relatively small dorsal plates and greatly enlarged shoulder spines, spinae parascapulares, twice the length of the shoulder blades on which they rested via large flat bases. The plates on the neck are small and triangular. The head must have been relatively large with thirty teeth in each lower jaw. The hips are very broad and the low neural spines of the four sacral vertebrae and the first tail vertebra have been fused into a single plate. It also had robust forelimbs. The skin impressions were described by Xing Lida and colleagues in 2008. They cover a surface of and show rosettes with a central pentagonal or hexagonal scale surrounded by thirteen to fourteen ridged smaller square, pentagonal or hexagonal scales with a diameter of . Classification A study by Maidment indicated that Gigantspinosaurus is the most basal known member of the Stegosauria. , A 2018 redescription by Hao et al clarified aspects of the anatomy and found that it was an intermediate basal stegosaur, sharing basal traits with huayangosaurids as well as somewhat more advanced traits with other stegosaurs. Nevertheless, this analysis found that it was not the most basal stegosaur, as the huayangosaurids Chungkingosaurus and Huayangosaurus were considered more basal. See also Timeline of stegosaur research References Stegosaurs Late Jurassic dinosaurs of Asia Fossil taxa described in 1992 Paleontology in Sichuan Ornithischian genera