Predator X is the name so far for a recently discovered pliosaur. This massive predator was first found near the Arctic by a Norwegian team. Predator X was 49 feet long, weighed 99,000 pounds, and had 12-inch teeth. In fact, its bite force is believed to be stronger than that of a T-rex. However, the only thing small about Predator X was its brain. The brain of Predator X was similar to the size and shape of a Great White Shark brain.