Mammalia - Carnivora - Canidae

Alternative combinations: Cynodictis temnodon, Hesperocyon temnodon, Nothocyon temnodon, Pseudocynodictis temnodon

Belongs to Mesocyon according to X. Wang 1994

Sister taxa: Mesocyon brachyops, Mesocyon coryphaeus

Type specimen: AMNH 8753, a mandible (partial left ramus). Its type locality is Vista, which is in a Whitneyan terrestrial horizon in the White River Formation of Colorado.

Ecology: ground dwelling carnivore-omnivore

Average measurements (in mm): P4 12.5 x 7.7, M1 9.67 x 11.20, M2 5.50 x 7.44, p4 9.11 x 4.17, m1 13.8 x 6.0, m2 7.23 x 4.68