Parasaurolophus is a popular hadrosaurid distinguished by its hollow head crest.

The crest is believed to have functioned as a resonating chamber to produce a distinctive call useful for social interactions and herding behavior.

Dino Facts

  • Pronounced: parah-sore-owe-loaf-uss
  • Means: Beside Saurolophus
  • Size: 30 ft (9 m)
  • Where: North America (Alberta, New Mexico, Utah)
  • When: Late Cretaceous
  • Diet: Herbivorous