Mammalia - Cimolesta - Esthonychidae

Belongs to Trogosus according to C. L. Gazin 1953

Sister taxa: Trogosus gazini, Trogosus grangeri, Trogosus hillsii, Trogosus hyracoides, Trogosus latidens

Type specimen: Its type locality is Grizzly Buttes, which is in a Bridgerian terrestrial horizon in the Bridger Formation of Wyoming

Ecology: ground dwelling herbivore

Average measurements (in mm): m1 13.5 x 13.2