Parasaurolophus

&nbsp Parasaurolophus was a lambiosaurid related to corythosaurus. Parasaurolophus' crest was for communication. No two crests were alike. Parasaurolophus was 20ft long and was a herbivore.

Parasaurolophus is a hadrosaurid, part of a diverse family of Cretaceous dinosaurs known for their range of bizarre head adornments. This genus is known for its large, elaborate cranial crest, which at its largest forms a long curved tube projecting upwards and back from the skull. Charonosaurus from China, which may have been its closest relative, had a similar skull and potentially a similar crest. The crest has been much discussed by scientists; the consensus is that major functions included visual recognition of both species and sex, acoustic resonance, and thermoregulation. It is one of the rarer duckbills, known from only a handful of good specimens.