUri="https://zenodo.org/record/4930124/files/figure.png" pageId="15" pageNumber="16">Figure 8 A–D</figureCitation>
|
||
and Appendix 2D for details.
|
||
</paragraph>
|
||
<paragraph id="2A27AC5B9F16E33504B4F83CFDA22BFD" blockId="15.[151,1436,1405,2006]" lastBlockId="16.[151,1437,151,824]" lastPageId="16" lastPageNumber="17" pageId="15" pageNumber="16">
|
||
<emphasis id="18EC70499F16E32A04B4F83CFEE72EE7" bold="true" box="[197,335,1945,1970]" pageId="15" pageNumber="16">Description</emphasis>
|
||
. Medium to large, up to
|
||
<quantity id="ED6001BE9F16E32A060DF83CFD672EE4" box="[636,719,1945,1970]" metricMagnitude="-2" metricUnit="m" metricValue="2.3" pageId="15" pageNumber="16" unit="mm" value="23.0">23 mm</quantity>
|
||
long,
|
||
<quantity id="ED6001BE9F16E32A076CF83CFCDE2EE4" box="[797,886,1945,1970]" metricMagnitude="-3" metricUnit="m" metricValue="9.1" pageId="15" pageNumber="16" unit="mm" value="9.1">9.1 mm</quantity>
|
||
high and
|
||
<quantity id="ED6001BE9F16E32A0780F83CFBE22EE4" box="[1009,1098,1945,1970]" metricMagnitude="-3" metricUnit="m" metricValue="8.2" pageId="15" pageNumber="16" unit="mm" value="8.2">8.2 mm</quantity>
|
||
wide, elongated (H/L≈0.42), lancet-shaped, weakly inflated (W/L≈0.32, W/H≈0.77); greatest height and width around medial plane. Elongated shape especially well expressed in posterior part, which occupies around 80% of total length (Pl/L≈0.79). Shell shape parameters remain relatively constant throughout ontogeny. External ornament of narrowly-spaced, commarginal growth lines, strongest in median part of shell and weaker towards both anterior and posterior. Towards posterior, disappearance of concentric ridges marked by up to three closely spaced ridges composed of series of growth line deflections. A single carina runs subparallel to posterodorsal margin. Escutcheon shallow, pointed anteriorly, presumably lancet-shaped. Anterodorsal margin straight to weakly convex, without well demarcated lunule. Anterior margin rounded to blunt. Anteroventral margin rounded, passing into weakly rounded ventral margin. Ventral margin passes into weakly convex posteroventral margin. Posterior end pointed, dorsally sloping and passing into long, posterodorsal margin; parallel to dorsal carina. Beaks prosogyrate. Dentition taxodont, teeth orthomorphodont. Anterior and posterior teeth rows meet below umbo. Posterior teeth much smaller than anterior teeth. Specimen
|
||
<quantity id="ED6001BE9F09E3350639FE5AFD312B42" box="[584,665,511,536]" metricMagnitude="-2" metricUnit="m" metricValue="2.0" pageId="16" pageNumber="17" unit="mm" value="20.0">20 mm</quantity>
|
||
long has up to 38 teeth in posterior row and
|
||
<emphasis id="18EC70499F09E33500D3FDA4FB6B2B4D" box="[1186,1219,513,536]" italics="true" pageId="16" pageNumber="17">ca.</emphasis>
|
||
11 teeth in anterior row. Anterior adductor muscle scar small, rounded. Posterior adductor muscle scar elongated, more impressed anteriorly, progressively fading towards posterior. In some specimens weak elongated muscle scars of uncertain origin visible along dorsal margin. Pallial line weakly impressed, parallel to commissure; pallial sinus very shallow to absent, and weakly impressed.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="6282FFD09F09E33704B6FD11FC462BD6" lastPageId="18" lastPageNumber="19" pageId="16" pageNumber="17" type="discussion">
|
||
<paragraph id="2A27AC5B9F09E33704B6FD11FACB2815" blockId="16.[151,1437,151,824]" lastBlockId="18.[151,1436,151,645]" lastPageId="18" lastPageNumber="19" pageId="16" pageNumber="17">
|
||
<emphasis id="18EC70499F09E33504B6FD11FE932B98" bold="true" box="[199,315,692,717]" pageId="16" pageNumber="17">Remarks.</emphasis>
|
||
<taxonomicName id="ED98D7D89F09E3350534FD11FD982B99" authorityName="Hryniewicz & Little & Nakrem" authorityYear="2014" box="[325,560,692,717]" class="Bivalvia" family="Malletiidae" genus="Mesosaccella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Nuculanida" pageId="16" pageNumber="17" phylum="Mollusca" rank="species" species="rogovi">
|
||
<emphasis id="18EC70499F09E3350534FD11FD982B99" box="[325,560,692,717]" italics="true" pageId="16" pageNumber="17">Mesosaccella rogovi</emphasis>
|
||
</taxonomicName>
|
||
differs from
|
||
<taxonomicName id="ED98D7D89F09E33506BFFD10FBB32B98" authority="(Deshayes, 1853)" baseAuthorityName="Deshayes" baseAuthorityYear="1853" box="[718,1051,692,717]" class="Bivalvia" family="Malletiidae" genus="Mesosaccella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Nuculanida" pageId="16" pageNumber="17" phylum="Mollusca" rank="species" species="morrisi">
|
||
<emphasis id="18EC70499F09E33506BFFD10FCE12B99" box="[718,841,693,716]" italics="true" pageId="16" pageNumber="17">M. morrisi</emphasis>
|
||
(
|
||
<bibRefCitation id="4E09D1AA9F09E335072AFD11FBBA2B98" author="Deshayes, G. P." box="[859,1042,692,717]" pageId="16" pageNumber="17" refId="ref31800" refString="Deshayes, G. P. (1853) Traite elementaire de Conchyliologie 1, (2). Victor Masson, Paris, 273 - 368, i-xii." type="book" year="1853">Deshayes, 1853</bibRefCitation>
|
||
)
|
||
</taxonomicName>
|
||
in being more elongated, having stronger commarginal ornament and, in addition, showing a weak dorsal carina and growth line deflections in the posterior shell areas (cf.
|
||
<bibRefCitation id="4E09D1AA9F09E33505DBFD59FD892A40" author="Duff, K. L." box="[426,545,764,789]" pageId="16" pageNumber="17" pagination="1 - 137" refId="ref31890" refString="Duff, K. L. (1978) Bivalvia from the English lower Oxford Clay (Middle Jurassic). Palaeontographical Society Monograph s, 132, 1 - 137, pls. 1 - 13." type="journal article" year="1978">Duff 1978</bibRefCitation>
|
||
).
|
||
<taxonomicName id="ED98D7D89F09E3350645FD59FC5C2A40" authority="(Goldfuss, 1837)" baseAuthorityName="Goldfuss" baseAuthorityYear="1837" box="[564,1012,764,789]" class="Bivalvia" family="Malletiidae" genus="Mesosaccella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Nuculanida" pageId="16" pageNumber="17" phylum="Mollusca" rank="species" species="elliptica">
|
||
<emphasis id="18EC70499F09E3350645FD59FC872A40" box="[564,815,764,789]" italics="true" pageId="16" pageNumber="17">Mesosaccella elliptica</emphasis>
|
||
(
|
||
<bibRefCitation id="4E09D1AA9F09E335074FFD59FC432A40" author="Goldfuss, G. A." box="[830,1003,764,789]" pageId="16" pageNumber="17" pagination="141 - 224" refId="ref33095" refString="Goldfuss, G. A. (1837) Petrefacta Germaniae 2 (3). Arnz, Dusseldorf, 84 pp., pls. 141 - 224, 25 pls." type="book chapter" year="1837">Goldfuss, 1837</bibRefCitation>
|
||
)
|
||
</taxonomicName>
|
||
has a shape closer to
|
||
<taxonomicName id="ED98D7D89F09E3350096FD58FAFC2A41" authorityName="Hryniewicz & Little & Nakrem" authorityYear="2014" box="[1255,1364,765,788]" class="Bivalvia" family="Malletiidae" genus="Mesosaccella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Nuculanida" pageId="16" pageNumber="17" phylum="Mollusca" rank="species" species="rogovi">
|
||
<emphasis id="18EC70499F09E3350096FD58FAFC2A41" box="[1255,1364,765,788]" italics="true" pageId="16" pageNumber="17">M. rogovi</emphasis>
|
||
</taxonomicName>
|
||
, but it lacks the distinctive commarginal ornament deflections in the posterior part of the shell and the dorsal carina (
|
||
<bibRefCitation id="4E09D1AA9F0BE33704EFFF32FE9429E5" author="Hodges, P." box="[158,316,151,176]" pageId="18" pageNumber="19" pagination="1 - 64" refId="ref34144" refString="Hodges, P. (2000) The Early Jurassic Bivalvia from the Hettangian and Lower Sinemurian of South-West Britain. Palaentographical Society Monographs, 154, 1 - 64 + vii, pls. 1 - 6." type="journal article" year="2000">Hodges 2000</bibRefCitation>
|
||
).
|
||
<taxonomicName id="ED98D7D89F0BE3370520FF32FCD129E5" authority="(Borissjak, 1904)" baseAuthorityName="Borissjak" baseAuthorityYear="1904" box="[337,889,151,176]" class="Bivalvia" family="Malletiidae" genus="Mesosaccella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Nuculanida" pageId="18" pageNumber="19" phylum="Mollusca" rank="species" species="choroschovensis">
|
||
<emphasis id="18EC70499F0BE3370520FF32FD0329E5" box="[337,683,151,176]" italics="true" pageId="18" pageNumber="19">Mesosaccella choroschovensis</emphasis>
|
||
(
|
||
<bibRefCitation id="4E09D1AA9F0BE33706CAFF32FCD929E5" author="Borissjak, A." box="[699,881,151,176]" pageId="18" pageNumber="19" pagination="1 - 49" refId="ref30097" refString="Borissjak, A. (1904) Die Pelecypoden der Jura-Ablagerungen im Europaeischen Russland. I. Nuculidae. Memoires du Comite Geologique, Nouvelle Serie, 11, 1 - 49, pls. 1 - 3." type="journal article" year="1904">Borissjak, 1904</bibRefCitation>
|
||
)
|
||
</taxonomicName>
|
||
is much shorter and more oval than
|
||
<taxonomicName id="ED98D7D89F0BE3370154FF3CFA3D29FA" authorityName="Hryniewicz & Little & Nakrem" authorityYear="2014" box="[1317,1429,152,176]" class="Bivalvia" family="Malletiidae" genus="Mesosaccella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Nuculanida" pageId="18" pageNumber="19" phylum="Mollusca" rank="species" species="rogovi">
|
||
<emphasis id="18EC70499F0BE3370154FF3CFA9429E5" box="[1317,1340,153,176]" italics="true" pageId="18" pageNumber="19">M</emphasis>
|
||
.
|
||
<emphasis id="18EC70499F0BE337013CFF3DFA3D29FA" box="[1357,1429,152,175]" italics="true" pageId="18" pageNumber="19">rogovi</emphasis>
|
||
</taxonomicName>
|
||
, with a gently rounded posterior end and lacks the ridges of
|
||
<taxonomicName id="ED98D7D89F0BE3370730FF18FC182981" authorityName="Hryniewicz & Little & Nakrem" authorityYear="2014" box="[833,944,188,212]" class="Bivalvia" family="Malletiidae" genus="Mesosaccella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Nuculanida" pageId="18" pageNumber="19" phylum="Mollusca" rank="species" species="rogovi">
|
||
<emphasis id="18EC70499F0BE3370730FF18FCF02981" box="[833,856,189,212]" italics="true" pageId="18" pageNumber="19">M</emphasis>
|
||
.
|
||
<emphasis id="18EC70499F0BE3370719FF18FC182981" box="[872,944,189,212]" italics="true" pageId="18" pageNumber="19">rogovi</emphasis>
|
||
</taxonomicName>
|
||
.
|
||
<taxonomicName id="ED98D7D89F0BE33707B1FF19FB572980" authority="Forbes, 1845" authorityName="Forbes" authorityYear="1845" box="[960,1279,188,213]" class="Bivalvia" family="Bathyspinulidae" genus="Leda" higherTaxonomySource="CoL" kingdom="Animalia" order="Nuculanida" pageId="18" pageNumber="19" phylum="Mollusca" rank="species" species="striatula">
|
||
<emphasis id="18EC70499F0BE33707B1FF19FBF72980" box="[960,1119,188,213]" italics="true" pageId="18" pageNumber="19">Leda striatula</emphasis>
|
||
<bibRefCitation id="4E09D1AA9F0BE3370019FF19FB572980" author="Forbes, E." box="[1128,1279,188,213]" pageId="18" pageNumber="19" pagination="97 - 174" refId="ref32346" refString="Forbes, E. (1845) Report on the fossil Invertebrata from Southern India, collected by Mr. Kaye and Mr. Cunliffe. Transactions of the Geological Society of London. Series 2, 7, 97 - 174, pls. 7 - 19. http: // dx. doi. org / 10.1144 / transgslb. 7.97" type="journal article" year="1845">Forbes, 1845</bibRefCitation>
|
||
</taxonomicName>
|
||
, has a similar growth line deflection to
|
||
<taxonomicName id="ED98D7D89F0BE33705CFFF44FD8729A2" authorityName="Hryniewicz & Little & Nakrem" authorityYear="2014" box="[446,559,224,248]" class="Bivalvia" family="Malletiidae" genus="Mesosaccella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Nuculanida" pageId="18" pageNumber="19" phylum="Mollusca" rank="species" species="rogovi">
|
||
<emphasis id="18EC70499F0BE33705CFFF44FE7D29AD" box="[446,469,225,248]" italics="true" pageId="18" pageNumber="19">M</emphasis>
|
||
.
|
||
<emphasis id="18EC70499F0BE3370596FF45FD8729A2" box="[487,559,224,247]" italics="true" pageId="18" pageNumber="19">rogovi</emphasis>
|
||
</taxonomicName>
|
||
in the posterior area. However, it is both less elongated and has a stronger carina than
|
||
<taxonomicName id="ED98D7D89F0BE337056BFEA0FE232849" authorityName="Hryniewicz & Little & Nakrem" authorityYear="2014" box="[282,395,260,284]" class="Bivalvia" family="Malletiidae" genus="Mesosaccella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Nuculanida" pageId="18" pageNumber="19" phylum="Mollusca" rank="species" species="rogovi">
|
||
<emphasis id="18EC70499F0BE337056BFEA0FE992849" box="[282,305,261,284]" italics="true" pageId="18" pageNumber="19">M</emphasis>
|
||
.
|
||
<emphasis id="18EC70499F0BE337054EFEA0FE232849" box="[319,395,261,284]" italics="true" pageId="18" pageNumber="19">rogovi</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="18EC70499F0BE33705FAFEA0FDD52849" box="[395,637,260,285]" italics="true" pageId="18" pageNumber="19">
|
||
.
|
||
<taxonomicName id="ED98D7D89F0BE33705E4FEA1FDD52849" authorityName="Hryniewicz & Little & Nakrem" authorityYear="2014" box="[405,637,260,285]" class="Bivalvia" family="Malletiidae" genus="Mesosaccella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Nuculanida" pageId="18" pageNumber="19" phylum="Mollusca" rank="species" species="rogovi">Mesosaccella rogovi</taxonomicName>
|
||
</emphasis>
|
||
is as elongated as both
|
||
<taxonomicName id="ED98D7D89F0BE33707F9FEA0FB3F2848" authority="(Lartet, 1872)" baseAuthorityName="Lartet" baseAuthorityYear="1872" box="[904,1175,260,285]" class="Bivalvia" family="Malletiidae" genus="Mesosaccella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Nuculanida" pageId="18" pageNumber="19" phylum="Mollusca" rank="species" species="grovei">
|
||
<emphasis id="18EC70499F0BE33707F9FEA0FC372849" box="[904,927,261,284]" italics="true" pageId="18" pageNumber="19">M</emphasis>
|
||
.
|
||
<emphasis id="18EC70499F0BE33707DFFEA0FC5C2849" box="[942,1012,261,284]" italics="true" pageId="18" pageNumber="19">grovei</emphasis>
|
||
(
|
||
<bibRefCitation id="4E09D1AA9F0BE3370072FEA1FB272848" author="Lartet, L." box="[1027,1167,260,285]" pageId="18" pageNumber="19" pagination="1 - 96" refId="ref36411" refString="Lartet, L. (1872) Essai sur la geologie de la Palestine et des contrees avoisinantes: telles que l'Egypte et l'Arabie, comprenant les observations recueillies dans le cours de l'expedition du duc de Luynes a la Mer Morte. Suivi de Propositions de geologie et de botanique donnees par la faculte (3). Annales des Sciences geologiques, 1 - 96, pls. 9 - 12." type="book chapter" year="1872">Lartet, 1872</bibRefCitation>
|
||
)
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="ED98D7D89F0BE33700BFFEA0FF7A2815" authority="Chavan, 1947" authorityName="Chavan" authorityYear="1947" class="Bivalvia" family="Malletiidae" genus="Mesosaccella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Nuculanida" pageId="18" pageNumber="19" phylum="Mollusca" rank="species" species="larteti">
|
||
<emphasis id="18EC70499F0BE33700BFFEA0FB4D2849" box="[1230,1253,261,284]" italics="true" pageId="18" pageNumber="19">M</emphasis>
|
||
.
|
||
<emphasis id="18EC70499F0BE3370085FEA1FA902848" box="[1268,1336,260,285]" italics="true" pageId="18" pageNumber="19">larteti</emphasis>
|
||
<bibRefCitation id="4E09D1AA9F0BE337014EFEA1FF7A2815" author="Chavan, A." pageId="18" pageNumber="19" pagination="125 - 196" refId="ref30446" refString="Chavan, A. (1947) La faune campanienne du Mont des Oliviers d'apres les materiaux Vignal-Masse. Journal de Conchyliologie, 87, 125 - 196." type="journal article" year="1947">Chavan, 1947</bibRefCitation>
|
||
</taxonomicName>
|
||
, but it is more inequilateral than the former and has much weaker commarginal ornament than the latter.
|
||
</paragraph>
|
||
<caption id="7EE7FCD39F09E33504E6F831FF5F2E99" ID-DOI="http://doi.org/10.5281/zenodo.4930122" ID-Zenodo-Dep="4930122" httpUri="https://zenodo.org/record/4930122/files/figure.png" pageId="16" pageNumber="17" startId="16.[151,250,1940,1962]" targetBox="[231,1347,884,1929]" targetPageId="16">
|
||
<paragraph id="2A27AC5B9F09E33504E6F831FF5F2E99" blockId="16.[151,1435,1940,1996]" pageId="16" pageNumber="17">
|
||
<emphasis id="18EC70499F09E33504E6F831FEBB2EFF" bold="true" box="[151,275,1940,1962]" pageId="16" pageNumber="17">FIGURE 6.</emphasis>
|
||
Measurements of
|
||
<taxonomicName id="ED98D7D89F09E33505A1F831FD6D2EFF" authority="Hryniewicz & Little & Nakrem, 2014" authorityName="Hryniewicz & Little & Nakrem" authorityYear="2014" box="[464,709,1940,1962]" class="Bivalvia" family="Manzanellidae" genus="Nucinella" kingdom="Animalia" order="Solemyoida" pageId="16" pageNumber="17" phylum="Mollusca" rank="species" species="svalbardensis" status="sp. nov.">
|
||
<emphasis id="18EC70499F09E33505A1F831FD6D2EFF" box="[464,709,1940,1962]" italics="true" pageId="16" pageNumber="17">Nucinella svalbardensis</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="18EC70499F09E33506BAF831FCB42EFF" bold="true" box="[715,796,1940,1962]" pageId="16" pageNumber="17">
|
||
<taxonomicNameLabel id="03DFCD329F09E33506BAF831FCB42EFF" box="[715,796,1940,1962]" pageId="16" pageNumber="17" rank="species">sp. nov.</taxonomicNameLabel>
|
||
</emphasis>
|
||
(in mm). (A) Height to length. (B) Width to length. (C) Width to height.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="2A27AC5B9F0BE33704B4FEE9FEC828DD" blockId="18.[151,1436,151,645]" pageId="18" pageNumber="19">
|
||
<emphasis id="18EC70499F0BE33704B4FEE9FEFF2830" bold="true" box="[197,343,332,357]" pageId="18" pageNumber="19">Occurrence.</emphasis>
|
||
Seeps 1, 2, 3, 5, 8, 9, 12, 13 and 15 (Upper Volgian–uppermost Ryazanian), Slottsmøya Member,
|
||
<collectingCountry id="528FECCB9F0BE33704E6FECAFF5328DD" box="[151,251,367,392]" name="Svalbard and Jan Mayen" pageId="18" pageNumber="19">Svalbard</collectingCountry>
|
||
(
|
||
<tableCitation id="671A99E09F0BE3370578FECAFEE728DD" box="[265,335,367,392]" captionStart="TABLE 1" captionStartId="5.[151,239,798,821]" captionTargetPageId="5" captionText="TABLE 1. Distribution of discussed species in the Svalbard seeps." httpUri="http://table.plazi.org/id/7EE7FCD39F1CE32004E6FCBBFCF62A60" pageId="18" pageNumber="19" tableUuid="7EE7FCD39F1CE32004E6FCBBFCF62A60">Tab. 1</tableCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph id="2A27AC5B9F0BE33704B4FE31FC462BD6" blockId="18.[151,1436,151,645]" pageId="18" pageNumber="19">
|
||
<emphasis id="18EC70499F0BE33704B4FE31FEDB28F8" bold="true" box="[197,371,404,429]" pageId="18" pageNumber="19">Palaeoecology.</emphasis>
|
||
<taxonomicName id="ED98D7D89F0BE33705F0FE31FDD828F9" authorityName="Hryniewicz & Little & Nakrem" authorityYear="2014" box="[385,624,404,429]" class="Bivalvia" family="Malletiidae" genus="Mesosaccella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Nuculanida" pageId="18" pageNumber="19" phylum="Mollusca" rank="species" species="rogovi">
|
||
<emphasis id="18EC70499F0BE33705F0FE31FDD828F9" box="[385,624,404,429]" italics="true" pageId="18" pageNumber="19">Mesosaccella rogovi</emphasis>
|
||
</taxonomicName>
|
||
was probably a shallow burrower, like other protobranch bivalves (
|
||
<bibRefCitation id="4E09D1AA9F0BE33704EFFE12FE922885" author="Stanley, S. M." box="[158,314,439,464]" pageId="18" pageNumber="19" pagination="1 - 296" refId="ref40700" refString="Stanley, S. M. (1970) Relation of shell form to life habits of the Bivalvia (Mollusca). The Geological Society of America Memoir, 125, 1 - 296. http: // dx. doi. org / 10.1130 / mem 125 - p 1" type="journal article" year="1970">Stanley 1970</bibRefCitation>
|
||
;
|
||
<bibRefCitation id="4E09D1AA9F0BE337053BFE12FDFB2885" author="Sanders, H. L. & Allen, J. A." box="[330,595,439,464]" pageId="18" pageNumber="19" pagination="195 - 238" refId="ref39664" refString="Sanders, H. L. & Allen, J. A. (1985) Studies on deep-sea Protobranchia (Bivalvia); the family Malletiidae. Bulletin of the British Museum (Natural History) Zoology, 49, 195 - 238." type="journal article" year="1985">Sanders & Allen 1985</bibRefCitation>
|
||
;
|
||
<bibRefCitation id="4E09D1AA9F0BE3370615FE12FD522885" author="Zardus, J. D." box="[612,762,439,464]" pageId="18" pageNumber="19" pagination="1 - 65" refId="ref43200" refString="Zardus, J. D. (2002) Protobranch bivalves. Advances in Marine Biology, 42, 1 - 65. http: // dx. doi. org / 10.1016 / s 0065 - 2881 (02) 42012 - 3" type="journal article" year="2002">Zardus 2002</bibRefCitation>
|
||
). The elongated and streamlined shell indicates it was an efficient burrower, and the very shallow pallial sinus implies the presence of a short siphon, developed either for respiration or for feeding from the sediment-water interface (e.g.
|
||
<bibRefCitation id="4E09D1AA9F0BE33707F2FE5AFBB52B4D" author="Hodges, P." box="[899,1053,511,536]" pageId="18" pageNumber="19" pagination="1 - 64" refId="ref34144" refString="Hodges, P. (2000) The Early Jurassic Bivalvia from the Hettangian and Lower Sinemurian of South-West Britain. Palaentographical Society Monographs, 154, 1 - 64 + vii, pls. 1 - 6." type="journal article" year="2000">Hodges 2000</bibRefCitation>
|
||
, text-fig. 32). Some protobranchs inhabiting modern vent and seep environments are believed to benefit from the concentration of chemosynthetically produced organic matter in the sediments, and possibly even feed on bacterial mats (e.g.
|
||
<bibRefCitation id="4E09D1AA9F0BE337012FFDE2FF7A2BD0" author="Allen, J. A." pageId="18" pageNumber="19" pagination="141 - 151" refId="ref29216" refString="Allen, J. A. (1993) A new deep-water hydrothermal species of Nuculana (Bivalvia: Protobranchia) from the Guaymas Basin. Malacologia, 35, 141 - 151." type="journal article" year="1993">Allen 1993</bibRefCitation>
|
||
;
|
||
<bibRefCitation id="4E09D1AA9F0BE33704ACFDC9FE1E2BD0" author="Sahling, H. & Rickert, D. & Lee, R. W. & Linke, P. & Suess, P." box="[221,438,620,645]" pageId="18" pageNumber="19" pagination="121 - 138" refId="ref39520" refString="Sahling, H., Rickert, D., Lee, R. W., Linke, P. & Suess, P. (2002) Macrofaunal community structure and sulfide flux at gas hydrate deposits from the Cascadia convergent margin, NE Pacific. Marine Ecology Progress Series, 231, 121 - 138. http: // dx. doi. org / 10.3354 / meps 231121" type="journal article" year="2002">
|
||
Sahling
|
||
<emphasis id="18EC70499F0BE337054BFDC8FEDA2BD0" box="[314,370,620,645]" italics="true" pageId="18" pageNumber="19">et al.</emphasis>
|
||
2002
|
||
</bibRefCitation>
|
||
). We assume
|
||
<taxonomicName id="ED98D7D89F0BE337063CFDC8FD132BD1" authorityName="Hryniewicz & Little & Nakrem" authorityYear="2014" box="[589,699,620,644]" class="Bivalvia" family="Malletiidae" genus="Mesosaccella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Nuculanida" pageId="18" pageNumber="19" phylum="Mollusca" rank="species" species="rogovi">
|
||
<emphasis id="18EC70499F0BE337063CFDC8FDCC2BD1" box="[589,612,621,644]" italics="true" pageId="18" pageNumber="19">M</emphasis>
|
||
.
|
||
<emphasis id="18EC70499F0BE3370602FDC8FD132BD1" box="[627,699,621,644]" italics="true" pageId="18" pageNumber="19">rogovi</emphasis>
|
||
</taxonomicName>
|
||
might have done the same.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |