230 lines
28 KiB
XML
230 lines
28 KiB
XML
<document id="E55270F669B0354950E5FD9D70CC0195" 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="03F76D37FFA4FFC46BD2E7C0FB8B93F1" 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 cora Lochman, in Lochman & Duncan 1944" docType="treatment" docVersion="3" 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="12" updateTime="1698776919363" updateUser="plazi">
|
||
<mods:mods id="1A18D32721FD096C071AB08BF23E9B75" xmlns:mods="http://www.loc.gov/mods/v3">
|
||
<mods:titleInfo id="CBFA924F9C2DBD889582BB39105B0D38">
|
||
<mods:title id="002A8DA40BC22A0BE33BA03A8E7AB44D">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>
|
||
</mods:titleInfo>
|
||
<mods:name id="0F0A4F4E950DE265E7E6CBF90918FA5A" type="personal">
|
||
<mods:role id="8EF52385056B88424C6680C1E5C0429D">
|
||
<mods:roleTerm id="FBE596147DBA25B8FAC38E8E85903D06">Author</mods:roleTerm>
|
||
</mods:role>
|
||
<mods:namePart id="3FCD7616477BCF75E4A0E1A0CF479032">Westrop, Madison Armstrong Stephen R.</mods:namePart>
|
||
</mods:name>
|
||
<mods:name id="20C1E801F0521254FD079EEFFD44F1EA" type="personal">
|
||
<mods:role id="633D3E4CD2BBFA077F807A051AE773C9">
|
||
<mods:roleTerm id="203D4940662ED0A423AC2BE3C433001C">Author</mods:roleTerm>
|
||
</mods:role>
|
||
<mods:namePart id="67DE8ED40C1B114DC9E576EC89A4C143">Eoff, Jennifer D.</mods:namePart>
|
||
</mods:name>
|
||
<mods:typeOfResource id="CAC4639292596A3A8296F001D19B73FE">text</mods:typeOfResource>
|
||
<mods:relatedItem id="CD852DE44F0814E88F44D9472FDD7383" type="host">
|
||
<mods:titleInfo id="9AC5355E8CFD3D31218DB73DF2E9A44C">
|
||
<mods:title id="81CC3FC8FB30AA832986ED29164140E9">Zootaxa</mods:title>
|
||
</mods:titleInfo>
|
||
<mods:part id="F0C3E608F4C960867A4599F3DFE0F250">
|
||
<mods:date id="A2E2FB3AC2C076F1E87D22F82E6B8B75">2020</mods:date>
|
||
<mods:detail id="AC3198866B3EFA43CC7B5679E4F1362D" type="pubDate">
|
||
<mods:number id="E5B760813E1141B57DEAD39EF035DD8D">2020-06-30</mods:number>
|
||
</mods:detail>
|
||
<mods:detail id="FE2A553F1101C89AF528723818D02860" type="volume">
|
||
<mods:number id="1C802C4A09CC43ECBB1BB8C234C36466">4804</mods:number>
|
||
</mods:detail>
|
||
<mods:detail id="92FB642DE7135EDFB5C80B40522E595A" type="issue">
|
||
<mods:number id="9A847F4EF48343952D1B220324411914">1</mods:number>
|
||
</mods:detail>
|
||
<mods:extent id="6F7BB03D3A03D76698AF836B52B5883A" unit="page">
|
||
<mods:start id="7244F3B700B85C48647230374B4D893C">1</mods:start>
|
||
<mods:end id="1F400CFC7C16FB4BDF7D6DF9DC3069B9">79</mods:end>
|
||
</mods:extent>
|
||
</mods:part>
|
||
</mods:relatedItem>
|
||
<mods:classification id="CAF9194A40629646F5829FB12D227068">journal article</mods:classification>
|
||
<mods:identifier id="10A57781335C2111289C68BBA4EA302E" type="DOI">10.11646/zootaxa.4804.1.1</mods:identifier>
|
||
<mods:identifier id="CA5E9158CEDDACF57E6FEA85E76C9302" type="ISSN">1175-5326</mods:identifier>
|
||
<mods:identifier id="3B9CAB9EE0C14333B8D7C9B9604065BB" type="Zenodo-Dep">3927094</mods:identifier>
|
||
<mods:identifier id="CFD7436E6E52A5BE3FA1CBD6BCD68BF4" type="ZooBank">8C1C1703-9BBC-4B33-8045-78BDD9738F51</mods:identifier>
|
||
</mods:mods>
|
||
<treatment id="03F76D37FFA4FFC46BD2E7C0FB8B93F1" LSID="urn:lsid:plazi:treatment:03F76D37FFA4FFC46BD2E7C0FB8B93F1" httpUri="http://treatment.plazi.org/id/03F76D37FFA4FFC46BD2E7C0FB8B93F1" lastPageId="12" lastPageNumber="13" pageId="11" pageNumber="12">
|
||
<subSubSection id="C3448FAAFFA4FFC36BD2E7C0FCBB9614" box="[151,821,1016,1043]" pageId="11" pageNumber="12" type="nomenclature">
|
||
<paragraph id="8BE1DC21FFA4FFC36BD2E7C0FCBB9614" blockId="11.[151,821,1016,1079]" box="[151,821,1016,1043]" pageId="11" pageNumber="12">
|
||
<heading id="D0A96B4DFFA4FFC36BD2E7C0FCBB9614" bold="true" box="[151,821,1016,1043]" fontSize="11" level="1" pageId="11" pageNumber="12" reason="1">
|
||
<taxonomicName id="4C5EA7A2FFA4FFC36BD2E7C0FCBB9614" authority="Lochman, in Lochman & Duncan, 1944" authorityName="Lochman, in Lochman & Duncan" authorityYear="1944" box="[151,821,1016,1043]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="cora">
|
||
<emphasis id="B92A0033FFA4FFC36BD2E7C0FCBB9614" bold="true" box="[151,821,1016,1043]" pageId="11" pageNumber="12">
|
||
<emphasis id="B92A0033FFA4FFC36BD2E7C0FEB09615" bold="true" box="[151,318,1016,1043]" italics="true" pageId="11" pageNumber="12">Blountia cora</emphasis>
|
||
Lochman, in
|
||
<bibRefCitation id="EFCFA1D0FFA4FFC36AAEE7C1FCBB9614" author="Lochman, C. & Duncan, D." box="[491,821,1016,1043]" pageId="11" pageNumber="12" 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>
|
||
</emphasis>
|
||
</taxonomicName>
|
||
</heading>
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C3448FAAFFA4FFC36BD2E024FAEE969E" pageId="11" pageNumber="12" type="description">
|
||
<paragraph id="8BE1DC21FFA4FFC36BD2E024FE4D9631" blockId="11.[151,821,1016,1079]" box="[151,451,1052,1079]" pageId="11" pageNumber="12">
|
||
<figureCitation id="1365C0A4FFA4FFC36BD2E024FF689630" box="[151,230,1052,1078]" captionStart="PLATE 6" captionStartId="36.[151,234,1897,1922]" captionText="PLATE 6. Blountia cora Lochman, in Lochman & Duncan, 1944 from the Pilgrim Formation, Half Moon Pass, Big Snowy Mountains, Montana. 1–3. Cranidium, holotype, USNM 127151, dorsal, lateral and anterior views x13 (illustrated by Lochman & Duncan 1944, pl. 8, figs 7, 8). 4. Cranidium, paratype, USNM 127152, dorsal view, x15 (illustrated by Lochman & Duncan 1944, pl. 8, fig. 11). 5–7. Cranidium, paratype, USNM 127153, anterior, dorsal and lateral views, x14 (previously unillustrated). 8, 9. Pygidium, paratype, USNM 127153, posterior and dorsal views, x20 (previously unillustrated)." pageId="11" pageNumber="12">Plate 6</figureCitation>
|
||
,
|
||
<figureCitation id="1365C0A4FFA4FFC36BB7E024FECF9631" box="[242,321,1052,1079]" 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="11" pageNumber="12">Plate 7</figureCitation>
|
||
, figs 11–14
|
||
</paragraph>
|
||
<paragraph id="8BE1DC21FFA4FFC36BD2E059FC2C967F" blockId="11.[151,1376,1120,1176]" box="[151,930,1120,1145]" pageId="11" pageNumber="12">
|
||
1944
|
||
<taxonomicName id="4C5EA7A2FFA4FFC36B95E059FD34967E" authority="Lochman, in Lochman & Duncan" authorityName="Lochman, in Lochman & Duncan" authorityYear="1944" box="[208,698,1120,1145]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="cora">
|
||
<emphasis id="B92A0033FFA4FFC36B95E059FED2967F" box="[208,348,1121,1145]" italics="true" pageId="11" pageNumber="12">Blountia cora</emphasis>
|
||
Lochman, in Lochman & Duncan
|
||
</taxonomicName>
|
||
, p. 51, pl. 8, figs 7–11.
|
||
</paragraph>
|
||
<paragraph id="8BE1DC21FFA4FFC36BD2E0B8FAEE969E" blockId="11.[151,1376,1120,1176]" box="[151,1376,1151,1176]" pageId="11" pageNumber="12">
|
||
<emphasis id="B92A0033FFA4FFC36BD2E0B8FF339691" box="[151,189,1152,1175]" italics="true" pageId="11" pageNumber="12">non</emphasis>
|
||
2000
|
||
<taxonomicName id="4C5EA7A2FFA4FFC36BB8E047FD699691" authority="Lochman, in Lochman & Duncan" authorityName="Lochman, in Lochman & Duncan" authorityYear="1944" box="[253,743,1151,1176]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="cora">
|
||
<emphasis id="B92A0033FFA4FFC36BB8E047FE069691" box="[253,392,1151,1175]" italics="true" pageId="11" pageNumber="12">Blountia cora</emphasis>
|
||
Lochman, in Lochman & Duncan
|
||
</taxonomicName>
|
||
; Stitt & Perfetta, p. 213, figs 11.6–11.7 [=
|
||
<taxonomicName id="4C5EA7A2FFA4FFC36FD2E047FB609691" authorityName="Walcott" authorityYear="1916" box="[1175,1262,1151,1175]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="11" pageNumber="12" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B92A0033FFA4FFC36FD2E047FB609691" box="[1175,1262,1151,1175]" italics="true" pageId="11" pageNumber="12">Blountia</emphasis>
|
||
</taxonomicName>
|
||
sp. indet.].
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C3448FAAFFA4FFC36BD2E0FDFA8397BE" pageId="11" pageNumber="12" type="diagnosis">
|
||
<paragraph id="8BE1DC21FFA4FFC36BD2E0FDFA8397BE" blockId="11.[151,1437,1221,2040]" pageId="11" pageNumber="12">
|
||
<emphasis id="B92A0033FFA4FFC36BD2E0FDFE9C96E6" bold="true" box="[151,274,1221,1248]" pageId="11" pageNumber="12">Diagnosis.</emphasis>
|
||
Anterior cranidial margin evenly rounded; very long frontal area occupies slightly more than one-third (37%; 35–39) of total cranidial length (shorter in small cranidia; Pl. 7, figs 11–13), roughly equally divided into preglabellar field and gently upturned anterior border; differentiated by shallow border furrow and change in slope. Anterior branches of facial sutures diverge forward. Wide palpebral areas of fixigenae account for about half (48%; 47–49) cranidial width; posterolateral projection deflected sharply backward. Semielliptical pygidium, with length slightly less than two-thirds (63%; 63–64) maximum width (smaller pygidia [e.g., Pl. 6, fig. 9] are relatively short- er), with shallow border furrow. Axis becomes indistinct posteriorly in larger specimens (Pl. 7, fig. 9).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C3448FAAFFA4FFC36B82E1F9FCCA9496" pageId="11" pageNumber="12" type="materials_examined">
|
||
<paragraph id="8BE1DC21FFA4FFC36B82E1F9FE06944E" blockId="11.[151,1437,1221,2040]" pageId="11" pageNumber="12">
|
||
<emphasis id="B92A0033FFA4FFC36B82E1F9FEB897DA" bold="true" box="[199,310,1473,1500]" pageId="11" pageNumber="12">Material.</emphasis>
|
||
<materialsCitation id="3B36D67CFFA4FFC36A78E1FAFE06944E" collectionCode="USNM" county="Pilgrim Formation" location="Big Snowy Mountains" municipality="Half Moon Pass" pageId="11" pageNumber="12" specimenCode="USNM 127151, USNM 127153, USNM 127152" specimenCount="3" stateProvince="Montana" typeStatus="holotype">
|
||
<typeStatus id="54E56283FFA4FFC36A78E1FAFE2B97DA" box="[317,421,1474,1500]" pageId="11" pageNumber="12" type="holotype">Holotype</typeStatus>
|
||
cranidium (
|
||
<specimenCode id="DBF8745AFFA4FFC36969E1FAFD5297DA" box="[556,732,1473,1500]" 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="11" pageNumber="12" type="Museum">USNM 127151</specimenCode>
|
||
, Pl. 6, figs 1–3), three
|
||
<typeStatus id="54E56283FFA4FFC3689DE1FAFBB697DA" box="[984,1080,1474,1500]" pageId="11" pageNumber="12" type="paratype">paratype</typeStatus>
|
||
cranidia (
|
||
<specimenCode id="DBF8745AFFA4FFC36FE2E1FAFAD997DA" box="[1191,1367,1473,1500]" 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="11" pageNumber="12" type="Museum">USNM 127153</specimenCode>
|
||
, Pl. 6, figs 4–7, Pl. 7, figs 11–13) and three
|
||
<typeStatus id="54E56283FFA4FFC36972E1DEFD199406" box="[567,663,1510,1536]" pageId="11" pageNumber="12" type="paratype">paratype</typeStatus>
|
||
pygidia (
|
||
<specimenCode id="DBF8745AFFA4FFC36844E1DEFC3C9406" box="[769,946,1509,1536]" 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="11" pageNumber="12" type="Museum">USNM 127152</specimenCode>
|
||
b, Pl. 7, figs 4–6;
|
||
<specimenCode id="DBF8745AFFA4FFC36F32E1DEFAA89406" box="[1143,1318,1509,1536]" 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="11" pageNumber="12" type="Museum">USNM 127153</specimenCode>
|
||
, Pl. 6, figs 8, 9, Pl. 7, fig. 14) from the
|
||
<collectingCounty id="6280A4ADFFA4FFC36A99E232FD3E9422" box="[476,688,1546,1572]" pageId="11" pageNumber="12">Pilgrim Formation</collectingCounty>
|
||
,
|
||
<collectingMunicipality id="6B85465BFFA4FFC369F9E232FCFA9422" box="[700,884,1546,1572]" pageId="11" pageNumber="12">Half Moon Pass</collectingMunicipality>
|
||
section (
|
||
<bibRefCitation id="EFCFA1D0FFA4FFC3689EE232FA879422" author="Lochman, C. & Duncan, D." box="[987,1289,1546,1572]" pageId="11" pageNumber="12" 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>
|
||
),
|
||
<location id="8E818AFAFFA4FFC36E5BE232FE9C944E" LSID="urn:lsid:plazi:treatment:03F76D37FFA4FFC46BD2E7C0FB8B93F1:8E818AFAFFA4FFC36E5BE232FE9C944E" county="Pilgrim Formation" municipality="Half Moon Pass" name="Big Snowy Mountains" pageId="11" pageNumber="12" stateProvince="Montana">Big Snowy Mountains</location>
|
||
,
|
||
<collectingRegion id="499A12C3FFA4FFC36A58E216FE0A944E" box="[285,388,1582,1608]" country="United States of America" name="Montana" pageId="11" pageNumber="12">Montana</collectingRegion>
|
||
.
|
||
</materialsCitation>
|
||
</paragraph>
|
||
<paragraph id="8BE1DC21FFA4FFC36B82E269FCCA9496" blockId="11.[151,1437,1221,2040]" pageId="11" pageNumber="12">
|
||
<emphasis id="B92A0033FFA4FFC36B82E269FED4946A" bold="true" box="[199,346,1617,1644]" pageId="11" pageNumber="12">Occurrence.</emphasis>
|
||
<taxonomicName id="4C5EA7A2FFA4FFC36A27E26AFC64946A" authority="Zone, Pilgrim Formation, Half Moon Pass" authorityName="Zone, Pilgrim Formation, Half Moon Pass" box="[354,1002,1618,1644]" class="Trilobita" family="Crepicephalidae" genus="Crepicephalus" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="11" pageNumber="12" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B92A0033FFA4FFC36A27E26AFD8A946A" box="[354,516,1618,1644]" italics="true" pageId="11" pageNumber="12">Crepicephalus</emphasis>
|
||
<materialsCitation id="3B36D67CFFA4FFC36949E26AFC64946A" box="[524,1002,1618,1644]" location="Big Snowy Mountains" pageId="11" pageNumber="12" specimenCount="1" stateProvince="Montana">Zone, Pilgrim Formation, Half Moon Pass</materialsCitation>
|
||
</taxonomicName>
|
||
section,
|
||
<bibRefCitation id="EFCFA1D0FFA4FFC36F15E26AFA12946A" author="Lochman, C. & Duncan, D." box="[1104,1436,1618,1644]" pageId="11" pageNumber="12" 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>
|
||
horizons 9.1, 9.1x, and 9.2,
|
||
<location id="8E818AFAFFA4FFC36A8AE24EFD409496" LSID="urn:lsid:plazi:treatment:03F76D37FFA4FFC46BD2E7C0FB8B93F1:8E818AFAFFA4FFC36A8AE24EFD409496" box="[463,718,1654,1680]" name="Big Snowy Mountains" pageId="11" pageNumber="12" stateProvince="Montana">Big Snowy Mountains</location>
|
||
,
|
||
<collectingRegion id="499A12C3FFA4FFC3699CE24EFCCE9496" box="[729,832,1654,1680]" country="United States of America" name="Montana" pageId="11" pageNumber="12">Montana</collectingRegion>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C3448FAAFFA4FFC46B82E2A1FB8B93F1" lastPageId="12" lastPageNumber="13" pageId="11" pageNumber="12" type="discussion">
|
||
<paragraph id="8BE1DC21FFA4FFC36B82E2A1FE3895B6" blockId="11.[151,1437,1221,2040]" pageId="11" pageNumber="12">
|
||
<emphasis id="B92A0033FFA4FFC36B82E2A1FEC294B2" bold="true" box="[199,332,1689,1716]" pageId="11" pageNumber="12">Discussion.</emphasis>
|
||
A cranidium and pygidium from the lower Deadwood Formation of the Black Hills,
|
||
<collectingRegion id="499A12C3FFA4FFC36FB8E2A2FA1694B2" box="[1277,1432,1690,1716]" country="United States of America" name="North Dakota" pageId="11" pageNumber="12">North Dakota</collectingRegion>
|
||
, were illustrated as
|
||
<taxonomicName id="4C5EA7A2FFA4FFC36A2FE286FD8A94DE" authorityName="Lochman, in Lochman & Duncan" authorityYear="1944" box="[362,516,1726,1752]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="cora">
|
||
<emphasis id="B92A0033FFA4FFC36A2FE286FD8A94DE" box="[362,516,1726,1752]" italics="true" pageId="11" pageNumber="12">Blountia cora</emphasis>
|
||
</taxonomicName>
|
||
by
|
||
<bibRefCitation id="EFCFA1D0FFA4FFC3696BE286FCBB94DE" author="Stitt, J. H. & Perfetta, P. J." box="[558,821,1726,1752]" pageId="11" pageNumber="12" 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>
|
||
, fig. 11.6, 11.7), but are almost certainly misidentified. The cranidium is too poorly preserved and illustrated for a comprehensive evaluation but appears to have an anterior border that is noticeably shorter than the preglabellar field, whereas they are subequal in length in the
|
||
<typeStatus id="54E56283FFA4FFC36E64E33EFAD29526" box="[1313,1372,1798,1824]" pageId="11" pageNumber="12">types</typeStatus>
|
||
of
|
||
<taxonomicName id="4C5EA7A2FFA4FFC36EC1E33FFF449542" authorityName="Lochman, in Lochman & Duncan" authorityYear="1944" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="cora">
|
||
<emphasis id="B92A0033FFA4FFC36EC1E33FFA1B9526" box="[1412,1429,1799,1824]" italics="true" pageId="11" pageNumber="12">B</emphasis>
|
||
.
|
||
<emphasis id="B92A0033FFA4FFC36BD2E313FF449542" box="[151,202,1835,1860]" italics="true" pageId="11" pageNumber="12">cora</emphasis>
|
||
</taxonomicName>
|
||
(Pl. 6, figs 1–7). In addition, the anterior branches of the facial sutures of this specimen appear to be subparallel, rather than conspicuously divergent, as in the
|
||
<typeStatus id="54E56283FFA4FFC3698DE376FC89956E" box="[712,775,1870,1896]" pageId="11" pageNumber="12">types</typeStatus>
|
||
. The pygidium from the Deadwood Formation is narrower than any of the
|
||
<typeStatus id="54E56283FFA4FFC36A00E34AFE0E958A" box="[325,384,1906,1932]" pageId="11" pageNumber="12">types</typeStatus>
|
||
(Pl. 6, figs 8, 9; Pl. 7, figs 8, 9, 14) but, because it is illustrated in dorsal view only, additional comparisons are difficult.
|
||
</paragraph>
|
||
<paragraph id="8BE1DC21FFA4FFC46B82E382FB1E938D" blockId="11.[151,1437,1221,2040]" lastBlockId="12.[151,1437,152,503]" lastPageId="12" lastPageNumber="13" pageId="11" pageNumber="12">
|
||
Cranidia of
|
||
<taxonomicName id="4C5EA7A2FFA4FFC36A08E383FE2E95D2" authorityName="Lochman, in Lochman & Duncan" authorityYear="1944" box="[333,416,1978,2004]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="cora">
|
||
<emphasis id="B92A0033FFA4FFC36A08E383FED095D2" box="[333,350,1979,2004]" italics="true" pageId="11" pageNumber="12">B</emphasis>
|
||
.
|
||
<emphasis id="B92A0033FFA4FFC36A28E383FE2E95D2" box="[365,416,1979,2004]" italics="true" pageId="11" pageNumber="12">cora</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="4C5EA7A2FFA4FFC36A92E383FDC195D2" authorityName="Westrop & Eoff" authorityYear="2020" box="[471,591,1978,2004]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="angelae">
|
||
<emphasis id="B92A0033FFA4FFC36A92E383FE6695D2" box="[471,488,1979,2004]" italics="true" pageId="11" pageNumber="12">B</emphasis>
|
||
.
|
||
<emphasis id="B92A0033FFA4FFC36AB3E382FDC195D2" box="[502,591,1978,2004]" italics="true" pageId="11" pageNumber="12">angelae</emphasis>
|
||
</taxonomicName>
|
||
share an evenly rounded anterior margin, long frontal area, subtrapezoidal, anteriorly-rounded glabella, wide palpebral areas of the fixigenae, and posterolateral projections are deflected pos- teriorly with expansion of the posterior border (e.g., compare Pl. 8, figs 1–3 and Pl. 15, figs 1–3). They differ in frontal area proportions, with a shorter preglabellar field in the latter that occupies 37% of frontal area length, versus 43% in
|
||
<taxonomicName id="4C5EA7A2FFA3FFC46BA9E4DAFEB392FD" authorityName="Lochman, in Lochman & Duncan" authorityYear="1944" box="[236,317,225,251]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="12" pageNumber="13" phylum="Arthropoda" rank="species" species="cora">
|
||
<emphasis id="B92A0033FFA3FFC46BA9E4DAFF7392FD" box="[236,253,226,251]" italics="true" pageId="12" pageNumber="13">B</emphasis>
|
||
.
|
||
<emphasis id="B92A0033FFA3FFC46A4FE4DAFEB392FD" box="[266,317,226,251]" italics="true" pageId="12" pageNumber="13">cora</emphasis>
|
||
</taxonomicName>
|
||
. Pygidia are clearly differentiated in the expression of the border and pygidial axis, both of which are well defined in
|
||
<taxonomicName id="4C5EA7A2FFA3FFC46A02E53EFE319319" authorityName="Westrop & Eoff" authorityYear="2020" box="[327,447,261,287]" 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="B92A0033FFA3FFC46A02E53EFED69319" box="[327,344,262,287]" italics="true" pageId="12" pageNumber="13">B</emphasis>
|
||
.
|
||
<emphasis id="B92A0033FFA3FFC46A23E53DFE319319" box="[358,447,261,287]" italics="true" pageId="12" pageNumber="13">angelae</emphasis>
|
||
</taxonomicName>
|
||
(e.g. Pl. 15, fig. 6). In contrast, the border furrow of
|
||
<taxonomicName id="4C5EA7A2FFA3FFC46F56E53EFBE89319" authorityName="Lochman, in Lochman & Duncan" authorityYear="1944" box="[1043,1126,261,287]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="12" pageNumber="13" phylum="Arthropoda" rank="species" species="cora">
|
||
<emphasis id="B92A0033FFA3FFC46F56E53EFBAA9319" box="[1043,1060,262,287]" italics="true" pageId="12" pageNumber="13">B</emphasis>
|
||
.
|
||
<emphasis id="B92A0033FFA3FFC46F76E53EFBE89319" box="[1075,1126,262,287]" italics="true" pageId="12" pageNumber="13">cora</emphasis>
|
||
</taxonomicName>
|
||
is weak to entirely effaced, and the axis becomes indistinct posteriorly during holaspid ontogeny (Pl. 6, figs 8, 9, Pl. 7, figs 9, 10, 14). Moreover, the largest available pygidia of
|
||
<taxonomicName id="4C5EA7A2FFA3FFC46AB7E576FDCA9361" authorityName="Lochman, in Lochman & Duncan" authorityYear="1944" box="[498,580,333,359]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="12" pageNumber="13" phylum="Arthropoda" rank="species" species="cora">
|
||
<emphasis id="B92A0033FFA3FFC46AB7E576FD8D9361" box="[498,515,334,359]" italics="true" pageId="12" pageNumber="13">B</emphasis>
|
||
.
|
||
<emphasis id="B92A0033FFA3FFC46954E576FDCA9361" box="[529,580,334,359]" italics="true" pageId="12" pageNumber="13">cora</emphasis>
|
||
</taxonomicName>
|
||
(Pl. 7, fig. 9, 10) is about half the size of the well-furrowed pygidium (Pl. 15, fig. 6) of
|
||
<taxonomicName id="4C5EA7A2FFA3FFC46A44E54AFEF7938D" authorityName="Westrop & Eoff" authorityYear="2020" box="[257,377,369,395]" 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="B92A0033FFA3FFC46A44E54AFE9C938D" box="[257,274,370,395]" italics="true" pageId="12" pageNumber="13">B</emphasis>
|
||
.
|
||
<emphasis id="B92A0033FFA3FFC46A65E549FEF7938D" box="[288,377,369,395]" italics="true" pageId="12" pageNumber="13">angelae</emphasis>
|
||
</taxonomicName>
|
||
, indicating that effacement occurs early in the ontogeny of the former.
|
||
</paragraph>
|
||
<paragraph id="8BE1DC21FFA3FFC46B82E5ADFB8B93F1" blockId="12.[151,1437,152,503]" pageId="12" pageNumber="13">
|
||
Cranidia of
|
||
<taxonomicName id="4C5EA7A2FFA3FFC46A0BE5AEFDD493A9" authority="Walcott, 1916" authorityName="Walcott" authorityYear="1916" box="[334,602,405,431]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="12" pageNumber="13" phylum="Arthropoda" rank="species" species="alexas">
|
||
<emphasis id="B92A0033FFA3FFC46A0BE5AEFE3893A9" box="[334,438,405,431]" italics="true" pageId="12" pageNumber="13">B. alexas</emphasis>
|
||
Walcott, 1916
|
||
</taxonomicName>
|
||
(
|
||
<bibRefCitation id="EFCFA1D0FFA3FFC4692CE5ADFD7593A9" author="Rasetti, F." box="[617,763,404,431]" pageId="12" pageNumber="13" pagination="1 - 127" refId="ref23892" refString="Rasetti, F. (1965) Upper Cambrian trilobite faunas of Northeastern Tennessee. Smithsonian Miscellaneous Collections, 148, 1 - 127." type="journal article" year="1965">Rasetti 1965</bibRefCitation>
|
||
, pl. 9, figs 9–12), from the Nolichucky Formation of northeastern
|
||
<collectingRegion id="499A12C3FFA3FFC46BA8E581FEED93D5" box="[237,355,441,467]" country="United States of America" name="Tennessee" pageId="12" pageNumber="13">Tennessee</collectingRegion>
|
||
, have backwardly swept posterolateral projections that resemble the condition in
|
||
<taxonomicName id="4C5EA7A2FFA3FFC46FAAE582FACF93D5" authorityName="Lochman, in Lochman & Duncan" authorityYear="1944" box="[1263,1345,441,467]" class="Trilobita" family="Kingstoniidae" genus="Blountia" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Ptychopariida" pageId="12" pageNumber="13" phylum="Arthropoda" rank="species" species="cora">
|
||
<emphasis id="B92A0033FFA3FFC46FAAE582FA8E93D5" box="[1263,1280,442,467]" italics="true" pageId="12" pageNumber="13">B</emphasis>
|
||
.
|
||
<emphasis id="B92A0033FFA3FFC46E4BE582FACF93D5" box="[1294,1345,442,467]" italics="true" pageId="12" pageNumber="13">cora</emphasis>
|
||
</taxonomicName>
|
||
, but the frontal area is much shorter, and the palpebral area of the fixigena is narrower.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |