Chuanjie Formation Explained

Chuanjie Formation
Type:	Geological formation
Age:	Aalenian-Bajocian ~
Period:	Bajocian
Prilithology:	Mudstone, siltstone
Otherlithology:	Conglomerate
Region:	Yunnan
Coordinates:	25°N 102.1°W
Paleocoordinates:	25.1°N 108.6°W
Underlies:	Laoluocun Formation
Overlies:	Lufeng Formation
Thickness:	221m (725feet)
Extent:	Yunnan Basin

The Chuanjie Formation, is a geological formation in Yunnan, China. It dates back to the Middle Jurassic.^[1] It was formerly referred to as being the lower member of the "Upper Lufeng" as opposed to the underlying "Lower Lufeng" now referred to as the Lufeng Formation. Tracks of theropods and sauropods,^[2] as well as thyreophorans^[3] are known from the formation.

Fossil content

Vertebrates^[4]
Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Analong	A. chuanjieensis	Quarry 1, Lao Chang Qing			A mamenchisaurid sauropod^[5]
Chuanjiesaurus	C. anaensis.	Quarry 1, Lao Chang Qing		"Partial postcranial skeleton"^[6]
Shidaisaurus	S. jinae	Quarry 1, Lao Chang Qing		"Partial postcranial skeleton"
Xinjiangchelys	X. oshanensis^[7]	Quarry 1, Lao Chang Qing			Xinjiangchelyid turtle

See also

• List of dinosaur-bearing rock formations

References

Bibliography

• • • Tong . Haiyan . Dong . Zhiming . Wang . Tao . 2015. A revision of Xinjiangchelys oshanensis, and new material from the Middle Jurassic of Lufeng, Yunnan Province, China . . 186 . 1 . 43–49 . 10.2113/gssgfbull.186.1.43 . 0037-9409.

Notes and References

1. Weishampel, David B; et al. (2004). "Dinosaur distribution (Middle Jurassic, Asia)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 541–542. .
2. Xing et al., 2014
3. Xing et al., 2019
4. Web site: Quarry 1, Lao Chang Qing (Jurassic of China). Fossilworks. 17 December 2021.
5. Ren et al., 2020
6. "Table 13.1," in Weishampel, et al. (2004). Page 261.
7. Tong et al., 2015