Up to 9 meters


5 to 7 tons

When it Lived:

Late Jurassic period, about 150 million years ago.

Stegosaurus was an herbivorous (plant-eating) dinosaur from the late Jurassic period. Its fossils are found in the western United States and Portugal. Stegosaurus would have lived alongside dinosaurs such as Apatosaurus, Brachiosaurus, and Allosaurus.

They had short fore limbs, but longer hind limbs, and tails held high in the air. Due to their distinctive combination of broad plates and spiked tails, Stegosaurus is one of the most recognizable dinosaurs. The function of the plates is still debated.