Ulughbegasaurus, a giant predator from 90 million years ago that eclipsed the first tyrannosaurs, has been discovered.

University of Wyoming researchers used CT scanning to see how much of the fossilized bones in an historic dinosaur were real.

A new research shows that the Tyrannosaurus rex's direct ancestor migrated from Asia over 70 million years ago. Even though ...

Tyrannosaurus rex evolved in North America, but its direct ancestor came from Asia, crossing a land bridge connecting the continents more than 70 million years ago, according to a new study.

Tyrannosaurus rex evolved in North America, but its direct ancestor came from Asia, crossing a land bridge connecting the ...

The direct ancestors of Tyrannosaurus rex would have arrived in North America after crossing a land bridge from Asia, according to a new study. The report is the latest to weigh in on the fierce ...

The prehistoric crocodile relative may have tolerated both freshwater and saltwater habitats, allowing it to conquer North American coasts in the Cretaceous. Paleontologists have been on the trail ...

The remains of a giant "sea monster" found in a Mississippi riverbed have been determined to belong to the largest mosasaur ...

A shared shape rule, the power cascade, governs most bird beak growth. It links modern birds with extinct dinosaurs.

These sebecids were the last survivors of a group of ancient crocodile relatives called Notosuchia. Unlike today’s crocodiles ...

This particular story takes place on the west coast of southern Pangea, specifically the region that would one day become the Ischigualasto Formation of Argentina, and concerns an animal that ...

Scientists explain which dinosaur was the fasted using simulations. Fossil footprints can't accurately capture a dinosaur’s ...