Sanchuansaurus

{{Short description|Genus of extinct pareiasaur reptiles}}

{{distinguish|Sanjuansaurus}}

{{Speciesbox

| fossil_range = Late Permian,{{Cite journal |last1=Benton |first1=Michael J. |date=2016-07-13 |title=The Chinese pareiasaurs |journal=Zoological Journal of the Linnean Society |language=en |volume=177 |issue=4 |pages=813–853 |doi=10.1111/zoj.12389|hdl=1983/6d1a4f9b-a768-4b86-acb1-b3ad1f7ee885 |hdl-access=free }} {{fossilrange|Changhsingian}}

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| genus = Sanchuansaurus

| species = pygmaeus

| authority = Gao, 1988

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Sanchuansaurus is an extinct genus of pareiasaur from the late Permian Sunjiagou Formation of China. The genus contains a single species, S. pygmaeus, known from a partial maxilla and left leg bones.{{Cite journal |last1=Gao |first1=Keqin |date=1989-06-01 |title=Pareiasaurs from the Upper Permian of north China |journal=Canadian Journal of Earth Sciences |language=en |volume=26 |issue=6 |pages=1234–1240 |doi=10.1139/e89-104 |issn=0008-4077}} A 2013 study suggested that both Sanchuansaurus and another Chinese pareiasaur, Huanghesaurus, were synonymous with Shansisaurus.{{Cite journal |last1=Li |first1=Xing-Wen |last2=Liu |first2=Jun |date=2013 |title=New specimens of pareiasaurs from the Upper Permian Sunjiagou Formation of Liulin, Shanxi and their implications for the taxonomy of Chinese pareiasaurs |journal=Vertebrata PalAsiatica |language=en |volume=51 |issue=3 |pages=199–204 |url=http://www.ivpp.cas.cn/cbw/gjzdwxb/xbwzxz/201309/P020130922604050221921.pdf}} However, this has not been followed in future research, with later papers considering Sanchuansaurus to be distinct, with Huanghesaurus and Shansisaurus possibly being synonymous with Shihtienfenia, another Chinese pareiasaur.