Dinosaurs are the extinct relatives of birds that roamed the lands and seas of ancient Earth. They first appeared around 240 ...

A bizarre two-clawed dinosaur found in Mongolia reveals rare claw preservation and offers new insight into therizinosaur ...

Paleontologists discovered Duonychus tsogtbaatari from fossils uncovered in 2012. It was a giant, feathered creature adapted ...

This feathers-led-to-flight notion began to ... similarities between the skeletons of birds and terrestrial dinosaurs called theropods, a group that includes marquee monsters like Tyrannosaurus ...

Oviraptorosaurs are weird dinosaurs that look a bit like flightless birds. But these ancient animals aren't just ...

During the course of their evolutionary history, the body size of some theropod groups gradually decreased. This trend, together with many other changes to the skeleton, ultimately led to the ...

had a striking resemblance to dinosaurs like the “terrible claw” Deinonychus. What experts lacked, but hoped for, was a non-bird theropod with preserved feathers to cinch the connection.

New habitat, environs, and food sources made some of the dinosaurs to start using their arms for a whole new purpose ...

Paleontologists unearthed the fossil in Mongolia’s Gobi Desert, and the find is unique because of a sheath preserved on one ...