Massive marine predator crowned T. rex of the ocean and ‘a true terror of its time’

There’s a newly crowned T. rex. This one, called Tylosaurus rex, was a tyrant of the sea and mosasaur spanning up to 43 feet in length.

​ There’s a newly crowned T. rex. This one, called Tylosaurus rex, was a tyrant of the sea and mosasaur spanning up to 43 feet in length. Read More Breaking News, Latest News and Videos | CNN