Jiangjunosaurus, an herbivorous stegosaurian dinosaur, hails from the Upper Jurassic Shishugou Formation situated in the Junggar Basin, Xinjiang, China, from the Oxfordian age. This medium-sized stegosaur grew to lengths of about 6 meters (20 feet) and weighed approximately 2.5 metric tons (2.8 short tons).

Researchers have identified three distinct characteristics to define Jiangjunosaurus. Firstly, the teeth had symmetrical crowns, appearing wider than they were tall when viewed from the side. Secondly, the axis's spine, which denotes the second neck vertebra, presented a rectangular profile when viewed from the side, as opposed to the typical triangular shape. Lastly, the rear neck vertebrae featured large openings for veins in their sides.

Although the fossil record for Jiangjunosaurus is far from complete, it is known that this stegosaur possessed a skull with an elongated structure concerning its width. Interestingly, Jiangjunosaurus was discovered in isolation, and the choice of its name, "Jiangjunosaurus," is inspired by the fact that generals are often interred in solitary temples. "Jiangjun" translates to "general" in Chinese.