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

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

A new exhibition at London’s Natural History Museum shines a light on Jurassic marine life and asks what their extinction could teach us about protecting the oceans now.

But more than half a billion years ago this wilderness was an ancient seafloor home to the wrinkled pancakes, fleshy fronds ...

Today we're going back… way back. Four and a half billion years to be exact. If you compressed all of Earth's history into a ...

We all know about the dinosaur called the Tyrannosaurus rex, also known as the T. rex, which is famous for its large head and ...

Why did T. rex have such tiny arms? Scientists now think it’s because its giant head became the ultimate hunting tool. Across ...

The evolution of tiny arms in several groups of meat-eating dinosaurs was likely driven by the development of strong, ...

Five different groups of predatory dinosaurs independently evolved disproportionately small arms, and it seems they did so ...

Scientists discovered three new mammal species that survived in Alaska’s ancient Arctic during the age of dinosaurs.

The Cretaceous Period produced some of the most unusual dinosaurs ever discovered, with body shapes that still feel ...

A spectacular dinosaur discovery in Spain is giving scientists a rare new look inside the world of stegosaurs.