Mammalia - Artiodactyla - Protoceratidae
Parent taxon: Protoceratidae according to D. R. Prothero and J. A. Ludtke 2007
See also Hulbert and Whitmore 2006, Prothero 1998, Webb 1981 and Webb et al. 2003
Sister taxa: Calops, Heteromeryx, Leptoreodon, Leptotragulinae, Leptotragulus, Poabromylus, Protoceratinae, Pseudoprotoceras, Toromeryx, Trigenicus
Subtaxa: Kyptoceratini Synthetoceras Synthetoceratini
Ecology: ground dwelling browser
Distribution:
• Pliocene of United States (2: North Carolina collections)
• Hemphillian of Mexico (1), United States (4: Alabama, Florida)
• Miocene of Mexico (1), United States (53: California, Florida, Louisiana, Nebraska, New Jersey, South Dakota, Texas)
• Harrisonian of United States (7: Nebraska, Wyoming)
Total: 68 collections including 71 occurrences