Tuojiagnosaurus is a relatively famous stegosaur from the Oxfordian age of the Late Jurassic, about 160 million years ago. It was the first stegosaur ever discovered in China, and it was found in the Upper Shaximiao Formation in Sichuan Province, China. It is known from a fairly complete skeleton and much more juvenile material. It was very similar to Stegosaurus, about 7 meters long and and 2 meters high. It had a very narrow and low head, a bulky body, and short limbs. It had two rows of plates along the spine, and they get taller on the hips. Its back plates were fairly pointed and triangular, and all the plates were thick in the center, making them seem more like modified spikes. It had about 17 pairs of plates and spikes. It had two outward-pointing robust spikes on the end of the tail - its thagomizer. It ate low-lying, ground vegetation. It probably used its thagomizer to protect itself against theropods such as Sinraptor. I’ve actually seen a mounted display of this skeleton in London.