Genus · Hadrosauridae · Cretaceous

Corythosaurus

Named by Brown 1914

Corythosaurus lived 83.6–72.1 million years ago, during the Campanian stage of the Late Cretaceous. The Paleobiology Database lists 29 fossil records for it from 2 countries (Canada and United States) — the 42nd most of the 99 genera on this site.

Where it sits in time

Key facts from the records

Most of what is known comes from one rock unit: 72% of its records are from the Dinosaur Park Formation.
Lambeosaurus appears in 3% of the collections that hold Corythosaurus; Struthiomimus in 3%.
Its stage range spans about 11.5 million years (36th longest of 99); it is the 12th best-recorded of the 21 ornithopods here.

2 accepted species

Species	Named by	Records
Corythosaurus casuarius	Brown 1914	17
Corythosaurus intermedius	Parks 1923	6

Where it was found

29 records with coordinates.

Found alongside

Rock formations

States & provinces

Region	Records	Share
Alberta	26	90%
Montana	3	10%

Country	Records	Share
Canada	26	90%
United States	3	10%

Depositional settings

Rock settings recorded for its fossil sites, where known.

Channel11
Coarse channel fill1
Channel lag1

Other ornithopods of its time

Same group, overlapping stage range, not found in the same collections.

Genus	Age	Country	Records
Thescelosaurus	83.6–66 Ma	United States, Canada	55
Zalmoxes	83.6–66 Ma	Romania, Austria	44
Rhabdodon	83.6–66 Ma	France, Spain	37
Gryposaurus	199.5–72.1 Ma	Canada, United States	31
Kritosaurus	83.6–72.1 Ma	United States, Canada	25
Parasaurolophus	83.6–72.1 Ma	United States, Canada	20
Prosaurolophus	83.6–72.1 Ma	Canada, United States	15

Also from these formations