Corythosaurus

Corythosaurus is a genus of crested, plant-eating hadrosaurid dinosaurs from Late Cretaceous North America. Its hollow, helmet-shaped crest contained elongated nasal passages.

Hadrosauridae: Hadrosauridae is a family of mostly herbivorous dinosaurs known for broad, flattened snouts and elaborate dental batteries. Corythosaurus belongs to this family of ornithopods.
Nasal passage: A nasal passage is an airway extending through the nose and connecting the nostrils to the respiratory tract. Corythosaurus's elongated nasal passages looped through its hollow crest.
Dinosaur Park Formation: The Dinosaur Park Formation is a Late Cretaceous rock unit in Alberta, Canada, rich in dinosaur fossils. Many Corythosaurus specimens come from this formation.
Barnum Brown: Barnum Brown was an American paleontologist who collected and described numerous dinosaur fossils. Brown named Corythosaurus in 1914 from fossils found in Alberta.
Lambeosaurinae: Lambeosaurinae is a hadrosaurid subfamily whose members typically had hollow, elaborate cranial crests. Corythosaurus is a lambeosaurine, distinguished by its helmet-like crest.
Hadrosaur vocalization: Hadrosaur vocalization is the proposed production of sound through air moving across the animals' nasal passages and crests. The crest's airways may have shaped low-frequency calls, though the sounds remain inferred.
Judith River Formation: The Judith River Formation is a Late Cretaceous rock unit in Montana and adjacent regions, preserving diverse vertebrate fossils. Corythosaurus fossils have also been recovered from this formation.
Corythosaurus intermedius: Corythosaurus intermedius is a species once assigned to Corythosaurus and later classified as Hypacrosaurus stebingeri. Its reassignment illustrates how fossil comparisons have revised the genus's boundaries.
Cranial crest: A cranial crest is a bony projection from the skull, sometimes enclosing passages or chambers. Its hollow crest is the genus's most recognizable anatomical feature.
Herbivory: Herbivory is the consumption of plant material by animals. Corythosaurus's teeth and jaws were adapted for processing vegetation.

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Dinosaur Provincial ParkRelated: Its fossils represent the duck-billed dinosaurs found in the park’s beds.