Mammalia - Artiodactyla - Protoceratidae

Alternative combination: Poabromylus minor

Full reference: J. A. Wilson. 1974. Texas Memorial Museum Bulletin 23

Belongs to Pseudoprotoceras according to A. J. Kihm 1987

Sister taxa: Pseudoprotoceras longinaris, Pseudoprotoceras semicinctus, Pseudoprotoceras taylori

Type specimen: Its type locality is Yoder, which is in a Chadronian terrestrial siltstone/sandstone in the Chadron Formation of Wyoming

Ecology: ground dwelling browser

Average measurements (in mm): M1 8.60 x 10.50, M2 9.30 x 12.40, M3 8.50 x 11.70, m1 7.10 x 6.25, m2 8.80 x 6.70, m3 12.8 x 6.6