The Cretaceous and Paleocene pleurotomariid (Gastropoda: Vetigastropoda) fauna of Seymour Island, Antarctica
Leptomaria antipodensis and Leptomaria hickmanae are described from the Upper Cretaceous [Maastrichtian] Lopez de Bertodano Formation, Seymour Island, and represent the first Mesozoic records of the family Pleurotomariidae from Antarctica. Leptomaria stillwelli, L. seymourensis, Conotomaria sobralen...
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crcambridgeupr:10.1666/09-004.1 2024-03-17T08:53:27+00:00 The Cretaceous and Paleocene pleurotomariid (Gastropoda: Vetigastropoda) fauna of Seymour Island, Antarctica Harasewych, M. G. Oleinik, Anton Zinsmeister, William 2009 http://dx.doi.org/10.1666/09-004.1 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022336000052641 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of Paleontology volume 83, issue 5, page 750-766 ISSN 0022-3360 1937-2337 Paleontology journal-article 2009 crcambridgeupr https://doi.org/10.1666/09-004.1 2024-02-20T00:03:37Z Leptomaria antipodensis and Leptomaria hickmanae are described from the Upper Cretaceous [Maastrichtian] Lopez de Bertodano Formation, Seymour Island, and represent the first Mesozoic records of the family Pleurotomariidae from Antarctica. Leptomaria stillwelli, L. seymourensis, Conotomaria sobralensis and C . bayeri, from the Paleocene [Danian], Sobral Formation, Seymour Island, are described as new. Leptomaria larseniana (Wilckens, 1911) new combination, also from the Sobral Formation, is redescribed based on better-preserved material. The limited diversity of the pleurotomariid fauna of Seymour Island is more similar to that of the Late Cretaceous faunas of Australia and New Zealand in terms of the number of genera and species, than to the older, more diverse faunas of South America, southern India, or northwestern Madagascar, supporting the status of the Weddelian Province as a distinct biogeographic unit. The increase in the species richness of this fauna during the Danian may be due to the final fragmentation of Gondwana during this period. Article in Journal/Newspaper Antarc* Antarctica Seymour Island Cambridge University Press New Zealand Seymour ENVELOPE(-56.767,-56.767,-64.283,-64.283) Seymour Island ENVELOPE(-56.750,-56.750,-64.283,-64.283) Lopez ENVELOPE(-63.567,-63.567,-64.850,-64.850) Sobral ENVELOPE(-40.650,-40.650,-81.083,-81.083) Lopez de Bertodano ENVELOPE(-56.719,-56.719,-64.236,-64.236) Journal of Paleontology 83 5 750 766 |
institution |
Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Paleontology |
spellingShingle |
Paleontology Harasewych, M. G. Oleinik, Anton Zinsmeister, William The Cretaceous and Paleocene pleurotomariid (Gastropoda: Vetigastropoda) fauna of Seymour Island, Antarctica |
topic_facet |
Paleontology |
description |
Leptomaria antipodensis and Leptomaria hickmanae are described from the Upper Cretaceous [Maastrichtian] Lopez de Bertodano Formation, Seymour Island, and represent the first Mesozoic records of the family Pleurotomariidae from Antarctica. Leptomaria stillwelli, L. seymourensis, Conotomaria sobralensis and C . bayeri, from the Paleocene [Danian], Sobral Formation, Seymour Island, are described as new. Leptomaria larseniana (Wilckens, 1911) new combination, also from the Sobral Formation, is redescribed based on better-preserved material. The limited diversity of the pleurotomariid fauna of Seymour Island is more similar to that of the Late Cretaceous faunas of Australia and New Zealand in terms of the number of genera and species, than to the older, more diverse faunas of South America, southern India, or northwestern Madagascar, supporting the status of the Weddelian Province as a distinct biogeographic unit. The increase in the species richness of this fauna during the Danian may be due to the final fragmentation of Gondwana during this period. |
format |
Article in Journal/Newspaper |
author |
Harasewych, M. G. Oleinik, Anton Zinsmeister, William |
author_facet |
Harasewych, M. G. Oleinik, Anton Zinsmeister, William |
author_sort |
Harasewych, M. G. |
title |
The Cretaceous and Paleocene pleurotomariid (Gastropoda: Vetigastropoda) fauna of Seymour Island, Antarctica |
title_short |
The Cretaceous and Paleocene pleurotomariid (Gastropoda: Vetigastropoda) fauna of Seymour Island, Antarctica |
title_full |
The Cretaceous and Paleocene pleurotomariid (Gastropoda: Vetigastropoda) fauna of Seymour Island, Antarctica |
title_fullStr |
The Cretaceous and Paleocene pleurotomariid (Gastropoda: Vetigastropoda) fauna of Seymour Island, Antarctica |
title_full_unstemmed |
The Cretaceous and Paleocene pleurotomariid (Gastropoda: Vetigastropoda) fauna of Seymour Island, Antarctica |
title_sort |
cretaceous and paleocene pleurotomariid (gastropoda: vetigastropoda) fauna of seymour island, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
2009 |
url |
http://dx.doi.org/10.1666/09-004.1 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022336000052641 |
long_lat |
ENVELOPE(-56.767,-56.767,-64.283,-64.283) ENVELOPE(-56.750,-56.750,-64.283,-64.283) ENVELOPE(-63.567,-63.567,-64.850,-64.850) ENVELOPE(-40.650,-40.650,-81.083,-81.083) ENVELOPE(-56.719,-56.719,-64.236,-64.236) |
geographic |
New Zealand Seymour Seymour Island Lopez Sobral Lopez de Bertodano |
geographic_facet |
New Zealand Seymour Seymour Island Lopez Sobral Lopez de Bertodano |
genre |
Antarc* Antarctica Seymour Island |
genre_facet |
Antarc* Antarctica Seymour Island |
op_source |
Journal of Paleontology volume 83, issue 5, page 750-766 ISSN 0022-3360 1937-2337 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1666/09-004.1 |
container_title |
Journal of Paleontology |
container_volume |
83 |
container_issue |
5 |
container_start_page |
750 |
op_container_end_page |
766 |
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1793765236521566208 |