Subfamily Tremarctinae Merriam and Stock 1925 (bear)
Mammalia - Carnivora - Ursidae
Parent taxon: Ursidae according to E. Trajano and H. Ferrarezzi 1995
See also Bjork 1970, Kurten and Anderson 1980, Schubert and Kaufmann 2003, Soibelzon et al. 2008 and Tedford and Martin 2001
Sister taxa: Agriotheriinae, Ailuropodinae, Amphicynodontinae, Eoarctos, Harpaleocyon, Hemicyoninae, Metarctos, Myadina, Phoberocyoninae, Proarctotherium, Taxina, Ursinae, Ursulus
Subtaxa: none
Ecology: ground dwelling herbivore-carnivore
Distribution: