A giant fossil sea monster, nickname Predator X, found in the Arctic is thought to have roamed oceans about 147 million years ago. The reptile with powerful jaws had such a ferocious bite it would have been able to crush a 4x4 car, say researchers. Researchers discovered part of the creature’s skull last summer.

It’s thought to belong to a new species of pliosaur, which are a group of large, short-necked reptiles. Pliosaurs lived at the time of the dinosaurs, but even by their standards, this sea monster’s size has amazed scientists.