Mammalia - Carnivora - Canidae

Alternative combination: Brachyrhynchocyon sesnoni

Full reference: J. R. Macdonald. 1967. Contributions in Science, Natural History Museum of Los Angeles County 126

Belongs to Osbornodon according to X. Wang 1994

Sister taxa: Osbornodon brachypus, Osbornodon fricki, Osbornodon iamonensis, Osbornodon renjiei, Osbornodon scitulus, Osbornodon wangi

Type specimen: LACM 17039, a partial skeleton (partial skull and mandible plus postcranial fragments). Its type locality is Wolff Ranch (LACM 2002), which is in a Whitneyan terrestrial horizon in the Brule Formation of South Dakota.

Ecology: ground dwelling carnivore-omnivore

Average measurements (in mm): P4 13.3 x 8.6, M1 10.1 x 11.6, M2 6.05 x 8.30, p4 10.1 x 4.7, m1 15.0 x 6.5, m2 8.20 x 4.85