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The cretaceous and paleocene Pleurotomariid (Gastropoda: Vetigastropoda) fauna of Seymour Island, Antarctica

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dc.contributor.author Harasewych, M. G. en
dc.contributor.author Oleinik, Anton en
dc.contributor.author Zinsmeister, W. J. en
dc.date.accessioned 2009-09-22T15:12:42Z
dc.date.available 2009-09-22T15:12:42Z
dc.date.issued 2009
dc.identifier.citation Harasewych, M. G., Oleinik, Anton, and Zinsmeister, W. J. 2009. "<a href="https%3A%2F%2Frepository.si.edu%2Fhandle%2F10088%2F8158">The cretaceous and paleocene Pleurotomariid (Gastropoda: Vetigastropoda) fauna of Seymour Island, Antarctica</a>." <em>Journal of Paleontology</em>. 83 (5):750&ndash;766. <a href="https://doi.org/10.1666/09-004.1">https://doi.org/10.1666/09-004.1</a> en
dc.identifier.issn 0022-3360
dc.identifier.uri http://hdl.handle.net/10088/8158
dc.description.abstract 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. en
dc.format.extent 17452536 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.relation.ispartof Journal of Paleontology en
dc.title The cretaceous and paleocene Pleurotomariid (Gastropoda: Vetigastropoda) fauna of Seymour Island, Antarctica en
dc.type Journal Article en
dc.identifier.srbnumber 79999
dc.identifier.doi 10.1666/09-004.1
rft.jtitle Journal of Paleontology
rft.volume 83
rft.issue 5
rft.spage 750
rft.epage 766
dc.description.SIUnit NMNH en
dc.description.SIUnit NH-Invertebrate Zoology en
dc.citation.spage 750
dc.citation.epage 766

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