Mammalia - Artiodactyla - Merycoidodontidae

Alternative combination: Pronomotherium siouense

Belongs to Brachycrus according to B. Lander 1998

Sister taxa: Brachycrus buwaldi, Brachycrus laticeps, Brachycrus rusticus, Brachycrus sweetwaterensis, Brachycrus vaughani

Type specimen: Its type locality is Princeton Loc1000C, which is in a Hemingfordian terrestrial horizon in the Olcott Formation of Nebraska.

Ecology: ground dwelling herbivore

Average measurements (in mm): m1 16.0 x 14.0