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Back Blog The First Dog - Hesperocyon
10 Mar 2012

The First Dog - Hesperocyon

The genus to which all modern dogs belong, Canis, evolved in North America about six million years ago, but it was preceded by various dog-like "canid" mammals--and the mammalian genus that was immediately ancestral to the canids was the late Eocene Hesperocyon. About the size of a fox, Hesperocyon possessed an inner-ear structure similar to that of modern dogs, and also like its modern descendants it probably roamed in packs (though whether these communities lived high up in trees, burrowed underground, or trekked across the open plains is a matter of some dispute).

Last modified on Monday, 03 June 2013 21:17

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