In 1975 Pater Dodson studied the skulls and crests of lambeosaurine dinosaurs and found that the size and shape may have depended on the gender and age of the animal.
In 1975 Pater Dodson studied the differences between the skulls and crests of different species of lambeosaurine dinosaurs. He found that the differences in size and shape may have actually been related to the gender and age of the animal.