animal order - the order of animals

order Ornithischia, Ornithischia - extinct terrestrial reptiles having birdlike pelvises: armored dinosaurs (thyreophorans); bone-headed and horned dinosaurs (marginocephalians); duck-billed dinosaurs (euronithopods)

armored dinosaur - dinosaurs having bony armour

genus Stegosaurus - quadrupedal armored herbivore of the Jurassic and Cretaceous

genus Ankylosaurus - armored herbivorous dinosaurs of the Cretaceous