Corythosaurus, also known as Guanlong, Cockscomb Dragon, Helmet Headed Dragon or Helmet Headed Dragon, meaning "helmet lizard", is a genus of hadrosaurids in the subfamily Leucisaurinae. It lived in North America during the Upper Cretaceous period, about 75 million years ago. It has a duck like face and a high helmet like protrusion on top of its head, hence its name. Helmeted dragons have a gentle temperament and lack defensive equipment such as spines and claws, which means they can only rely on their sharp and developed visual and auditory organs to prevent predator attacks. It is a herbivorous dinosaur that mainly feeds on pine leaves, fruits, tender branches, and magnolia leaves.