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First fossil sponge from Antarctica and its palaeobiogeographical significance

By Radek Vodrážka and J. Alistair Crame


Laocoetis piserai n. sp. (Hexactinellida, Porifera) from the mid-Cretaceous (i.e., Albian–Cenomanian) of James Ross Island is the first record of a fossil sponge from Antarctica. This new occurrence of a formerly widespread genus was restricted to relatively deep waters on the margins of an active volcanic arc. Its occurrence in Antarctica is further evidence that the genus Laocoetis underwent a dramatic reduction in its geographic range through the Cenozoic. The only living species of the genus at the present day is Laocoetis perion from Madagascar

Topics: Biology and Microbiology, Earth Sciences
Publisher: The Paleontological Society
Year: 2011
DOI identifier: 10.1666/10-069.1
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