A giant skull of a prehistoric sea predator has been unearthed by a team of fossil hunters in the UK, the BBC reported.  The more than 6-foot-long skull belongs to a pliosaur, a marine reptile that lived in the ocean about 150 million years ago.  The pliosaur could grow up to 39 feet and had a tear-shaped body. It had four flipper-like limbs that made it agile and quick as it tore through the water after its prey. It had lungs for breathing air and a massive head with a powerful jaw and serrated teeth. Read more about how it compared to other creatures at the link in our bio.