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Suining Formation
Stratigraphic range: Late Jurassic–Early Cretaceous PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Unit of	Sichuan Basin
Underlies	Penglaizhen Formation
Overlies	Upper Shaximiao Formation
Thickness	Several hundred meters
Lithology
Primary	Mudstone
Other	Sandstone, siltstone
Location
Region	Asia
Country	China

The Suining Formation (simplified Chinese: 遂宁组; traditional Chinese: 遂寧組; pinyin: Suìníng Zǔ) is a geological formation in China whose strata date back to the Early Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation. A 2019 paper shows zircon dating of the Suining Formation with a much younger age for the classically thought of Late Jurassic formation; the average age of the dating being roughly 114 myo or late upper Aptian.^[1]

Paleobiota

Dinosaurs

Genus	Species	Presence	Notes	Images
Mamenchisaurus^[2]	M. anyuensis^[2]	Geographically located in Sichuan, China.^[2]
Qijianglong^[3]	Q. guokr

Fish

Genus	Species	Presence	Notes	Images
Beiduyu^[4]	B. qijiangensis

References

^ Wang, Jun; Norell, Mark A.; Pei, Rui; Ye, Yong; Chang, Su-Chin (July 2019). "Surprisingly young age for the mamenchisaurid sauropods in South China". Cretaceous Research. 104: 104176. Bibcode:2019CrRes.10404176W. doi:10.1016/j.cretres.2019.07.006.
^ ^a ^b ^c Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Jurassic, Asia)". In Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (eds.). The Dinosauria (2nd ed.). Berkeley: University of California Press. pp. 550–552. ISBN 0-520-24209-2.
^ Lida Xing; Tetsuto Miyashita; Jianping Zhang; Daqing Li; Yong Ye; Toru Sekiya; Fengping Wang; Philip J. Currie (2015). "A new sauropod dinosaur from the Late Jurassic of China and the diversity, distribution, and relationships of mamenchisaurids". Journal of Vertebrate Paleontology. 35 (1): e889701. doi:10.1080/02724634.2014.889701. S2CID 86062974.
^ Alison M. Murray; Lida Xing; Julien Divay; Juan Liu; Fengping Wang (2015). "A Late Jurassic freshwater fish (Ginglymodi, Lepisosteiformes) from Qijiang, Chongqing, China". Journal of Vertebrate Paleontology. 35 (2): e911187. Bibcode:2015JVPal..35E1187M. doi:10.1080/02724634.2014.911187. S2CID 85946657.

Bibliography

Weishampel, David B.; Dodson, Peter; Osmólska, Halszka, eds. (2004). The Dinosauria (2nd ed.). Berkeley: University of California Press. pp. 1–880. ISBN 0-520-24209-2. Retrieved 2019-02-21.

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Paleobiota

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