Canidae - Evolution - Oligocene Epoch

Oligocene Epoch

By the Oligocene, all three subfamilies of canids (Hesperocyoninae, Borophaginae, and Caninae) had appeared in the fossil records of North America. The earliest and most primitive branch of the Canidae was the Hesperocyoninae lineage, which included the coyote-sized Mesocyon of the Oligocene (38-24 Mya). These early canids probably evolved for the fast pursuit of prey in a grassland habitat; they resembled modern civets in appearance. Hesperocyonines eventually became extinct in the middle Miocene. One of the early member of the Hesperocyonines, the genus Hesperocyon, gave rise to Archaeocyon and Leptocyon. These branches led to the borophagine and canine radiations.

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Other articles related to "epoch, oligocene epoch":

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 preceded by the Oligocene epoch ...

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