Semprebon, G.M.; Rivals, F. (September 2007). "Was grass more prevalent in the pronghorn past? An assessment of the dietary adaptations of Miocene to Recent Antilocapridae (Mammalia: Artiodactyla)". Palaeogeography, Palaeoclimatology, Palaeoecology. 253 (3–4): 332–347. Bibcode:2007PPP...253..332S. doi:10.1016/j.palaeo.2007.06.006.
Semprebon, G.M.; Rivals, F. (September 2007). "Was grass more prevalent in the pronghorn past? An assessment of the dietary adaptations of Miocene to Recent Antilocapridae (Mammalia: Artiodactyla)". Palaeogeography, Palaeoclimatology, Palaeoecology. 253 (3–4): 332–347. Bibcode:2007PPP...253..332S. doi:10.1016/j.palaeo.2007.06.006.