The Stegosaurus back plates are some of the most recognizable features in the entire dinosaur world! About 150 million years ago, during the Late Jurassic, Stegosaurus roamed North America with two impressive rows of large, bony plates running down its back. These plates weren’t just for show—they may have helped regulate body temperature, intimidate predators, or even attract mates.

Each plate was made of tough bone covered in keratin, the same material as your fingernails. They came in various shapes and sizes, with the largest reaching over 2 feet tall! While the exact purpose of these plates is still a mystery, one thing is certain: they made Stegosaurus one of the most striking and unforgettable dinosaurs to ever walk the Earth.