LOCATION@1 -LRB- , commonly also ; meaning `` near crested lizard '' in reference to Saurolophus -RRB- is a genus of ornithopod dinosaur from the Late Cretaceous Period of what is now LOCATION@2 , about NUMBER@1 million years ago .

Parasaurolophus is a genus of ornithopod dinosaur from the Late Cretaceous Period of what is now LOCATION@2 , about NUMBER@2 million years ago .
