{{short description|Geologic formation in China}} {{Infobox rockunit | name = Toutunhe Formation | image = | caption = | type = [[Geological formation]] | age = [[Oxfordian (stage)|Oxfordian]]-[[Kimmeridgian]], <br>{{fossilrange|161|153}} | period = Middle Jurassic | prilithology = [[Mudstone]], [[Sandstone]] | otherlithology = | namedfor = | namedby = | region = [[Xinjiang]] | country = [[China]] | coordinates = | unitof = | subunits = | underlies = [[Qigu Formation]] | overlies = [[Xishanyao Formation]] | thickness = Around 400 metres | extent = Southern Junggar Basin | area = | map = | map_caption = }}

The '''Toutunhe Formation''' is a [[Late Jurassic]] geological [[Formation (geology)|formation]] in China, specifically dating to the [[Oxfordian (stage)|Oxfordian]] and [[Kimmeridgian]] stages.<ref>{{Cite journal |last=Huang |first=Diying |date=2019 |title=Jurassic integrative stratigraphy and timescale of China |journal=Science China Earth Sciences |language=en |volume=62 |issue=1 |pages=223–255 |doi=10.1007/s11430-017-9268-7 |bibcode=2019ScChD..62..223H |s2cid=134359019 |issn=1674-7313}}</ref> [[Dinosaur]] remains diagnostic to the [[genus]] level are among the fossils that have been recovered from the formation.<ref name="dinosaurdistribution">Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.</ref> The lower portion of the formation consists of grey to reddish mudstone with medium to coarse grained cross bedded sandstone, while the upper portion consists primarily of brown-red-purple mudstone, interbedded with fine to medium grained laminated sandstone.<ref>{{Cite journal|date=April 2014|title=Jurassic sedimentary evolution of southern Junggar Basin: Implication for palaeoclimate changes in northern Xinjiang Uygur Autonomous Region, China|url=https://www.sciencedirect.com/science/article/pii/S2095383615300687|journal=Journal of Palaeogeography|volume=3|issue=2|pages=145–161|doi=10.3724/SP.J.1261.2014.00049|doi-broken-date=12 July 2025|bibcode=2014JPalG...3..145L |last1=Li |first1=Shun-Li |last2=Yu |first2=Xing-He |last3=Tan |first3=Cheng-Peng |last4=Steel |first4=Ronald |last5=Hu |first5=Xiu-Fang }}</ref>

==Paleofauna== ''[[Tianchisaurus nedegoapeferima]]'' - "Partial skeleton."<ref name="table-17-1-368">"Table 17.1," in Weishampel, et al. (2004). Page 368.</ref>

==See also== {{Portal|Earth sciences|Paleontology|Dinosaurs||}} * [[List of dinosaur-bearing rock formations]] ** [[List of stratigraphic units with few dinosaur genera]]

==Footnotes== {{Reflist}}

==References== * Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp.&nbsp;{{ISBN|0-520-24209-2}}.

[[Category:Jurassic China]] [[Category:Jurassic System of Asia]] [[Category:Geologic formations of China]]

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