Pronghorn

Yellowstone pronghorn (Antilocapra americana) are one of the few populations that was not exterminated or decimated by the early twentieth century and were, therefore, the source for re-establishing or supplementing populations of pronghorn in several states during the first half of that century. The population expresses much of the genetic variation that was formerly widespread in the species, but is no longer present elsewhere. The population also retains one of only two pronghorn migrations remaining in the Greater Yellowstone region and is an integral part of the unique predator–prey ecosystem of Yellowstone.
 
Updated 4/24/08