Altirhinus

Altirhinus was a genus of Hadrosaurid dinosaur. It lived in the Early Cretaceous Period in Mongolia. It was herbivorous and bipedal when walking or running, but probably became quadrupedal when feeding from the ground. The entire body probably extended 26 feet (8 m) from snout to tail tip.

More real-life information: Altirhinus at Wikipedia.