Ancient oceans were filled with massive, fearsome creatures. Based on sheer size alone, these animals put today's aquatic giants to shame. One such creature is a newly named "sea tyrant" that ruled ...

A newly identified mosasaur from Texas suggests that some ancient marine predators were larger, more powerful, and possibly ...

A new species of mosasaur — one of the largest marine reptiles ever documented ...

Tylosaurus rex rewrites the story of giant sea predators, not just for its size but for what its bones reveal about mosasaur ...

"Besides being huge, roughly twice the length of the largest great white sharks, T. rex appeared to be a much meaner animal ...

Imagine swimming in the ocean and suddenly spotting a creature larger than any shark, faster than any human can sprint, and more vicious than any predator alive today. Meet the Mosasaurus, a marine ...

A trio of researchers uncovered a massive marine reptile with the scientific name Tylosaurus rex after a hefty amount of detective work.

Tyrannosaurus rex might be the most feared dinosaur to ever walk the Earth, but there was once another T. rex that terrorised ...