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 ...

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 ...

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 ...

The Western Interior Seaway, which existed roughly 80 million years ago, split North America into North and South. It was a warm, shallow sea teeming with life from the Arctic Ocean to the Gulf of ...

A prehistoric predator to rival the most fearsome giant of them all has just been discovered lurking half-forgotten in a ...

The Tylosaurus rex mosasaur discovery has formally added a new apex predator to the Late Cretaceous record, with researchers identifying a previously ...

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 ...

Not a dinosaur but a mosasaur — a gigantic ocean apex predator that lived about 80 million years ago Not a dinosaur but a mosasaur — a gigantic ocean apex predator that lived about 80 million years ...