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A New Species of Palaeosinopa (Insectivora: Pantolestidae) from the Late Paleocene of Western North America
Philip D. Gingerich
Journal of Mammalogy
Vol. 61, No. 3 (Aug., 1980), pp. 449-454
Published by: American Society of Mammalogists
Stable URL: http://www.jstor.org/stable/1379838
Page Count: 6
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A new species of Palaeosinopa is described from the late Tiffanian Dell Creek Quarry in the Hoback Basin of western Wyoming. This is the oldest record of the genus Palaeosinopa. Palaeosinopa simpsoni Van Valen from the early Tiffanian is synonymized with Paleotomus senior (Simpson), and this taxon is regarded as a pantolestid as originally described, not a palaeoryctid as more recently proposed. Paleotomus is plausibly the ancestor of the middle and late Tiffanian pantolestid Niphredil, and it may be the ancestor of late Tiffanian, Clarkforkian, and Wasatchian Palaeosinopa as well.
Journal of Mammalogy © 1980 American Society of Mammalogists