Any of various herbivorous dinosaurs of the order Ornithischia, having a pubic bone that points down and backward like that of modern birds, usually a horny beak or bill, and including the hadrosaurs and stegosaurs.
Any of an order (Ornithischia) of plant-eating dinosaurs with a birdlike pelvic structure, including the stegosaurus and triceratops.
Of the ornithischians.
Any of various dinosaurs belonging to the group Ornithischia, one of the two main divisions of dinosaurs. Ornithischians had a pelvis similar to that of modern birds (although birds are not descended from them), in which part of the pubis pointed backwards and parallel to the ischium. They also had a special bone in front of the lower jaw (called the predentary bone ), and frequently had armor plating or bony outgrowths of the skull. Ornithischians comprise all the herbivorous dinosaurs except the sauropods, and include ankylosaurs, hadrosaurs, stegosaurs, and ceratopsians.
Origin of ornithischian
- From New Latin Ornīthischia order name ornith(o)– Greek iskhion hip joint
From American Heritage Dictionary of the English Language, 5th Edition