# Corythosaurus (Corythosaurus casuarius) — DinoLand

> Field Journal — free dinosaur encyclopedia: 33 species with photos and video, catalog, ancient world maps (Triassic, Jurassic, Cretaceous, Gondwana), quiz, and paleontology glossary.

### id=24: Corythosaurus (Corythosaurus casuarius)

- URL: https://www.dinoland.ai/species.html?lang=en&id=24
- Diet: Herbivore
- Era: Cretaceous
- Period: 77–76 million years ago
- Length: 9 m
- Weight: ≈3,6 t
- Height: 4 m
- Speed: ≈25 km/h
- Habitat: Coastal lowlands and peat-rich swamps
- Region: North America
- Discovered: 1914, Barnum Brown

Fact: “Helmet-shaped crest—built-in resonator like a lambeosaurine French horn.”

Description: Corythosaurus is a lambeosaurine hadrosaur with a rounded, helmet-like crest encasing convoluted nasal passages capable of amplifying low-frequency vocalizations. Excellent hearing inferred from endocasts correlates with rich acoustic signaling in dense coastal forests where visibility was limited. Juveniles exhibit proportionally smaller crests through pronounced allometric growth.

Features:
  - Adult crest height can approach ~70 cm
  - Otic capsules imply sensitive auditory acuity
  - Abundant hadrosaurine faunas coexisted along river courses

Related genera: Parasaurolophus, Lambeosaurus, Edmontosaurus


## Citation

Field Journal — Dinosaur Encyclopedia — https://www.dinoland.ai

Web: https://www.dinoland.ai/species.html?lang=en&id=24
Index: https://www.dinoland.ai/llms-en.txt