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Temporal range: Late Cretaceous - Paleocene, 75–56Ma
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Cimolesta
Family: Cimolestidae
Marsh, 1889
Genus: Cimolestes
Marsh, 1889
Type species
Cimolestes incisus
Marsh, 1889

Nyssodon Simpson, 1927

Cimolestes ("Bug Thief") is a genus of early eutherians. Fossils have been found in North America, where they first appeared during the Late Cretaceous; they died out during the Paleocene.[1]

They were once considered to be marsupials, but now are considered to be members of the order Cimolesta (which was named after the genus). The cimolestids may be the common ancestral group of two clades of carnivorous mammals: Carnivora and the extinct Creodonta.


  1. ^ McKenna, M. C, and S. K. Bell (1997). Classification of Mammals Above the Species Level. Columbia University Press. ISBN 0-231-11012-X.