|any of various quadrupedal herbivorous ornithischian dinosaurs constituting the suborder Ankylosauria, which were most abundant in upper Cretaceous times and had a very heavily armoured tanklike body|
|[C20: from New Latin, from Greek ankulos crooked + |
|ankylosaurus (āng'kə-lō-sôr'əs) or ankylosaur (āng'kə-lō-sôr'əs) Pronunciation Key
A large, herbivorous dinosaur of the genus Ankylosaurus of the Cretaceous Period. Ankylosaurs had a squat, heavily armored body and a clubbed tail.