Barnum Brown
A set of characters were indicated by Barnum Brown in 1914 to distinguish "Corythosaurus" from all other hadrosaurids from Alberta: a comparatively short skull with a high helmet-like crest formed by the nasals, prefrontals and frontals; the nasals not being separated in front by the premaxillaries; a narrow beak, with an expansion in front of an elongated naris; and a small narial opening.