Liopeurodon was a predator of the late Jurassic Period. It lived in the shallow seas of Europe (most of Europe was underwater then). It's favorite prey included ichthyosaurs. It was a pliosaur, huge, aquatic, short-necked predators. It measured up to 60 feet long. It had mini-van sized jaws, flippers 10 feet long, and a 40 ton body.