Corythosaurus are hadrosaurs ('duck-billed dinosaurs') once living in North America. They are herbivores that lived in herds. They were one of the larger types of hadrosaurs. Their heads had crests with nasal passages that are similar in structure to that of the cassowary. This was most likely used for vocalization Their name means 'corinthian-crested lizard' in reference to this crest. The crests also show dimorphism between the genders, with males believed to have the larger crests for competing for mates.
Discovery
The first specimen was discovered at Red Deer River in Alberta. Canada in 1911. Further fossils were found over the following few years, eventually identifying two species for the genus.
Paleoecology
Corythosaurus ranged widely in the various formations it's been recovered from. It has been noted that individual groups had small ranges compared to their modern mammal equivalents.
