Diet: Hadrosaurus was an herbivore (a plant-eater). It had a toothless bill but many cheek teeth.
Anatomy: This ornithischian dinosaur was 23 to 32 feet (7-10 m) long. It had a bulky body, a stiff tail and four legs.
Fossils: Hadrosaurus was named in 1858 by paleontologist Joseph Leidy from a skull-less skeleton and hundreds of teeth that were found in Haddonfield, New Jersey, USA. Hadrosaurus is New Jersey's state fossil.
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