The most bizarre was that the crest was some sort of snorkel used for the dinosaur to breathe while swimming. The purpose of this crest remained a mystery to scientists for years and many theories were proposed, such as a weapon against carnivores, a specialized gland for storing salt or a feature to push aside branches. The most distinctive feature, and which has made it extremely iconic, is the long crest at the back of its head. Like other members of the hadrosaur family, Parasaurolophus walked mostly on four legs, but could raise on its back two when needed. Parasaurolophus, sometimes nicknamed Parasaur, especially by the general public, is a large and distinctive herbivorous dinosaur from Late Cretaceous, North America.
