When you think of dinosaurs, do you still imagine giant gray scaly beasts that went extinct? Get ready to have your mind ...

Nanotyrannus isn't a 'mini T. Rex' after all — it's a new species, 'dueling dinosaurs' fossil reveals An argument over whether fossils from several small dinosaurs represent a juvenile Tyrannosaurus ...

The Smithsonian’s National Museum of Natural History’s fossilized skeleton of the Jurassic dinosaur Allosaurus has officially been named the type specimen for the entire species. This distinction ...

A new species of dinosaur, sporting unusually ornate horns on its head and behind its neck, was living alongside at least four other species of rhinoceros- or elephant-type dinosaurs 78 million years ...

The end of the dinosaurs was clearly linked to an asteroid impact that brought the Cretaceous period to a close. But the details of their end have remained a matter of debate since the impact crater ...

A new giant dinosaur species dubbed the "Last Titan" has been discovered in Thailand, researchers announced this week. The animal is the first sauropod dinosaur from the Lower Cretaceous Khok Kruat ...

Note to editors: Photos of the type specimen and other associated press materials can be found via Dropbox here. The Smithsonian’s National Museum of Natural History’s fossilized skeleton of the ...