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 ...

Ancient oceans were filled with massive, fearsome creatures. Based on sheer size alone, these animals put today's aquatic ...

What started as a regular geology field trip turned into a once-in-a-lifetime discovery for 12-year-old Corbin Bullard.

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 ...

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 ...

Experts say the predator had strong muscles and saw-like teeth, and lived around 80 million years ago. Find out more here.

For years, a massive fossil sat in a museum collection under the wrong name. The specimen, originally cataloged as Tylosaurus ...

Scientists have identified Tylosaurus rex as a massive marine predator that rivalled Tyrannosaurus rex in size, ruling ...

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 ...

Discover Tylosaurus rex, the formidable marine predator of the Cretaceous, rivaling T. rex in size and ferocity.