Hadrosaurids or duck-billed dinosaurs are members of the superfamily Hadrosauroidea, and include ornithopods such as Edmontosaurus and Parasaurolophus.
They were common herbivores in the Upper Cretaceous of Asia, Europe, and North America.
They are descendants of the Upper Jurassic/Lower Cretaceous iguanodontid dinosaurs, and have similar body plans..
For more information about the topic Hadrosaurid, read the full article at Wikipedia.org, or see the following related articles:
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