196 lines
25 KiB
XML
196 lines
25 KiB
XML
<document id="DF1411CE10822E7743077960E27E1B4E" ID-DOI="10.11646/zootaxa.4804.1.1" ID-ISSN="1175-5326" ID-Zenodo-Dep="3927094" ID-ZooBank="8C1C1703-9BBC-4B33-8045-78BDD9738F51" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1593672611012" checkinUser="plazi" docAuthor="Westrop, Madison Armstrong Stephen R. & Eoff, Jennifer D." docDate="2020" docId="03F76D37FFA3FFC46BD2E671FE31942F" docLanguage="en" docName="zootaxa.4804.1.1.pdf" docOrigin="Zootaxa 4804 (1)" docStyle="DocumentStyle:5EBBA59367AD13919D70D935FA04F6A3.14:Zootaxa.2013-.monograph" docStyleId="5EBBA59367AD13919D70D935FA04F6A3" docStyleName="Zootaxa.2013-.monograph" docStyleVersion="14" docTitle="Blountia janei Lochman, in Lochman & Duncan 1944" docType="treatment" docVersion="4" lastPageNumber="13" masterDocId="FFCE154FFFAFFFC86B45E438FF8E9206" masterDocTitle="Systematics of a survivor: the Cambrian kingstoniid trilobite Blountia Walcott, 1916 across the Marjuman-Steptoean (Guzhangian-Paibian) extinction interval in Laurentian North America" masterLastPageNumber="79" masterPageNumber="1" pageNumber="13" updateTime="1698776919363" updateUser="plazi">
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<mods:title id="5C5421B027D7D68F84F2E3969C6953A6">Systematics of a survivor: the Cambrian kingstoniid trilobite Blountia Walcott, 1916 across the Marjuman-Steptoean (Guzhangian-Paibian) extinction interval in Laurentian North America</mods:title>
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<mods:namePart id="34C557E372B0340A3F5617381ABE4C23">Westrop, Madison Armstrong Stephen R.</mods:namePart>
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<mods:namePart id="7A7EDBB8C32F3D8B38FEE638A0B3E7B8">Eoff, Jennifer D.</mods:namePart>
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<mods:title id="731F2E3FF205AE8F8F8ABD7B08BBA4F1">Zootaxa</mods:title>
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<mods:number id="B01E61C21682462FFBF287077546A9D2">4804</mods:number>
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<subSubSection id="C3448FAAFFA3FFC46BD2E671FCB59065" box="[151,827,585,612]" pageId="12" pageNumber="13" type="nomenclature">
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<paragraph id="8BE1DC21FFA3FFC46BD2E671FCB59065" blockId="12.[151,827,585,647]" box="[151,827,585,612]" pageId="12" pageNumber="13">
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<heading id="D0A96B4DFFA3FFC46BD2E671FCB59065" bold="true" box="[151,827,585,612]" fontSize="11" level="1" pageId="12" pageNumber="13" reason="1">
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<taxonomicName id="4C5EA7A2FFA3FFC46BD2E671FCB59065" authority="Lochman, in Lochman & Duncan, 1944" authorityName="Lochman, in Lochman & Duncan" authorityYear="1944" box="[151,827,585,612]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="12" pageNumber="13" phylum="Arthropoda" rank="species" species="janei">
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<emphasis id="B92A0033FFA3FFC46BD2E671FCB59065" bold="true" box="[151,827,585,612]" pageId="12" pageNumber="13">
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<emphasis id="B92A0033FFA3FFC46BD2E671FECA9065" bold="true" box="[151,324,585,612]" italics="true" pageId="12" pageNumber="13">Blountia janei</emphasis>
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Lochman, in
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<bibRefCitation id="EFCFA1D0FFA3FFC46AB7E671FCB59065" author="Lochman, C. & Duncan, D." box="[498,827,585,611]" pageId="12" pageNumber="13" pagination="1 - 172" refId="ref23573" refString="Lochman, C. & Duncan, D. (1944) Early Upper Cambrian faunas of Central Montana. Geological Society of America Special Papers, 54, 1 - 172. https: // doi. org / 10.1130 / SPE 54 - p 1" type="journal article" year="1944">Lochman & Duncan, 1944</bibRefCitation>
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</emphasis>
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</taxonomicName>
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</heading>
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</paragraph>
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</subSubSection>
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<subSubSection id="C3448FAAFFA3FFC46BD2E655FAE390EE" pageId="12" pageNumber="13" type="description">
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<paragraph id="8BE1DC21FFA3FFC46BD2E655FE389081" blockId="12.[151,827,585,647]" box="[151,438,621,647]" pageId="12" pageNumber="13">
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<figureCitation id="1365C0A4FFA3FFC46BD2E655FF689081" box="[151,230,621,647]" captionStart="PLATE 7" captionStartId="38.[151,234,1809,1834]" captionText="PLATE 7. Blountia janei Lochman, in Lochman & Duncan, 1944, from the Pilgrim Formation, Montana. 1–3. Pygidium, paratype, USNM 127145a, dorsal, lateral and posterior views, x16 (illustrated by Lochman & Duncan 1944, pl. 8, figs 3, 6). 4–6. Pygidium, paratype, USNM 127145b, dorsal, lateral and posterior views, x16 (illustrated by Lochman & Duncan 1944, pl. 8, fig. 4). 7. Pygidium, paratype, USNM 127146, dorsal view, x16 (previously unillustrated). 8. Pygidium, paratype, USNM 127149, dorsal view, x18 (previously unillustrated). Blountia cora Lochman, in Lochman & Duncan, 1944, from the Pilgrim Formation, Half Moon Pass, Big Snowy Mountains, Montana. 9, 10. Pygidium, paratype, USNM 127145b, dorsal and lateral views, x15 (illustrated by Lochman & Duncan 1944, pl. 8, figs 9, 10). 11–13. Cranidium, paratype, USNM 127153, lateral, dorsal and anterior views, x20 (previously unillustrated). 14. Pygidium, paratype, USNM 127153, dorsal view, x20 (previously unillustrated)." pageId="12" pageNumber="13">Plate 7</figureCitation>
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, figs 1–10,
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<figureCitation id="1365C0A4FFA3FFC46A2CE655FE389081" box="[361,438,621,647]" captionStart="PLATE 8" captionStartId="40.[151,234,1927,1952]" captionText="PLATE 8. Blountia janei Lochman, in Lochman & Duncan, 1944, from the Pilgrim Formation, Montana. 1, 2. Cranidium, paratype, USNM 127149, dorsal and anterior views, x15 (previously unillustrated). 3–5. Cranidium, holotype, USNM 127144, lateral, dorsal and anterior views, x17 (illustrated by Lochman & Duncan 1944, pl. 8, figs 2, 5). 6, 7. Cranidium, paratype, USNM 127150, lateral and dorsal views, x17 (previously unillustrated)." pageId="12" pageNumber="13">Plate 8</figureCitation>
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</paragraph>
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<paragraph id="8BE1DC21FFA3FFC46BD2E689FC1590CF" blockId="12.[151,1389,688,744]" box="[151,923,688,713]" pageId="12" pageNumber="13">
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1944
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<taxonomicName id="4C5EA7A2FFA3FFC46B95E689FD3090CF" authority="Lochman, in Lochman & Duncan" authorityName="Lochman, in Lochman & Duncan" authorityYear="1944" box="[208,702,688,713]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="12" pageNumber="13" phylum="Arthropoda" rank="species" species="janei">
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<emphasis id="B92A0033FFA3FFC46B95E689FEEF90CF" box="[208,353,689,713]" italics="true" pageId="12" pageNumber="13">Blountia janei</emphasis>
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Lochman, in Lochman & Duncan
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</taxonomicName>
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, p. 52, pl. 8, figs 1–6.
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</paragraph>
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<paragraph id="8BE1DC21FFA3FFC46BD2E6E9FAE390EE" blockId="12.[151,1389,688,744]" box="[151,1389,719,744]" pageId="12" pageNumber="13">
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<emphasis id="B92A0033FFA3FFC46BD2E6E9FF3390EE" box="[151,189,721,744]" italics="true" pageId="12" pageNumber="13">non</emphasis>
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2000
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<taxonomicName id="4C5EA7A2FFA3FFC46BB8E6E8FD6290E1" authority="Lochman, in Lochman & Duncan" authorityName="Lochman, in Lochman & Duncan" authorityYear="1944" box="[253,748,719,744]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="12" pageNumber="13" phylum="Arthropoda" rank="species" species="janei">
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<emphasis id="B92A0033FFA3FFC46BB8E6E8FE0390EE" box="[253,397,720,744]" italics="true" pageId="12" pageNumber="13">Blountia janei</emphasis>
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Lochman, in Lochman & Duncan
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</taxonomicName>
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; Stitt & Perfetta, p. 213, fig. 11.14–11.17 [=
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<taxonomicName id="4C5EA7A2FFA3FFC46FEFE6E8FA8F90EE" authorityName="Walcott" authorityYear="1916" box="[1194,1281,720,744]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="12" pageNumber="13" phylum="Arthropoda" rank="genus">
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<emphasis id="B92A0033FFA3FFC46FEFE6E8FA8F90EE" box="[1194,1281,720,744]" italics="true" pageId="12" pageNumber="13">Blountia</emphasis>
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</taxonomicName>
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sp. indet].
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</paragraph>
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</subSubSection>
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<subSubSection id="C3448FAAFFA3FFC46BD2E72BFD3591DD" pageId="12" pageNumber="13" type="diagnosis">
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<paragraph id="8BE1DC21FFA3FFC46BD2E72BFD3591DD" blockId="12.[151,1437,787,1577]" pageId="12" pageNumber="13">
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<emphasis id="B92A0033FFA3FFC46BD2E72BFE9C9128" bold="true" box="[151,274,787,814]" pageId="12" pageNumber="13">Diagnosis.</emphasis>
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Anterior cranidial margin broadly rounded. Frontal area equal to about one-third (31%; 27–34) of cranidial length. Anterior border furrow shallow; preglabellar field and anterior border subequal in length. Anteriorly rounded, subtrapezoidal glabella with strong convexity. Elongate, semielliptical pygidium, length nearly threequarters of maximum width (72%; 69–75), with faint border furrow; axial furrows become effaced posteriorly in larger specimens. Axis short, occupying 75% (74–78) of pygidial length; six axial rings, with three short segments incorporated into terminal piece (Pl. 7, figs 4–7).
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</paragraph>
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</subSubSection>
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<subSubSection id="C3448FAAFFA3FFC46B82E7DBFC0C96AD" pageId="12" pageNumber="13" type="materials_examined">
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<paragraph id="8BE1DC21FFA3FFC46B82E7DBFC299660" blockId="12.[151,1437,787,1577]" pageId="12" pageNumber="13">
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<emphasis id="B92A0033FFA3FFC46B82E7DBFEB891F8" bold="true" box="[199,310,995,1022]" pageId="12" pageNumber="13">Material.</emphasis>
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<materialsCitation id="3B36D67CFFA3FFC46A7BE7DBFC299660" collectingDate="49-12-21" collectionCode="USNM" county="Pilgrim Formation" location="Big Snowy Mountains" municipality="Half Moon Pass" pageId="12" pageNumber="13" specimenCode="USNM 127144, USNM 127150, USNM 127145, USNM 127146, USNM 127149" specimenCount="2" stateProvince="Montana" typeStatus="holotype">
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<typeStatus id="54E56283FFA3FFC46A7BE7DBFE2891FB" box="[318,422,995,1021]" pageId="12" pageNumber="13" type="holotype">Holotype</typeStatus>
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cranidium (
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<specimenCode id="DBF8745AFFA3FFC4696BE7DCFD6E91F8" box="[558,736,996,1022]" collectionCode="USNM" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34871" lsid="urn:lsid:biocol.org:col:34871" name="Smithsonian Institution, National Museum of Natural History" pageId="12" pageNumber="13" type="Museum">USNM 127144</specimenCode>
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, Pl. 8, figs 3–5), two
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<typeStatus id="54E56283FFA3FFC46896E7DCFBBD91F8" box="[979,1075,996,1022]" pageId="12" pageNumber="13" type="paratype">paratype</typeStatus>
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cranidia (
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<collectionCode id="ED4F44E4FFA3FFC46FE1E7DCFB7991F8" box="[1188,1271,996,1022]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34871" lsid="urn:lsid:biocol.org:col:34871" name="Smithsonian Institution, National Museum of Natural History" pageId="12" pageNumber="13" type="Museum">USNM</collectionCode>
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<date id="FFE0FAE1FFA3FFC46FBAE7DCFAD891F8" box="[1279,1366,996,1022]" pageId="12" pageNumber="13" value="49-12-21">
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<collectingDate id="EFA40309FFA3FFC46FBAE7DCFAD891F8" box="[1279,1366,996,1022]" pageId="12" pageNumber="13" value="49-12-21">122149</collectingDate>
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</date>
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, Pl. 8, figs 1, 2;
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<specimenCode id="DBF8745AFFA3FFC46A45E03EFE209626" box="[256,430,1029,1056]" collectionCode="USNM" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34871" lsid="urn:lsid:biocol.org:col:34871" name="Smithsonian Institution, National Museum of Natural History" pageId="12" pageNumber="13" type="Museum">USNM 127150</specimenCode>
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, Pl. 8, figs 6, 7), and four pygidia (
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<specimenCode id="DBF8745AFFA3FFC46874E03EFC6F9626" box="[817,993,1029,1056]" collectionCode="USNM" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34871" lsid="urn:lsid:biocol.org:col:34871" name="Smithsonian Institution, National Museum of Natural History" pageId="12" pageNumber="13" type="Museum">USNM 127145</specimenCode>
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a, Pl. 7 figs 1–3;
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<specimenCode id="DBF8745AFFA3FFC46FDEE03EFAC49626" box="[1179,1354,1029,1056]" collectionCode="USNM" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34871" lsid="urn:lsid:biocol.org:col:34871" name="Smithsonian Institution, National Museum of Natural History" pageId="12" pageNumber="13" type="Museum">USNM 127145</specimenCode>
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b, Pl. 7, figs 4–6;
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<specimenCode id="DBF8745AFFA3FFC46A47E011FE3F9645" box="[258,433,1065,1091]" collectionCode="USNM" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34871" lsid="urn:lsid:biocol.org:col:34871" name="Smithsonian Institution, National Museum of Natural History" pageId="12" pageNumber="13" type="Museum">USNM 127146</specimenCode>
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, Pl. 10, fig. 7;
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<specimenCode id="DBF8745AFFA3FFC46912E011FC899645" box="[599,775,1065,1091]" collectionCode="USNM" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34871" lsid="urn:lsid:biocol.org:col:34871" name="Smithsonian Institution, National Museum of Natural History" pageId="12" pageNumber="13" type="Museum">USNM 127149</specimenCode>
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, Pl. 8, fig. 8) from the
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<collectingCounty id="6280A4ADFFA3FFC46F4DE011FB529645" box="[1032,1244,1065,1091]" pageId="12" pageNumber="13">Pilgrim Formation</collectingCounty>
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,
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<collectingMunicipality id="6B85465BFFA3FFC46FA2E011FA129645" box="[1255,1436,1065,1091]" pageId="12" pageNumber="13">Half Moon Pass</collectingMunicipality>
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section (
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<bibRefCitation id="EFCFA1D0FFA3FFC46BB0E073FD909660" author="Lochman, C. & Duncan, D." box="[245,542,1099,1126]" pageId="12" pageNumber="13" pagination="1 - 172" refId="ref23573" refString="Lochman, C. & Duncan, D. (1944) Early Upper Cambrian faunas of Central Montana. Geological Society of America Special Papers, 54, 1 - 172. https: // doi. org / 10.1130 / SPE 54 - p 1" type="journal article" year="1944">Lochman & Duncan 1944</bibRefCitation>
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),
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<location id="8E818AFAFFA3FFC46977E073FCBF9663" LSID="urn:lsid:plazi:treatment:03F76D37FFA3FFC46BD2E671FE31942F:8E818AFAFFA3FFC46977E073FCBF9663" box="[562,817,1099,1126]" county="Pilgrim Formation" municipality="Half Moon Pass" name="Big Snowy Mountains" pageId="12" pageNumber="13" stateProvince="Montana">Big Snowy Mountains</location>
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,
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<collectingRegion id="499A12C3FFA3FFC46879E074FC2D9660" box="[828,931,1100,1126]" country="United States of America" name="Montana" pageId="12" pageNumber="13">Montana</collectingRegion>
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.
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</materialsCitation>
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</paragraph>
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<paragraph id="8BE1DC21FFA3FFC46B82E055FC0C96AD" blockId="12.[151,1437,787,1577]" pageId="12" pageNumber="13">
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<emphasis id="B92A0033FFA3FFC46B82E055FED4968E" bold="true" box="[199,346,1133,1160]" pageId="12" pageNumber="13">Occurrence.</emphasis>
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<taxonomicName id="4C5EA7A2FFA3FFC46A27E056FC64968F" authority="Zone, Pilgrim Formation, Half Moon Pass" authorityName="Zone, Pilgrim Formation, Half Moon Pass" box="[354,1002,1134,1161]" class="Trilobita" family="Crepicephalidae" genus="Crepicephalus" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="12" pageNumber="13" phylum="Arthropoda" rank="genus">
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<emphasis id="B92A0033FFA3FFC46A27E056FD8A968E" box="[354,516,1134,1160]" italics="true" pageId="12" pageNumber="13">Crepicephalus</emphasis>
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<materialsCitation id="3B36D67CFFA3FFC46949E057FC64968F" box="[524,1002,1134,1161]" location="Big Snowy Mountains" pageId="12" pageNumber="13" specimenCount="1" stateProvince="Montana">Zone, Pilgrim Formation, Half Moon Pass</materialsCitation>
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</taxonomicName>
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section,
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<bibRefCitation id="EFCFA1D0FFA3FFC46F15E056FA12968E" author="Lochman, C. & Duncan, D." box="[1104,1436,1134,1160]" pageId="12" pageNumber="13" pagination="1 - 172" refId="ref23573" refString="Lochman, C. & Duncan, D. (1944) Early Upper Cambrian faunas of Central Montana. Geological Society of America Special Papers, 54, 1 - 172. https: // doi. org / 10.1130 / SPE 54 - p 1" type="journal article" year="1944">Lochman & Duncan’s (1944)</bibRefCitation>
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horizons 9.1, 9.1a, 9.1x, and 9.2,
|
||
<location id="8E818AFAFFA3FFC46949E0A9FC8296AD" LSID="urn:lsid:plazi:treatment:03F76D37FFA3FFC46BD2E671FE31942F:8E818AFAFFA3FFC46949E0A9FC8296AD" box="[524,780,1169,1195]" name="Big Snowy Mountains" pageId="12" pageNumber="13" stateProvince="Montana">Big Snowy Mountains</location>
|
||
,
|
||
<collectingRegion id="499A12C3FFA3FFC46852E0A9FCF096AD" box="[791,894,1169,1195]" country="United States of America" name="Montana" pageId="12" pageNumber="13">Montana</collectingRegion>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C3448FAAFFA3FFC46B82E08BFE31942F" pageId="12" pageNumber="13" type="discussion">
|
||
<paragraph id="8BE1DC21FFA3FFC46B82E08BFBE2977A" blockId="12.[151,1437,787,1577]" pageId="12" pageNumber="13">
|
||
<emphasis id="B92A0033FFA3FFC46B82E08BFEC296C8" bold="true" box="[199,332,1203,1230]" pageId="12" pageNumber="13">Discussion.</emphasis>
|
||
The distinctive, elongate pygidium with a short axis and weak border furrow (Pl. 7, figs 1–8) separates
|
||
<taxonomicName id="4C5EA7A2FFA3FFC46B91E0EFFEA296F6" authorityName="Lochman, in Lochman & Duncan" authorityYear="1944" box="[212,300,1239,1264]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="12" pageNumber="13" phylum="Arthropoda" rank="species" species="janei">
|
||
<emphasis id="B92A0033FFA3FFC46B91E0EFFEA296F6" box="[212,300,1239,1264]" italics="true" pageId="12" pageNumber="13">B. janei</emphasis>
|
||
</taxonomicName>
|
||
from other species assigned to
|
||
<taxonomicName id="4C5EA7A2FFA3FFC469D7E0EEFD7C96F6" authorityName="Walcott" authorityYear="1916" box="[658,754,1238,1264]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="12" pageNumber="13" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B92A0033FFA3FFC469D7E0EEFD7C96F6" box="[658,754,1238,1264]" italics="true" pageId="12" pageNumber="13">Blountia</emphasis>
|
||
</taxonomicName>
|
||
. The cranidium is most like
|
||
<taxonomicName id="4C5EA7A2FFA3FFC46F7DE0EFFB3F96F6" authorityName="Westrop & Eoff" authorityYear="2020" box="[1080,1201,1238,1264]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="12" pageNumber="13" phylum="Arthropoda" rank="species" species="angelae">
|
||
<emphasis id="B92A0033FFA3FFC46F7DE0EFFB3F96F6" box="[1080,1201,1238,1264]" italics="true" pageId="12" pageNumber="13">B. angelae</emphasis>
|
||
</taxonomicName>
|
||
(Pl. 15, figs 1–5), in possessing an evenly rounded anterior cranidial margin and a subtrapezoidal, anteriorly rounded glabella, although
|
||
<taxonomicName id="4C5EA7A2FFA3FFC46BD2E124FF609733" authorityName="Lochman, in Lochman & Duncan" authorityYear="1944" box="[151,238,1308,1334]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="12" pageNumber="13" phylum="Arthropoda" rank="species" species="janei">
|
||
<emphasis id="B92A0033FFA3FFC46BD2E124FF269733" box="[151,168,1308,1333]" italics="true" pageId="12" pageNumber="13">B</emphasis>
|
||
.
|
||
<emphasis id="B92A0033FFA3FFC46BF3E124FF609733" box="[182,238,1308,1333]" italics="true" pageId="12" pageNumber="13">janei</emphasis>
|
||
</taxonomicName>
|
||
has slightly bowed sides, and posterolateral projections that curve posteriorly. The pygidium of
|
||
<taxonomicName id="4C5EA7A2FFA3FFC46E60E124FA139730" authorityName="Westrop & Eoff" authorityYear="2020" box="[1317,1437,1308,1334]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="12" pageNumber="13" phylum="Arthropoda" rank="species" species="angelae">
|
||
<emphasis id="B92A0033FFA3FFC46E60E124FA139730" box="[1317,1437,1308,1334]" italics="true" pageId="12" pageNumber="13">B. angelae</emphasis>
|
||
</taxonomicName>
|
||
(Pl. 15, fig. 7–9) differs clearly in having longer axis with seven, rather than six segments in front of the terminal piece, and has a firmly impressed border furrow even on testate surfaces (Pl. 15, fig. 6).
|
||
</paragraph>
|
||
<paragraph id="8BE1DC21FFA3FFC46B82E1BBFE31942F" blockId="12.[151,1437,787,1577]" pageId="12" pageNumber="13">
|
||
Sclerites from the Deadwood Formation that were assigned to
|
||
<taxonomicName id="4C5EA7A2FFA3FFC4683DE1BCFC40979B" authorityName="Lochman, in Lochman & Duncan" authorityYear="1944" box="[888,974,1412,1438]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="12" pageNumber="13" phylum="Arthropoda" rank="species" species="janei">
|
||
<emphasis id="B92A0033FFA3FFC4683DE1BCFC07979B" box="[888,905,1412,1437]" italics="true" pageId="12" pageNumber="13">B</emphasis>
|
||
.
|
||
<emphasis id="B92A0033FFA3FFC468D3E1BCFC40979B" box="[918,974,1412,1437]" italics="true" pageId="12" pageNumber="13">janei</emphasis>
|
||
</taxonomicName>
|
||
by
|
||
<bibRefCitation id="EFCFA1D0FFA3FFC468B0E1BBFB719798" author="Stitt, J. H. & Perfetta, P. J." box="[1013,1279,1411,1438]" pageId="12" pageNumber="13" pagination="199 - 223" refId="ref24040" refString="Stitt, J. H. & Perfetta, P. J. (2000) Trilobites, biostratigraphy, and lithostratigraphy of the Crepicephalus and Aphelaspis zones, lower Deadwood Formation (Marjuman and Steptoean stages, Upper Cambrian), Black Hills, South Dakota. Journal of Paleontology, 74, 199 - 223. https: // doi. org / 10.1017 / S 0022336000031437" type="journal article" year="2000">Stitt and Perfetta (2000)</bibRefCitation>
|
||
do not belong to that species, and their status is uncertain. The pygidia (
|
||
<bibRefCitation id="EFCFA1D0FFA3FFC4686DE19EFB9497C6" author="Stitt, J. H. & Perfetta, P. J." box="[808,1050,1446,1472]" pageId="12" pageNumber="13" pagination="199 - 223" refId="ref24040" refString="Stitt, J. H. & Perfetta, P. J. (2000) Trilobites, biostratigraphy, and lithostratigraphy of the Crepicephalus and Aphelaspis zones, lower Deadwood Formation (Marjuman and Steptoean stages, Upper Cambrian), Black Hills, South Dakota. Journal of Paleontology, 74, 199 - 223. https: // doi. org / 10.1017 / S 0022336000031437" type="journal article" year="2000">Stitt & Perfetta 2000</bibRefCitation>
|
||
, fig. 11.16, 11.17) are shorter and wider than any in Lochman & Duncan’s type lot (Pl. 7, figs 1–8). The cranidia (
|
||
<bibRefCitation id="EFCFA1D0FFA3FFC46F6FE1F1FA9297E5" author="Stitt, J. H. & Perfetta, P. J." box="[1066,1308,1481,1507]" pageId="12" pageNumber="13" pagination="199 - 223" refId="ref24040" refString="Stitt, J. H. & Perfetta, P. J. (2000) Trilobites, biostratigraphy, and lithostratigraphy of the Crepicephalus and Aphelaspis zones, lower Deadwood Formation (Marjuman and Steptoean stages, Upper Cambrian), Black Hills, South Dakota. Journal of Paleontology, 74, 199 - 223. https: // doi. org / 10.1017 / S 0022336000031437" type="journal article" year="2000">Stitt & Perfetta 2000</bibRefCitation>
|
||
, fig. 11.14, 11.15) have noticeably shorter anterior borders than the
|
||
<typeStatus id="54E56283FFA3FFC46856E1D3FCFB9403" box="[787,885,1515,1541]" pageId="12" pageNumber="13" type="holotype">holotype</typeStatus>
|
||
(Pl. 8, figs 3–5) and
|
||
<typeStatus id="54E56283FFA3FFC46F22E1D4FB499400" box="[1127,1223,1516,1542]" pageId="12" pageNumber="13" type="paratype">paratype</typeStatus>
|
||
(Pl. 8, figs 1, 2, 6, 7) cranidia from
|
||
<collectingRegion id="499A12C3FFA3FFC46A11E237FE35942F" box="[340,443,1551,1577]" country="United States of America" name="Montana" pageId="12" pageNumber="13">Montana</collectingRegion>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |