The newly described mosasaur Tylosaurus rex spanned up to 43 feet (13 meters) long and may have been one of the fiercest ...

Paleontologists have discovered a new 40-foot mosasaur species with a massive, skull-crushing bite that ruled the Cretaceous ...

Just when you thought it was safe to go back in the water, scientists have discovered a giant, bus-size sea predator that was ...

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

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

Equipped with powerful jaws and finely serrated teeth, paleontologists say the 43-foot-long prehistoric marine reptile deserves the name Tylosaurus rex.

Scientists figured out that the predators were lumped in with a previously named mosasaur species. The new one, called Tylosaurus rex, could grow to 43 feet long, about the length of a school bus ...

Dr. Amelia Zietlow from the History Museum at the Castle published her findings last week, describing the new mosasaur. Wrightstown residents invited to data center listening session, Cloverleaf to ...

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

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

Researchers say the Tylosaurus rex measured up to 43 feet long with powerful jaws and serrated teeth.

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 ...