Late Ordovician brachiopods from east-central Alaska, northwestern margin of Laurentia
A Late Ordovician brachiopod fauna from the Black River quadrangle (D-1 1:63,360 scale) of east-central Alaska comprises taxa typical of the Late Ordovician brachiopod fauna in the pericratonic epeiric seas of Laurentia, including Hesperorthis pyramidalis (Twenhofel, 1928), Plaesiomys occidentalis (...
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The Paleontological Society
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ftbioone:10.1017/jpa.2020.10 2024-06-02T08:10:14+00:00 Late Ordovician brachiopods from east-central Alaska, northwestern margin of Laurentia Jisuo Jin Robert B. Blodgett Jisuo Jin Robert B. Blodgett world 2020-07-15 text/HTML https://doi.org/10.1017/jpa.2020.10 en eng The Paleontological Society doi:10.1017/jpa.2020.10 All rights reserved. https://doi.org/10.1017/jpa.2020.10 Text 2020 ftbioone https://doi.org/10.1017/jpa.2020.10 2024-05-07T00:47:45Z A Late Ordovician brachiopod fauna from the Black River quadrangle (D-1 1:63,360 scale) of east-central Alaska comprises taxa typical of the Late Ordovician brachiopod fauna in the pericratonic epeiric seas of Laurentia, including Hesperorthis pyramidalis (Twenhofel, 1928), Plaesiomys occidentalis (Okulitch, 1943), Eoplectodonta sp., Holtehdalina sp., Leptaena sp., Brevilamnulella minuta n. sp., Tcherskidium tenuicostatum n. sp., Rhynchotrema iowenseWang, 1949, and Whitfieldella sp. The presence of Plaesiomys occidentalis and Tcherskidium tenuicostata n. sp. indicates a latest Katian age by correlation with similar species in the Mackenzie Mountains, southern Manitoba, Anticosti Island, the American midcontinent, Kolyma, and Siberia. Cluster analysis based on 20 well-studied late Katian brachiopod faunas from various regions within Laurentia and elsewhere in other tectonic plates suggests that the small brachiopod faunule from Alaska has the strongest paleobiogeographic affinity with Laurentia, confirming that the Black River quadrangle of Alaska was part of Laurentia during the Late Ordovician. Text Mackenzie mountains Alaska Siberia BioOne Online Journals Kolyma ENVELOPE(161.000,161.000,69.500,69.500) Quadrangle ENVELOPE(-68.578,-68.578,-71.577,-71.577) Journal of Paleontology 94 4 637 652 |
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Open Polar |
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BioOne Online Journals |
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ftbioone |
language |
English |
description |
A Late Ordovician brachiopod fauna from the Black River quadrangle (D-1 1:63,360 scale) of east-central Alaska comprises taxa typical of the Late Ordovician brachiopod fauna in the pericratonic epeiric seas of Laurentia, including Hesperorthis pyramidalis (Twenhofel, 1928), Plaesiomys occidentalis (Okulitch, 1943), Eoplectodonta sp., Holtehdalina sp., Leptaena sp., Brevilamnulella minuta n. sp., Tcherskidium tenuicostatum n. sp., Rhynchotrema iowenseWang, 1949, and Whitfieldella sp. The presence of Plaesiomys occidentalis and Tcherskidium tenuicostata n. sp. indicates a latest Katian age by correlation with similar species in the Mackenzie Mountains, southern Manitoba, Anticosti Island, the American midcontinent, Kolyma, and Siberia. Cluster analysis based on 20 well-studied late Katian brachiopod faunas from various regions within Laurentia and elsewhere in other tectonic plates suggests that the small brachiopod faunule from Alaska has the strongest paleobiogeographic affinity with Laurentia, confirming that the Black River quadrangle of Alaska was part of Laurentia during the Late Ordovician. |
author2 |
Jisuo Jin Robert B. Blodgett |
format |
Text |
author |
Jisuo Jin Robert B. Blodgett |
spellingShingle |
Jisuo Jin Robert B. Blodgett Late Ordovician brachiopods from east-central Alaska, northwestern margin of Laurentia |
author_facet |
Jisuo Jin Robert B. Blodgett |
author_sort |
Jisuo Jin |
title |
Late Ordovician brachiopods from east-central Alaska, northwestern margin of Laurentia |
title_short |
Late Ordovician brachiopods from east-central Alaska, northwestern margin of Laurentia |
title_full |
Late Ordovician brachiopods from east-central Alaska, northwestern margin of Laurentia |
title_fullStr |
Late Ordovician brachiopods from east-central Alaska, northwestern margin of Laurentia |
title_full_unstemmed |
Late Ordovician brachiopods from east-central Alaska, northwestern margin of Laurentia |
title_sort |
late ordovician brachiopods from east-central alaska, northwestern margin of laurentia |
publisher |
The Paleontological Society |
publishDate |
2020 |
url |
https://doi.org/10.1017/jpa.2020.10 |
op_coverage |
world |
long_lat |
ENVELOPE(161.000,161.000,69.500,69.500) ENVELOPE(-68.578,-68.578,-71.577,-71.577) |
geographic |
Kolyma Quadrangle |
geographic_facet |
Kolyma Quadrangle |
genre |
Mackenzie mountains Alaska Siberia |
genre_facet |
Mackenzie mountains Alaska Siberia |
op_source |
https://doi.org/10.1017/jpa.2020.10 |
op_relation |
doi:10.1017/jpa.2020.10 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1017/jpa.2020.10 |
container_title |
Journal of Paleontology |
container_volume |
94 |
container_issue |
4 |
container_start_page |
637 |
op_container_end_page |
652 |
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1800756056255627264 |