A set of massive dinosaur footprints found in southeast ... typically about the size of a turkey. Only a few raptor species, like Utahraptor and Dakotaraptor, could grow to lengths of 16.4 to ...

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

The Cretaceous period, which spanned from 145 to 66 million years ago, saw the emergence of advanced species such as Velociraptor, Triceratops, and T. rex. Dinosaurs once ruled all continents ...

However, at face value, the fossils available for study from this time — more than 8,000 — suggest the number of dinosaur species peaked about 75 million years ago and then declined in the 9 ...

A rare new species of two-clawed dinosaur has been discovered by scientists in Mongolia's Gobi Desert. The species, named Duonychus tsogtbaatari, was unique within a group of dinosaurs called ...