About 150 million years ago, the land that is now the western United States was alive with dinosaurs. New research shows that the smallest members of the biggest dinosaurs played a huge role in ...

When you hear the word "dinosaur," the first thing that might spring to mind is a hulking skeleton like Sue the T rex in ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. For years, key fossils were thought by many paleontologists to be juvenile examples of ...

By Will Dunham WASHINGTON, Jan 30 (Reuters) - It may have been suicidal for a predator to go after a healthy adult ...

The discovery may push back the emergence of the reptiles that once ruled the Earth, and clarify how dinosaurs like the Triceratops and Stegosaurus emerged. By Asher Elbein A dog-size reptile slipped ...

Some 150 million years ago sauropods dramatically shaped the dinosaur ecosystem in what is now the western U.S., according to a new study ...

A new species of dinosaur, sporting unusually ornate horns on its head and behind its neck, was living alongside at least four other species of rhinoceros- or elephant-type dinosaurs 78 million years ...

An argument over whether fossils from several small dinosaurs represent a juvenile Tyrannosaurus rex or smaller adults of a separate species may finally be settled. When you purchase through links on ...