Mammalia - Artiodactyla - Antilocapridae
Full reference: J. E. Gray. 1866. Notes on the Proghorn Buck (Antilocapra), and its position in the system. Annals and Magazine of Natural History 18(10):323-326
Parent taxon: Antilocapridae according to C. M. Janis and E. Manning 1998
See also Bravo-Cuevas et al. 2013
Sister taxa: Antilocapra, Cosorycinae, Hayoceros, Hexameryx, Ilingoceros, Merriamoceros, Merycodontinae, Merycodus, Paracosoryx, Plioceros, Ramocerotinae, Submeryceros, Texoceros
Subtaxa: Capromeryx Ceratomeryx Hexobelomeryx Osbornoceros Ottoceros Proantilocapra Sphenophalos Stockoceratini Tetrameryx
Ecology: ground dwelling browser-grazer
Distribution:
• Quaternary of Canada (1: Saskatchewan collection), Mexico (16), United States (54: Arizona, California, Florida, Kansas, Nebraska, New Mexico, Texas)
• Blancan of Mexico (4), United States (27: Arizona, California, Florida, Idaho, Kansas, Nebraska, New Mexico, Texas, Washington)
• Hemphillian of Mexico (13), United States (33: Arizona, California, Florida, Nebraska, Nevada, New Mexico, Oklahoma, Oregon, Texas)
• Miocene to Pliocene of United States (1: Nebraska)
• Miocene of United States (8: Florida, Montana, Nebraska, Oregon, Texas)
Total: 157 collections including 172 occurrences