Stegosaurus

Stegosaurus was a plant-eating dinosaur that roamed western North America and Portugal about 150 million years ago. It stood out with its bony back plates and spiked tail, likely used for defense. This slow-moving giant shared its world with long-necked sauropods and meat-eating predators like Allosaurus.

• Had 17 bony plates along its back, some over 2 feet tall.
• Used four sharp tail spikes (thagomizers) to fend off attackers.
• Over 80 individual Stegosaurus fossils have been discovered so far.