psittacosaurus

/ˌsɪtəkəˈsɔːɹəs/

Etymology

Coined in 1923 by Henry Fairfield Osborn from Ancient Greek ψιττακός (psittakós, “parrot”) + Ancient Greek σαύρα (saúra, “lizard”), due to its parrot-like beak

noun

Any of several dinosaurs, of the genus Psittacosaurus, that lacked horns