About about 145 million to 200 million years ago during the Jurassic Period, Earth’s creatures had to contend with one of the most powerful, ferocious predators that ever lived—a clawed, flesh-eating, ...

WASHINGTON (Reuters) - The dreaded dinosaur Allosaurus was the scourge of the Jurassic Period landscape some 150 million years ago, an apex predator just as Tyrannosaurus rex was 80 million years ...

The Smithsonian National History Museum’s fossil specimen of Allosaurus fragilis is perched like a nesting bird guarding a clutch of fossilized eggs. (Courtesy USNM V 4734, Department of Paleobiology, ...

WASHINGTON — A dinosaur fossil at the Smithsonian's National Museum of Natural History is celebrating a big achievement for one of its fossils. Its fossilized skeleton of the Jurassic dinosaur ...

One of the Jurassic Period's fiercest predators, known for ripping apart its prey before gulping it down, has arrived at The Children's Museum. Fortunately for visitors, the Allosaurus died about 150 ...

Step into a land ruled by giants and hunters. From forests of cycads and ferns to herds of massive sauropods, the Late Jurassic was a world in balance, until Allosaurus appeared. Explore the life, ...

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