Of all the mysteries surrounding dinosaurs, none has sparked more debate than how their era ended—was it a gradual decline or a sudden catastrophe? A new study led by Andrew Flynn of New Mexico State ...

Scientists have discovered a new dinosaur species in Argentina, believed to be among the most powerful predators alive 66 million years ago. Taller than the Tyrannosaurus, it had massive claws and was ...

For decades, scientists thought they had dinosaurs figured out, then someone would discover something new and everything would change. The theories about dinosaur brains and intelligence have been all ...