Ornithopod definitions

Any of various herbivorous ornithischian dinosaurs of the group Ornithopoda, often having specialized dentition for grinding plant food, and including the hadrosaurs.

Any of a suborder (Ornithopoda) of ornithischian dinosaurs that walked upright on digitigrade hind feet.

One of the main types of ornithischian dinosaurs, including the hadrosaurs. Ornithopods walked on their hind legs and had three blunt toes on each foot. They lived from the late Triassic Period until the end of the Cretaceous Period.