For 135 million years, dinosaurs were the undisputed rulers of the Earth, and could still have been today if not for a cataclysmic comet some 65 million years ago. However, our planet has been around for a lot longer than the dinosaurs’ reign and, as it turns out, nature is quite adept at producing nightmare-inducing monsters. To think that dinosaurs are the only scary inhabitants of our prehistoric past would be a mistake.
Now your watch 10 Terrifying Prehistoric Sea Monsters
