Corythosaurus

Corythosaurus // meaning 'helmet lizard' because of the shape of its crest (Greek korythos meaning 'helmet' and sauros meaning 'lizard') was a genus of duck-billed dinosaur  from the Upper Cretaceous Period, about 80 million years ago. It lived in what is now North America.
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Noun
1. duck-billed dinosaur with nasal passages that expand into a crest like a hollow helmet
(synonym) corythosaur
(hypernym) hadrosaur, hadrosaurus, duck-billed dinosaur
(member-holonym) genus Corythosaurus

CORYTHOSAURUS casuarius
The Corythosaurus, characterized by a spectacular crest, was a member of the duck bills. It was a well adapted herd animal and is quite prevalent in the North American fossil record.
TIME - 75MYA, Late Cretaceous period.
RANGE - USA - Montana CANADA - Alberta
DIET - These herbivorous browsers fed on pine needles, magnolia leaves, seeds, and various other plants as well as fruits.
SIZE - Lengths up to 27ft (9m) long.
WEIGHT - Adults weighed up to 5 US tons.

see time period