A flexible tongue, sensitive beak and teethlike cones in the mouth may have helped Archaeopteryx generate enough energy to fly.

To sort the earliest branches of the dinosaur family tree, paleontologists compare skeletons piece by piece. They build evolutionary trees from hundreds of anatomical traits—hip sockets, vertebrae, ...

A dinosaur skull displayed in Montana holds a broken Tyrannosaurus tooth lodged in its face, revealing a violent encounter 66 million years ago. Did this fossil capture a predator’s final strike?

Crocodiles belong to a group of animals known as archosaurs — a clade (or evolutionary branch) that also includes dinosaurs and pterosaurs. They share a common ancestor, which is why the confusion is ...

A strange prehistoric shark that lived during the age of dinosaurs is giving scientists new clues about how modern sharks evolved — and raising fresh questions at the same time. The small shark, known ...

“This is one of the oldest known four-legged animals to eat its veggies,” said Arjan Mann of the Field Museum in Chicago, a co-lead author of the study. “It shows that experimentation with herbivory ...

The “mesozoic cow” was a dinosaur with hundreds of ever-replacing teeth. Here’s how its uniquely adapted skull allowed it to graze like cattle on low vegetation.

A chicken-sized dinosaur from Spain has a surprisingly advanced skull and is rewriting 70 million years of evolution. Meet Foskeia pelendonum.

Scientists have reconstructed our most complete skeletal model ever of a monstrous 10 metre-long (32ft) crocodile known as a “dinosaur killer” that terrorised prehistoric waters about 76 million years ...

About 150 million years ago, the land that is now the western United States was alive with dinosaurs. New research shows that ...