Oligocene marsupials of the Geilston Bay local fauna, Tasmania. American Museum novitates ; no. 3244

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Date

1998

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New York, NY : American Museum of Natural History

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Abstract

"Fragmentary remains of marsupials from the later Oligocene travertine deposits of Geilston Bay, River Derwent estuary, near Hobart, Tasmania, appear to represent elements of a temperate rainforest fauna then at about 50S latitude. These deposits are capped by alkali basalt that yielded a whole-rock age of 23.0 0.5 Ma, a minimum age for the Geilston Travertine. Identified taxa include a dasyurid, two petauroids, and a burramyid, all belonging to scansorial and arboreal groups having important representation in present-day forested environments. Only the petauroids are complete enough for phylogenetic analysis and both are more primitive than other known members of that superfamily. Their presence indicates a pre-Oligocene time of differentiation of the Diprotodontia in accordance with molecular and paleontological interpretations"--P. [1].

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22 p. : ill., 1 map ; 26 cm.
Includes bibliographical references (p. 20-22).

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http://hdl.handle.net/2246/3173

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American Museum Novitates