 A smaller stegosaur from the Ejinhoro Formation in the Ordos Basin in Inner Mongolia, was found in 1988.When the specimen (IVPP V.6877) was described by Dong in 1993, it was named "W. ordosensis", as it was from a similar age and had a similar anatomy.The holotype of the species includes a nearly complete torso, consisting of three cervical vertebrae, all eleven dorsal vertebrae (with attached ribs), a complete sacrum with a right ilium, and the first five caudal vertebrae, all articulated.