''Cormocyon'' is an extinct genus of

borophagine The extinct Borophaginae form one of three subfamilies found within the canid family. The other two canid subfamilies are the extinct Hesperocyoninae and extant Caninae. Borophaginae, called "bone-crushing dogs", were endemic to North America du ...

canid Canidae (; from Latin, '' canis'', " dog") is a biological family of dog-like carnivorans, colloquially referred to as dogs, and constitutes a clade. A member of this family is also called a canid (). There are three subfamilies found withi ...

native to North America. It lived from the

Oligocene The Oligocene ( ) is a geologic epoch of the Paleogene Period and extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but ...

to the

Early Miocene The Early Miocene (also known as Lower Miocene) is a sub-epoch of the Miocene Epoch made up of two stages: the Aquitanian and Burdigalian stages. The sub-epoch lasted from 23.03 ± 0.05 Ma to 15.97 ± 0.05 Ma (million years ago). It was p ...

, 30.8—20.6 Mya, existing for about . It is regarded as a primitive, transitional member of the

Borophagini Borophagini is a clade or tribe of the subfamily Borophaginae. This is an extinct group of terrestrial canids that were endemic and widespread throughout North America and Central America which lived during the Geringian stage of the Oligoce ...

tribe.

References

*''The Terrestrial Eocene-Oligocene Transition in North America'' By Donald R. Prothero and Robert J. Emry *Flynn, J.J., 1998. Early Cenozoic Carnivora ("Miacoidea"). pp. 110–123 ''in'' C.M. Janis, K.M. Scott, and L.L. Jacobs (''eds.'') ''Evolution of Tertiary Mammals of North America. Volume 1: Terrestrial Carnivores, Ungulates, and Ungulatelike Mammals.'' Cambridge University Press, Cambridge. Oligocene canids Miocene canids Oligocene genus extinctions Cenozoic mammals of North America Prehistoric carnivoran genera Paleogene genus first appearances Taxa named by Xiaoming Wang {{paleo-carnivora-stub