Kingdom Animalia
Phylum Chordata 
Class Archosauria 
Order Ornithischia
Suborder Ornithopoda
Family Iguanodontidae
Genus Parasaurolophus
Parasaurolophus was a long-crested, duck-billed dinosaur. Its bony crest was used to produce low-frequency, foghorn-like sounds, enhance its sense of smell, and used in courtship displays. The crest was up to 6 feet long. Males may have had longer crests. Parasaurolophus were about 33 feet long and weighed about 3 to 4 tons. It had a toothless, spoon-shaped beak and a pointy tail. It had keen sight and hearing. Parasaurolophus lived during the late Cretaceous period, about 76-65 Million years ago. Parasaurolophus was an herbivore. And were thought to be a fairly intelligent dinosaur. Parasaurolophus walked on two legs and was a relatively fast dinosaur. It probably went on all fours legs to forage for plants and may have spent some time in the water.