Here’s how it works. Paleontologists have discovered the skeleton and radioactive skull of a previously unknown species of Allosaurus. The fearsome two-legged dinosaur sported 80 sharp teeth and ...

The skull of Triceratops was a set of lances and a shield to defend against ravenous Tyrannosaurus, and the plates and spikes of Stegosaurus evolved to make Allosaurus think twice about taking a bite.

Poking and swiping at the sandstone, I still believed that an Allosaurus claw, hip fragment, or skull element was just ... and then flit around your face and ears as if they are trying to drive ...

A cast of the skeleton and skull of Allosaurus jimmadseni as it was discovered and now on exhibit at Dinosaur National Monument in Utah. The original skeleton was molded and cast before it was ...

The museum’s fossil specimen of Allosaurus fragilis is perched like a nesting bird guarding a clutch of fossilized eggs. Credit: USNM V 4734, Department of Paleobiology, Smithsonian Institution. Photo ...

The auction house sold the fossils as part of a sale titled Jurassic Icons: Allosaurus and Stegosaurus that featured a pair of allosaurus fossils—one juvenile and one adult—as well as the ...