There's a new T. rex in the fossil record, only this one terrorized the ancient seas. New research led by scientists at the ...

Researchers at SMU and the Perot Museum have identified a new species of mosasaur, a 'T. rex of the sea' that lived alongside ...

Earth was a terrifying place during the Cretaceous period, some 66 million to 145 million years ago. During its tail end, Tyrannosaurus rex prowled the land. And a little before that, another kind ...

Long before humans existed, giant marine predators ruled the warm prehistoric seas that once covered much of North America.

Researchers describe Tylosaurus rex from more than a dozen previously known fossils and update dataset crucial for studying mosasaur evolution “Everything is bigger in Texas and that includes the ...