In a world before the dinosaurs became the top predators, the Gorgonops was the true terror to be afraid of. Undoubtedly one of the most feared predators of its day, the Gorgonops lived roughly 260 million years ago in the late Permian period, the era that comes directly before the Triassic. Boasting canines that were so big they struggled to fit in their mouth, the Gorgonops’ speed and power in the hunt was, quite simply, without a rival.