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 ...

Over the next few years, paleontologists located more of the dinosaur with its bones "articulated" — or, fossilized in the same order as when it was alive. That means that after the allosaurus ...