Inostrancevia was a tiger-sized, saber-toothed gorgonopsian that lived on the supercontinent Pangea during the Permian period, approximately 252 million years ago. The new fossil discovery in South Africa suggests that Inostrancevia migrated 11,300 km (7,000 miles) across Pangea, filling a gap in a faraway ecosystem that had lost its top predators, before going extinct itself. Inostrancevia with its dicynodont prey, scaring off the much smaller African...
