Pristichampsus Attacking Early Horses Pristichampsus is an extinct crocodile relative that could grow up to 10 feet long. The armored reptile lived mostly on land, and fed on land mammals like these early horses.
8 Prehistoric Creatures Ripped Directly from Your Nightmares
This predator is called a gorgonopsid, which was essentially a bear-sized saber-toothed dog-lizard with a skull. Gorgonopsids of the genus Inostrancevia were even larger -- about the size of a rhino -- with canines roughly 4 inches long.