Tylosaurus rex rewrites the story of giant sea predators, not just for its size but for what its bones reveal about mosasaur identity, violence, and evolution. Fossils long grouped with another ...

A colossal new sea predator named Tylosaurus rex has been identified from fossils found in Texas, revealing a brutal 43-foot-long hunter that ruled ancient oceans 80 million years ago. The discovery ...

Tyrannosaurus rex may have been a much slower grower than scientists realized. A new study of 17 tyrannosaur fossils found that the giant predator likely took about 40 years to reach its full size of ...