Hadrosaurs (meaning "bulky lizards") were the family of duck-billed herbivorous dinosaurs.
They were the most common dinosaurs.

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.
Hadrosaurs (meaning "bulky lizards") were the family of duck-billed herbivorous dinosaurs. They were the most common dinosaurs.
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.
Hadrosaur