First Fossil Sponge from Antarctica an
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- journal_title：Journal of Paleontology
- Contributor：Radek Vodrážka ; J. Alistair Crame
- Publisher：Paleontological Society
- Date：2011-
- Format：text/html
- Language：en
- Identifier：10.1666/10-069.1
- journal_abbrev：Journal of Paleontology
- issn：0022-3360
- volume：85
- issue：1
- firstpage：48
- section：ARTICLE
摘要
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.