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1 January 2011 First Fossil Sponge from Antarctica and Its Paleobiogeographical Significance
Radek Vodrážka, J. Alistair Crame
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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.

Radek Vodrážka and J. Alistair Crame "First Fossil Sponge from Antarctica and Its Paleobiogeographical Significance," Journal of Paleontology 85(1), 48-57, (1 January 2011).
Accepted: 1 August 2010; Published: 1 January 2011
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