ornithopods. The hadrosaurs, or duck-billed dinosaurs, received their name from their broad, flattened, elongated snouts and their toothless beaks. Their sets of grinding teeth and cheek pouches were extremely well adapted to browsing on vegetation.

What does the name hadrosaur mean?

Hadrosaurus (/ˌhædrəˈsɔːrəs/; meaning "bulky lizard") is a genus of hadrosaurid ornithopod dinosaurs that lived in North America during the Late Cretaceous Period in what is now the Woodbury Formation about 80 million to 78 million years ago. ... Most of the preserved elements are very robust, unusual traits in hadrosaurs.

How did Parasaurolophus get its name?

Meaning "near crested lizard", the name Parasaurolophus is derived from the Greek para/παρα "beside" or "near", saurus/σαυρος "lizard" and lophos/λοφος "crest". ... William Parks named the specimen P. walkeri in honor of Sir Byron Edmund Walker, Chairman of the Board of Trustees of the Royal Ontario Museum.