Purussaurus
The Purussaurus, or “Purus Lizard,” lived about 10 million years ago, during the Miocene. These extinct animals were some of the largest crocodilians to ever exist, and were roughly 10 meters long. They also weighed 6 tons and were some of the most vicious predators in their environment. They hunted large mammals, in addition to the Megapiranha, which are extinct animals we saw earlier on this list (Additional Creatures).