page_title: Gigantspinosaurus
section_title: Classification
hierarchical_section_title: Gigantspinosaurus / Classification
caption_attribution_description: English: Skull of Gigantspinosaurus sichuanensis. Symtemtic position: Stegosauridae, Stegosauria, Ornithischia. Locality: Zhongquan, Zigong, Sichuan, China. Age: Late Jurassic (about 150 million years ago). Gigantspinosaurus sichuanensis is a medium-sized stegosaur donosaur. Its skull is low and elongate, with a few leaf-like teeth. This is a well-preserved lower jaw fossil of Gigantspinosaurus sichuanensis articulated with its postcranial. 中文: 四川巨棘龙头骨 分类：鸟臀目 剑龙亚目 剑龙科 产地：自贡仲权乡 时代：晚侏罗世（约1.5亿年前） 四川巨棘龙是一种中等大小的剑龙类恐龙，头骨低长，牙齿少，呈叶片状。这是一个与头后骨骼关联保存的非常完整的巨棘龙下颌骨。
context_page_description: Gigantspinosaurus is a genus of herbivorous ornithischian dinosaur from the Late Jurassic. It was a stegosaur found in China.
context_section_description: A study by Maidment indicated that Gigantspinosaurus is the most basal known member of the Stegosauria. Peng and colleagues, however, placed it in the Huayangosaurinae. 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 huayangosaurines 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.
caption: Lower jaw
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