Living: Over 20 skulls have been found from this dinosaur, which makes it the most known of all USA’s duck-beaked dinosaurs. Tall, hollow bone-crests are some of the characteristics of the Lambeosaurids, which this large dinosaur belonged to.
It is confusing, that not all Corythosaurs had the same type of crest on their heads. The size and shape depended on the gender and age. Before that was discovered, up to seven different species were found. Now only one of them has been approved. The Corythosaurus lived between the western mountains and the sea. In herds, they have wandered through the forests eating low-growing plants. During their walks, they sometimes met other Hadrosaurids. Some of the Corythosaurus-bones were found next to several other fossils of Gryposaurs, Prosaurolophus’, Lambeosaurs and the Parasaurolophus. If the herds got mixed up, their crest and a good smelling sense have been a great help to return to their own group. The crests must also have been used to attract females; it might even have changed color. Just like the other Hadrosaurids, they could use the crest as a "trumpet" to communicate.
Skeleton: The characteristic crest shows that this Hadrosaurus is a Corythosaurus. A hollow crest and the strong leg-bones were just like the other Lambeosaurids. Like all Hadrosaurs the Corythosaurs had the duck-beak and an "U"-bend neck.
Alternative name: Its remarkable crest also gave it another name. Instead of "Helmet-reptile" it was called "Triangle hat crest" because of the crests unusual shape.
