Some 150 million years ago sauropods dramatically shaped the dinosaur ecosystem in what is now the western U.S., according to ...

Infant and juvenile sauropods were the primary food source for fearsome predators during the ...

Learn how fossils from Colorado’s Morrison Formation helped researchers reconstruct a Late Jurassic food web and uncover the ...

By Will Dunham WASHINGTON, Jan 30 (Reuters) - It may have been suicidal for a predator to go after a healthy adult Brachiosaurus, a behemoth weighing perhaps 60 tons that was a member of the ...

Babies and very young sauropods—the long-necked, long-tailed plant-eaters that in adulthood were the largest animals to have ever walked on land—were a key food sustaining predators in the Late ...

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 ...

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 ...

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, ...

Baby sauropods were the fast food of the Late Jurassic, feeding multiple predators and propping up the entire ecosystem. Their vulnerability may even explain why later giants like T. rex evolved to ...

In a paper published August 23, authors Cameron Pahl and Luis Ruedas, of Portland State University, show that Allosaurus, a large carnivorous dinosaur from the Jurassic that has long been thought to ...