Colossal Sea Monster Skull Unearthed; Could Have Gobbled T-rex

03/18/2010 05:12 am ET | Updated May 25, 2011

The ferocious predator, which is called a pliosaur, terrorised the oceans 150 million years ago. The skull is 2.4m long, and experts say it could belong to one of the largest pliosaurs ever found: measuring up to 16m in length.

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