The dinosaur, named Duonychus tsogtbaatari, measured about 10 feet (3 meters) long, weighed approximately 575 pounds (260 kg) and lived roughly 90 to 95 million years ago during the Cretaceous ...

The remains of a giant "sea monster" found in a Mississippi riverbed have been determined to belong to the largest mosasaur ...

"The sand was strong enough to retain the shape of their feet." —Weird bumps in UK quarry turn out to be 166 million-year-old dinosaur 'highway' for some of Jurassic's biggest dinosaurs When the ...