The Parasaurolophus is a duck-billed dinosaur with a unique crest that lived 70 million to 80 million years ago. It stood around 16 feet tall and is estimated to have weighed 6,000 to 8,000 pounds.

Parasaurolophus, and Edmontosaurus. The Elgol dinosaur is one of the oldest known ornithopod body fossils, predating the period when the group became more prominent in the later Cretaceous ...