# Parasaurolophus (Parasaurolophus walkeri) — DinoLand

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### id=8: Parasaurolophus (Parasaurolophus walkeri)

- URL: https://www.dinoland.ai/species.html?lang=en&id=8
- Diet: Herbivore
- Era: Cretaceous
- Period: 76–73 million years ago
- Length: 10 m
- Weight: ≈2,5 t
- Height: 4 m
- Speed: ≈25 km/h
- Habitat: River valleys, levees, and seasonally flooded woodlands
- Region: North America
- Discovered: 1920, William Parks

Fact: “Hollow crest—an acoustic resonator for herd communication.”

Description: Parasaurolophus is a lambeosaurine hadrosaurid distinguished by a long, backward-projecting hollow crest enclosing an extensive nasopharyngeal passage. Computer modeling and comparisons with birds and crocodilians suggest these chambers could modulate low-frequency calls for long-distance communication, mate advertisement, and group cohesion along Late Cretaceous river corridors.

Features:
  - Crest length can approach ~1.8 m, highly variable among species
  - Could adopt bipedal or quadrupedal posture while foraging
  - Nesting horizons document parental care analogous to other hadrosaurids

Related genera: Lambeosaurus, Corythosaurus, Edmontosaurus


## Citation

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

Web: https://www.dinoland.ai/species.html?lang=en&id=8
Index: https://www.dinoland.ai/llms-en.txt