Mammalia - Carnivora - Canidae

Alternative combination: Osteoborus secundus

Synonyms: Borophagus cyonoides Martin 1928, Borophagus direptor Matthew 1924, Hyaenognathus cyonoides Martin 1928, Hyaenognathus direptor Matthew 1924, Osteoborus cyonoides Martin 1928, Osteoborus direptor Matthew 1924

Full reference: V. L. VanderHoof. 1931. University of California Publications, Bulletin of the Department of Geological Sciences 21(2)

Belongs to Borophagus according to X. Wang et al. 1999

Sister taxa: Borophagus diversidens, Borophagus dudleyi, Borophagus hilli, Borophagus littoralis, Borophagus orc, Borophagus parvus, Borophagus pugnator

Ecology: ground dwelling carnivore

Average measurements (in mm): P4 25.0 x 11.4, M1 16.3 x 19.6, M2 9.55 x 13.79, p4 16.1 x 10.9, m1 26.9 x 11.3, m2 11.8 x 8.7