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 ...

Allosaurus was at the top of the food chain many years before T. Rex. Allosaurus was at the top of the food chain many years before T. Rex. Dinosaur Train is available to stream on pbs.org and the ...

Scientists named the beast Allosaurus jimmadseni, after paleontologist James Madsen Jr. (1932-2009), recognizing him for his "herculean efforts of protecting, excavating, preparing and curating of ...

Allosaurus is a type of dinosaur dating from the Late Jurassic (Morrison Formation, 155 to 145 million years ago), that lived primarily in what is now Western North America.

A new species of carnivorous dinosaur, called Allosaurus jimmadseni, has been described in a new paper published today in the open-access scientific journal PeerJ. A. jimmadseni came 5 million ...