Parasaurolophus,means "Near crested lizard" is a genus of hadrosaur that lived during late cretaceous.Parasaur live with herd to avoid predator and can walk on four leg and run on two legs,even it can swim.Male parasaur crest is longer than female and young parasaurs doesn't have crest because they're still young.Scientist think the crest is used for underwater breathing or combat,but the crest is used for display and communication.parasaur defend itself by using it's loud sound.
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