Are there antelopes in the US?
Pronghorn
The pronghorn (, ) ("Antilocapra americana") is a species of artiodactyl mammal indigenous to interior western and central North America. Though not an antelope, it is often known colloquially in North America as the American antelope, prong buck, pronghorn antelope, prairie antelope, or simply antelope because it closely resembles the true antelopes of the Old World and fills a similar ecological niche due to parallel evolution.
Antelope Creek phase
Most archaeologists believe that the Antelope Creek Phase was a western expansion of farming communities from Oklahoma into the Texas panhandle or an extension southward of similar farming communities from further north. Although farming was difficult in the dry climate of the Texas panhandle, other food resources such as bison were abundant. Bison or American buffalo are believed to have been uncommon on the southern Great Plains before AD 1000. As the bison population expanded thereafter due to climatic conditions, they became the principal source of protein for people on the southern Plains and their abundance stimulated a growth in population and complexity of the hunting-gathering societies that had inhabited the region for thousands of years. Archaeological sites confirm increased exploitation of bison after AD 1200.