VIRGIANID BRACHIOPODS OF THE MICHIGAN BASIN, AND ITS IMPLICATIONS FOR POST-EXTINCTION DIVERSIFICATION OF THE SILURIAN PENTAMERIDE FAUNA IN LAURENTIA
Three virgianid genera are present in the Michigan Basin. The oldest, Virgiana mayvillensis Savage from the Mayville Dolomite, is upper Rhuddanian in age and coeval with the same species on Anticosti Island in eastern Canada. “Virgiana” major Savage, 1916, from the uppermost Lime Island (uppermost R...
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ftunivmilriv:oai:ojs.riviste.unimi.it:article/12168 2023-05-15T16:35:28+02:00 VIRGIANID BRACHIOPODS OF THE MICHIGAN BASIN, AND ITS IMPLICATIONS FOR POST-EXTINCTION DIVERSIFICATION OF THE SILURIAN PENTAMERIDE FAUNA IN LAURENTIA JIN, JISUO MIKULIC, DONALD KLUESSENDORF, JOANNE 2019-09-11 application/pdf https://riviste.unimi.it/index.php/RIPS/article/view/12168 https://doi.org/10.13130/2039-4942/12168 eng eng Università degli Studi di Milano https://riviste.unimi.it/index.php/RIPS/article/view/12168/11327 https://riviste.unimi.it/index.php/RIPS/article/view/12168 doi:10.13130/2039-4942/12168 Copyright (c) 2019 JISUO JIN, DONALD MIKULIC, JOANNE KLUESSENDORF RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA Vol. 125 No. 3 (2019): Proceedings of the 8th International Brachiopod Congress Rivista italiana di Paleontologia e Stratigrafia; V. 125 N. 3 (2019): Proceedings of the 8th International Brachiopod Congress 2039-4942 0035-6883 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2019 ftunivmilriv https://doi.org/10.13130/2039-4942/12168 2022-02-21T07:13:29Z Three virgianid genera are present in the Michigan Basin. The oldest, Virgiana mayvillensis Savage from the Mayville Dolomite, is upper Rhuddanian in age and coeval with the same species on Anticosti Island in eastern Canada. “Virgiana” major Savage, 1916, from the uppermost Lime Island (uppermost Rhuddanian), has an incipient cruralium supported anteriorly by a low median ridge, for which Virgianoides gen. nov. is proposed in this study. Platymerella in the Elwood Formation (uppermost Rhuddanian) was the most southerly virgianid occurrence in the American mid-continent. The early evolution of the Brevilamnulella-Viridita-Virgiana lineage was represented by the early-middle Rhuddanian fossil record of Anticosti Island. Available fossil data indicate that the Virgiana invasion into intracratonic basins did not begin until late Rhuddanian time, represented by the excellent record of V. mayvillensis in the Michigan Basin, and V. decussata in the Hudson Bay and Williston basins. Despite its late arrival, virgianids thrived for a somewhat longer geological time in the Michigan Basin, represented by Virgianoides and Platymerella in the latest Rhuddanian, when virgianids largely became extinct in other basins of Laurentia. Article in Journal/Newspaper Hudson Bay University of Milan: Riviste UNIMI Canada Hudson Hudson Bay Median Ridge ENVELOPE(-62.833,-62.833,-64.983,-64.983) |
institution |
Open Polar |
collection |
University of Milan: Riviste UNIMI |
op_collection_id |
ftunivmilriv |
language |
English |
description |
Three virgianid genera are present in the Michigan Basin. The oldest, Virgiana mayvillensis Savage from the Mayville Dolomite, is upper Rhuddanian in age and coeval with the same species on Anticosti Island in eastern Canada. “Virgiana” major Savage, 1916, from the uppermost Lime Island (uppermost Rhuddanian), has an incipient cruralium supported anteriorly by a low median ridge, for which Virgianoides gen. nov. is proposed in this study. Platymerella in the Elwood Formation (uppermost Rhuddanian) was the most southerly virgianid occurrence in the American mid-continent. The early evolution of the Brevilamnulella-Viridita-Virgiana lineage was represented by the early-middle Rhuddanian fossil record of Anticosti Island. Available fossil data indicate that the Virgiana invasion into intracratonic basins did not begin until late Rhuddanian time, represented by the excellent record of V. mayvillensis in the Michigan Basin, and V. decussata in the Hudson Bay and Williston basins. Despite its late arrival, virgianids thrived for a somewhat longer geological time in the Michigan Basin, represented by Virgianoides and Platymerella in the latest Rhuddanian, when virgianids largely became extinct in other basins of Laurentia. |
format |
Article in Journal/Newspaper |
author |
JIN, JISUO MIKULIC, DONALD KLUESSENDORF, JOANNE |
spellingShingle |
JIN, JISUO MIKULIC, DONALD KLUESSENDORF, JOANNE VIRGIANID BRACHIOPODS OF THE MICHIGAN BASIN, AND ITS IMPLICATIONS FOR POST-EXTINCTION DIVERSIFICATION OF THE SILURIAN PENTAMERIDE FAUNA IN LAURENTIA |
author_facet |
JIN, JISUO MIKULIC, DONALD KLUESSENDORF, JOANNE |
author_sort |
JIN, JISUO |
title |
VIRGIANID BRACHIOPODS OF THE MICHIGAN BASIN, AND ITS IMPLICATIONS FOR POST-EXTINCTION DIVERSIFICATION OF THE SILURIAN PENTAMERIDE FAUNA IN LAURENTIA |
title_short |
VIRGIANID BRACHIOPODS OF THE MICHIGAN BASIN, AND ITS IMPLICATIONS FOR POST-EXTINCTION DIVERSIFICATION OF THE SILURIAN PENTAMERIDE FAUNA IN LAURENTIA |
title_full |
VIRGIANID BRACHIOPODS OF THE MICHIGAN BASIN, AND ITS IMPLICATIONS FOR POST-EXTINCTION DIVERSIFICATION OF THE SILURIAN PENTAMERIDE FAUNA IN LAURENTIA |
title_fullStr |
VIRGIANID BRACHIOPODS OF THE MICHIGAN BASIN, AND ITS IMPLICATIONS FOR POST-EXTINCTION DIVERSIFICATION OF THE SILURIAN PENTAMERIDE FAUNA IN LAURENTIA |
title_full_unstemmed |
VIRGIANID BRACHIOPODS OF THE MICHIGAN BASIN, AND ITS IMPLICATIONS FOR POST-EXTINCTION DIVERSIFICATION OF THE SILURIAN PENTAMERIDE FAUNA IN LAURENTIA |
title_sort |
virgianid brachiopods of the michigan basin, and its implications for post-extinction diversification of the silurian pentameride fauna in laurentia |
publisher |
Università degli Studi di Milano |
publishDate |
2019 |
url |
https://riviste.unimi.it/index.php/RIPS/article/view/12168 https://doi.org/10.13130/2039-4942/12168 |
long_lat |
ENVELOPE(-62.833,-62.833,-64.983,-64.983) |
geographic |
Canada Hudson Hudson Bay Median Ridge |
geographic_facet |
Canada Hudson Hudson Bay Median Ridge |
genre |
Hudson Bay |
genre_facet |
Hudson Bay |
op_source |
RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA Vol. 125 No. 3 (2019): Proceedings of the 8th International Brachiopod Congress Rivista italiana di Paleontologia e Stratigrafia; V. 125 N. 3 (2019): Proceedings of the 8th International Brachiopod Congress 2039-4942 0035-6883 |
op_relation |
https://riviste.unimi.it/index.php/RIPS/article/view/12168/11327 https://riviste.unimi.it/index.php/RIPS/article/view/12168 doi:10.13130/2039-4942/12168 |
op_rights |
Copyright (c) 2019 JISUO JIN, DONALD MIKULIC, JOANNE KLUESSENDORF |
op_doi |
https://doi.org/10.13130/2039-4942/12168 |
_version_ |
1766025685583790080 |