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 most impressively complete dinosaur fossils ever recovered is getting an autopsy. Big Al the Allosaurus, a 150-million-year-old resident of Wyoming, recovered 30 years ago and currently 95% ...

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 ...