Mammalia - Artiodactyla - Leptochoeridae
Full reference: O. C. Marsh. 1894. Description of Tertiary artiodactyles. American Journal of Science 48(285):259-275
Parent taxon: Dichobunoidea according to J. M. Theodor et al. 2007
See also Carroll 1988, Colbert 1938, Korth et al. 2022, Scott 1913 and Scott 1940
Sister taxa: Acoessus, Cebochoeridae, Dichobunidae, Helohyidae, Homacodontidae, Mixtotheriidae, Raoellidae
Subtaxa: Diacodexis woltonensis Ibarus Laredochoerus Leptochoerus Stibarus
Ecology: ground dwelling grazer-browser
Distribution:
• Miocene of United States (1: South Dakota collection)
• Oligocene of Canada (2: Saskatchewan), United States (42: Colorado, Nebraska, South Dakota, Wyoming)
• Eocene to Oligocene of Mexico (1), United States (1: Nebraska)
• Eocene of Canada (4: Saskatchewan), United States (24: California, Colorado, Montana, Nebraska, North Dakota, South Dakota, Texas, Wyoming)
Total: 75 collections including 83 occurrences