9The parasaurolophus was a duck-billed dinosaur famous for its long crest. Scientists believe the crest made a sound like a horn! This high-interest text explores the fascinating parasaurolophus, focusing on its appearance, diet, and behavior. Leveled text highlights key points, while labeled illustrations bring them to life. Added features such as maps, a pronunciation guide, a diet graphic, and a two-page profile further highlight the world of the parasaurolophus!