Wuerhosaurus was stegosaurid (related to Stegosaurus) that had bony rounded plates along its back and 4 bony spikes at the tip of its tail (thagomizers). It had a shorter body and wider hip bones than other stegosaurids. It was 27 feet (8.1m) long and 6 feet (1.8m) tall at the hips, weighing around 4 tons. A partial fossil (without a complete skull) has been found in Xinjiang, China.