Hadrosaur
Hadrosaurs ranged in size from 10 to 65 ft (3 to 20 m) long. They had horny, toothless beaks and hundreds of cheek teeth in the sides of their jaws. The duck-billed dinosaurs had the most teeth; they had up to about 960 cheek teeth. Hadrosaurs lived during the later Cretaceous, and their fossils have been found in North America, Europe, and Asia.Riff the Hadrosaur on Barney and Friends