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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ftsmithonian:oai:repository.si.edu:10088/8158 2023-05-15T13:50:43+02:00 The cretaceous and paleocene Pleurotomariid (Gastropoda: Vetigastropoda) fauna of Seymour Island, Antarctica Harasewych, M. G. Oleinik, Anton Zinsmeister, W. J. 2009 17452536 bytes application/pdf http://hdl.handle.net/10088/8158 https://doi.org/10.1666/09-004.1 en_US eng Journal of Paleontology Harasewych, M. G., Oleinik, Anton, and Zinsmeister, W. J. 2009. " The cretaceous and paleocene Pleurotomariid (Gastropoda: Vetigastropoda) fauna of Seymour Island, Antarctica ." Journal of Paleontology . 83 (5):750–766. https://doi.org/10.1666/09-004.1 0022-3360 http://hdl.handle.net/10088/8158 79999 doi:10.1666/09-004.1 Journal Article 2009 ftsmithonian https://doi.org/10.1666/09-004.1 2020-09-09T18:30:42Z 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. NMNH NH-Invertebrate Zoology Article in Journal/Newspaper Antarc* Antarctica Antarctica Journal Seymour Island Unknown Lopez ENVELOPE(-63.567,-63.567,-64.850,-64.850) Lopez de Bertodano ENVELOPE(-56.719,-56.719,-64.236,-64.236) New Zealand Seymour ENVELOPE(-56.767,-56.767,-64.283,-64.283) Seymour Island ENVELOPE(-56.750,-56.750,-64.283,-64.283) Sobral ENVELOPE(-40.650,-40.650,-81.083,-81.083) Journal of Paleontology 83 5 750 766 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftsmithonian |
language |
English |
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. NMNH NH-Invertebrate Zoology |
format |
Article in Journal/Newspaper |
author |
Harasewych, M. G. Oleinik, Anton Zinsmeister, W. J. |
spellingShingle |
Harasewych, M. G. Oleinik, Anton Zinsmeister, W. J. The cretaceous and paleocene Pleurotomariid (Gastropoda: Vetigastropoda) fauna of Seymour Island, Antarctica |
author_facet |
Harasewych, M. G. Oleinik, Anton Zinsmeister, W. J. |
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 |
publishDate |
2009 |
url |
http://hdl.handle.net/10088/8158 https://doi.org/10.1666/09-004.1 |
long_lat |
ENVELOPE(-63.567,-63.567,-64.850,-64.850) ENVELOPE(-56.719,-56.719,-64.236,-64.236) ENVELOPE(-56.767,-56.767,-64.283,-64.283) ENVELOPE(-56.750,-56.750,-64.283,-64.283) ENVELOPE(-40.650,-40.650,-81.083,-81.083) |
geographic |
Lopez Lopez de Bertodano New Zealand Seymour Seymour Island Sobral |
geographic_facet |
Lopez Lopez de Bertodano New Zealand Seymour Seymour Island Sobral |
genre |
Antarc* Antarctica Antarctica Journal Seymour Island |
genre_facet |
Antarc* Antarctica Antarctica Journal Seymour Island |
op_relation |
Journal of Paleontology Harasewych, M. G., Oleinik, Anton, and Zinsmeister, W. J. 2009. " The cretaceous and paleocene Pleurotomariid (Gastropoda: Vetigastropoda) fauna of Seymour Island, Antarctica ." Journal of Paleontology . 83 (5):750–766. https://doi.org/10.1666/09-004.1 0022-3360 http://hdl.handle.net/10088/8158 79999 doi:10.1666/09-004.1 |
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 |
_version_ |
1766253917466787840 |