Alternative combinations: Aelurodon pugnator, Osteoborus pugnator, Porthocyon pugnator
Synonym: Osteoborus galushai Webb 1969
- Borophagus pugnator: Its type locality is Wray, which is in a Hemphillian terrestrial horizon in Colorado
- Osteoborus galushai: F:AM 61671, 61672, a mandible. Its type locality is Mixson's Bone Bed, which is in a Hemphillian terrestrial horizon in the Alachua Formation of Florida.
Ecology: ground dwelling carnivore
Average measurements (in mm): P4 24.6 x 11.2, M1 16.9 x 18.7, M2 9.61 x 13.78, p4 16.0 x 9.8, m1 26.9 x 10.7, m2 12.1 x 8.1