Parasaurolophus (Parasaurolophus walkeri) was a large duck-billed dinosaur from the Cretaceous of North America. It is best known for its long, tube-like crest extending backward from the skull—one of the most iconic head structures in dinosaur history.
Time Period
Parasaurolophus lived during the Late Cretaceous. In your site filter, this is grouped under Cretaceous, a time when hadrosaurs were among the most successful herbivores on the planet.
Habitat
Parasaurolophus lived in North America in environments that included river floodplains, forests, and coastal lowlands. Fossils are commonly associated with Late Cretaceous formations such as the Dinosaur Park Formation, which preserves rich ecosystems with many herbivores and predators.
Size and Appearance
Parasaurolophus reached about 9–10 meters in length. Like other hadrosaurs, it had a broad “duck-bill” for cropping plants and powerful tooth batteries for grinding vegetation. The most distinctive feature is the long cranial crest, which formed a hollow tube connected to the nasal passages.
Diet and Behavior
Parasaurolophus was an herbivore that fed on leaves, shoots, and other vegetation. Its complex teeth were well adapted for processing tough plant material. Many scientists think it lived in groups, and the crest may have helped individuals communicate—possibly producing loud calls that carried long distances.
What Was the Crest For?
The crest likely served multiple functions: sound production, visual display, and species recognition. Because the crest connects to the nasal passages, it could have acted like a resonating chamber, allowing Parasaurolophus to produce low-frequency sounds.
