Mammalia - Artiodactyla - Merycoidodontidae
Parent taxon: Merycoidodontidae according to M. S. Stevens and J. B. Stevens 2007
See also McKenna and Bell 1997, Schultz and Falkenbach 1968 and Stevens and Stevens 1996
Sister taxa: Aclistomycterinae, Brachycrurinae, Eporeodontinae, Merychyinae, Merychyus pariogonus, Merycochoerinae, Merycoidodontinae, Miniochoerinae, Oreonetinae, Phenacocoelinae, Promerycochoerinae, Ticholeptinae, Ustatochoerinae, Diplotremus
Subtaxa: Leptauchenia Leptaucheniini Limnenetes Sespia Sespiini
Ecology: ground dwelling herbivore
Distribution:
• Arikareean of United States (74: California, Colorado, Montana, Nebraska, South Dakota, Wyoming collections)
• Oligocene of Canada (1: Saskatchewan), United States (116: Colorado, Montana, Nebraska, North Dakota, South Dakota, Wyoming)
• Eocene of United States (5: Montana, Texas)
Total: 196 collections including 258 occurrences