Borophagina is a subtribe of the Borophaginae, a group of extinct canids. They inhabited much of North America from the Early Miocene to the Zanclean stage of the Pliocene, 20.6—3.6 Mya, and existed for approximately .PaleoBiology Database: Borophagina: Age range and collections
Like some other borophagines, they were short-faced, heavy-jawed canidsNowak, R. M., Walker's Mammals of the World. Maryland, Johns Hopkins University Press (edited volume) II, 1991Phylogenetic systematics of the Borophaginae (Carnivora, Canidae). Bulletin of the AMNH; no. 243, Wang, Tedford, Taylor. although the group included both omnivorous and hypercarnivorous species.
References