The Stegosaurus is a four-legged, herbivore dinosaur that lived during the Late Jurassic period.

Stegosaurus, meaning, roof-lizard was a large, heavily built, quadruped with a distinctive combination of broad, upright plates and tail tipped with spikes, called Thagomizers.

Stegosaurus is one of the most recognizable kinds of dinosaurs and its bones are the official state fossil of Colorado.