Aurorarctos

Extinct genus of bears

Aurorarctos is an extinct North American genus of bears. It contains a single species, Aurorarctos tirawa, which lived in the Middle Miocene. Its fossils were discovered in the Valentine formation and Myers Farm of Nebraska, and represent the earliest known member of the Ursinae, showcasing that basal members of this subfamily were small, but already showed adaptions towards increasing herbivory as well as an arboreal lifestyle The genus name combines the Latin words aurora (dawn) and Greek arctos (bear); the specific epithet references the creator god Tirawa in Pawnee mythology.

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