Three Ornithischian Dinosaurs to Know | AMNH https://www.amnh.org/explore/news-blogs/news-posts/know-your-ornithischian-dinosaurs
Find out what makes three Ornithischian dinosaurs stand out from the pack, from Stegosaurus’ plated armor to duck-billed dinosaurs’ crests.
defense against predators like the saurischian predator Allosaurus