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 ...

Scientists discover new marine T-rex that was twice the size of great whites and ‘meaner than any mosasaur’ - Researchers say ...

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.

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

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 fossils of a new prehistoric species in Morocco — a bizarre-looking marine lizard considerably larger than a great white shark, which, they say, dominated the seas while ...

One sweltering afternoon this spring, Stephen Kruse trekked along a dry creek bed with a backpack full of fossils. An amateur enthusiast, Kruse has been interested in dinosaurs and prehistoric ...

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 ...

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 ...