Mammalia - Artiodactyla - Merycoidodontidae

Alternative combination: Pseudocyclopidius orellaensis

Full reference: C. B. Schultz and C. H. Falkenbach. 1968. Bulletin of the American Museum of Natural History 139

Belongs to Leptauchenia according to B. Lander 1998

Sister taxa: Leptauchenia decora, Leptauchenia eiselyi, Leptauchenia major

Type specimen: Its type locality is Douglas Area Brule (5-6a), which is in an Orellan terrestrial horizon in the Brule Formation of Wyoming

Ecology: ground dwelling herbivore