Allosaurus was the most common large carnivore of the Late Jurassic in North America. It was a smaller predecessor of the Cretaceous Tyrannosaurus. Strong forelimbs with sharp claws, powerful hind ...

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

Paleontologists on a Wyoming dig led by The Children's Museum have discovered a rarity: the almost intact snout of an allosaurus. While digging with a piece of construction equipment, site manager ...