Parasaurolophus (PAIR-ah-sore-oll-OH-fuss) Plant eater, 30 feet long, Late Cretaceous Period. 65 million years ago located in Western North America. Parasaurolophus had the fanciest crest of any duckbilled dinosaur. It could blow low notes through its trumpet just as an elephant does today. Long ago, some scientists thought Parasaurolophus lived in the water and used its horn as a snorkel. Boy, were they wrong!