Wuerhosaurus ordosensis (IVPP V6877—a fragmentary skeleton lacking the skull, and referred specimens IVPP V6878 and 6879 from the same locality) was discovered in the Ejinhoro Formation, Ordos Basin of Inner Mongolia, in 1988. A couple of meters shorter than Wuerhosaurus homheni, perhaps two tons lighter and with a shorter neck, Wuerhosaurus ordosensis was named in 1993 by Zhiming Dong. Maidment et al. renamed it Stegosaurus homheni in 2008, but most paleontologists still cast suspicious glances at it. Wuerhosaurus mongoliensis (PIN Coll.—back and tail vertebrae and a lump of pelvic girdle from the Khukhtyk Formation) was coined by freelancer Roman Ulansky in 2014. Apparently, its hip is more massive and the spines on its vertebra are thicker and higher than other species of Wuerhosaurus, and it sports a relatively large spinal canal. But because of Ulansky's habit of naming dinosaurs willy-nilly based on material that other paleontologists have already dismissed as tat, plus the fact that his papers are only ever released in Russian, this critter may never be taken seriously by experts. Or so we thought. It was officially renamed Mongolostegus exspectabilis by Tumanova and Alifanov in 2018.