Parent taxon: Artiodactyla according to R. K. Stucky 1998
See also Edwards 1976 and McKenna and Bell 1997
Sister taxa: Achaenodontidae, Ancodonta, Antiacodontidae, Antiacodontinae, Booidea, Caenotheriidae, Cainotherioidea, Cetancodontamorpha, Choeropotamoidea, Climacoceratidae, Diacodexeidae, Dichobunoidea, Eolantianus, Eurytheriidae, Haplobunodontidae, Helohyinae, Hsanotherium, Hyodonta, Merycoidodontidae, Merycoidodontoidea, Myanmarius, Neoselenodontia, Nonruminantia, Nothokemadidae, Pantolestoidea, Raphenacodus, Ruminantiamorpha, Suiformes, Suoidea, Tragulohyus, Tylopoda, Whippomorpha, Cetruminantia, Entelodontoidea, Cetacea, Cetancodonta
Subtaxa: none
Ecology: ground dwelling herbivore
Distribution:
• Oligocene of United States (2: South Dakota collections)
Total: 2 collections each including a single occurrence