1. Any of several four-footed herbivorous dinosaurs with enormous beaked skulls; of the late Cretaceous in North America and Mongolia
   "Triceratops is perhaps the most famous horned dinosaur";
   - ceratopsian

Derived forms: horned dinosaurs

Type of: ornithischian, ornithischian dinosaur

Part of: Ceratopsia, suborder Ceratopsia