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 20 feet long. It had mini-van sized jaws, large flippers feet long, and a 1-1.5 ton body.