Giant Prehistoric Animals With Modern-Day Relatives

Despite its name, deinosuchus was not a dinosaur, but a crocodilian. In fact, it could have preyed on dinosaurs who ventured too close to its watery home. The glyptodon, meanwhile, was well over 3 meters in length, and was roughly the size of a small car.

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Key Facts In This Video

  1. Megatherium was a prehistoric elephant-sized ground sloth. 01:23

  2. Predatory "terror birds" were taller than ostriches and weighed about half a ton. 03:46

  3. Nuralagus rex was an ancient rabbit that weighed more than 23 kilograms. 06:43

Written by Curiosity Staff April 9, 2015