Pliosaur: Giant sea monster skull unearthed in Dorset

Can you imagine an ancient sea monster with razor-sharp teeth, flipper-like limbs and a head which is longer than most humans are tall?

Well, it turns out that creature really did exist and a fossil of its skull has been discovered.

The creature is called a pliosaur and is thought to have existed around 150-million-years-ago.

The fossil is one of the most complete of its kind ever, with one expert saying it is "unique".