The creatures, which resembled bizarre pandas, used the appendages for foraging.

A new species of dinosaur found at a Mongolian building site has the largest fully preserved claw ever found. The bipedal, herbivorous animal had only two fingers on each hand, which it may have ...

“This is by far the biggest claw preserved for a dinosaur that has that keratinous sheath on it.” The dinosaur has been given the scientific name Duonychus tsogtbaatari, in honor of Mongolian ...

This family of dinosaurs are known for their long necks, small leaf-shaped teeth, and large hooked claws on their hands. They mostly had three-fingered hands with large claw-like toe bones.

It could be “the largest fully preserved dinosaur claw” yet unearthed, study co-author Darla Zelenitsky, a paleontologist and associate professor at the University of Calgary, said in an email.

Two claws, they note, would have made each claw stronger than if there were three, allowing the dinosaur to grab thicker branches.

they’ve got like a bony claw underneath that keratin sheath, right? So, it’s the same with a dinosaur,” Zelenitsky said. Keratin, a protein that helps make up fingernails, typically encases ...