Approximately 160 million years ago, during the Age of Dinosaurs, giant marine reptiles ruled the seas. One such creature, an ...

A Kansas boy discovered a 15-foot-long tylosaurus fossil dating back 85 million years during a geology club field trip at a local quarry last year.

Tyrannosaurus rex was a huge land predator during the twilight of the age of dinosaurs. But it was not the only T. rex that ...

Kronosaurus Kronosaurus queenslandicus is a sort of large short-necked marine reptile called a pliosaur. How big was it?

A giant marine reptile that dominated the seas 80 million years ago has been identified as a new species and named "Rex." ...

Add Yahoo as a preferred source to see more of our stories on Google. Sixty-six million years ago, the Cretaceous period ended. Dinosaurs disappeared, along with around 90% of all species on Earth.

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 ...

Fossils of a strange new species of marine lizard with dagger-like teeth that lived 66 million years ago, show a dramatically more biodiverse ocean ecosystem to what we see today. Paleontologists have ...

Scientists have discovered the fossil of a giant "nightmarish" sea creature that hunted the oceans millions of years ago. The prehistoric lizard, Khinjaria acuta, was estimated to be about 26 feet ...

Researchers have discovered a huge new mosasaur from Morocco, named Thalassotitan atrox, which filled the apex predator niche. With massive jaws and teeth like those of killer whales, Thalassotitan ...

About one hundred and ten million years ago a shallow sea covered what is now arid inland Australia. Australia’s most ...

Paleontologists have discovered a strange new species of marine lizard with dagger-like teeth that lived near the end of the age of dinosaurs. Their findings, published in Cretaceous Research, show a ...