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, Bunomerycidae, Cainotherioidea, Choeropotamoidea, Climacoceratidae, Diacodexeidae, Dichobunoidea, Eolantianus, Erlianhyus, Eurytheriidae, Haplobunodontidae, Hsanotherium, Hyodonta, Merycoidodontoidea, Myanmarius, Neoselenodontia, Nonruminantia, Omnivora, Raphenacodus, Ruminantiamorpha, Suiformes, Suoidea, Tapirulidae, Tragulohyus, Trigonolestidae, Tylopoda, Entelodontoidea, Cetruminantia, Whippomorpha
Subtaxa: none
Ecology: ground dwelling herbivore
Distribution:
• Oligocene of United States (2: South Dakota collections)
Total: 2 collections each including a single occurrence