Stegosaurus, with its double row of tall bony plates along the back and four long spikes on the tail, is one of the most recognizable dinosaurs. This plant-eater grew to around 9 meters long but had a famously small head and brain. It lived in the Late Jurassic, about 150 million years ago, in the floodplains of what is now the western United States.
Like many historic museum mounts, this skeleton is a composite, assembled from fossils of more than one individual to present a complete animal.