13844238 - Pronghorn at Hart Mountain National Antelope Refuge, southeast Oregon. .13777622 - Group of Pronghorn Antelope (Antilocapra americana) walking through wintry landscape with mountain in background in Yellowstone National Park; Montana, United States of America13777623 - Pronghorn Antelope (Antilocapra americana) walking through wintry landscape with mountain in background in Yellowstone National Park; Montana, United States of America71418227 - Prong buck, Pronghorn antelope, Antilocapra americana, grasslands, New Mexico, wild71107855 - 'Pronghorn Antelope (Antilocapra americana), Grand Teton National Park; Wyoming, United States of America'71168444 - 'Line of Pronghorn Antelope (Antilocapra americana) crossing snow-covered meadow with rugged mountains in background, Shoshone National Forest; Wyoming, United States of America'71168443 - 'Herd of Pronghorn Antelope (Antilocapra americana) crossing snow-covered meadow with rugged moountains in background, Shoshone National Forest; Wyoming, United States of America'71325521 - Pronghorn Antelope - females and calf in sagebrush Antilocapra americana Yellowstone National Park Wyoming. USA MA002850 70088348 - Pronghorn antelope skull in barbed wire fence. Lewis and Clark Trail. Montana. USA.70383074 - Pronghorn Antelope Antilocapra americana . South Dakota. Has true horns with the sheaths shedding each year, both sexes have horns. Family Antilocapridae. Only one species in this family, strictly North American.70383073 - Pronghorn Antelope Antilocapra americana . South Dakota. Has true horns with the sheaths shedding each year, both sexes have horns. Family Antilocapridae. Only one species in this family, strictly North American.70125417 - Three female Pronghorn Antelope (Antilocapra americanus) in Yellowstone National Park, Wyoming, USA.