Hot Pursuit! Ramoceros osborni fleeing Amphycion ingens in a neat display at the American Museum of Natural History in New York City, New York. #Ramoceros is an #antilocaprid that lived 12 mya in the Midwest. It is related to the #pronghorn, #Antilocapra, the second fastest land mammal and the fastest in North America. Though only one species exists today, historically this was a very diverse group, relying on speed to escape fast predators such as the American #cheetah, #Miracinonyx. Some argue