Chuanjie Formation

The Chuanjie Formation (simplified Chinese: 川街组; traditional Chinese: 川街組; pinyin: Chuānjiē Zǔ), 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.

Chuanjie Formation
Stratigraphic range: Aalenian-Bajocian ~174–168 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Underlies	Laoluocun Formation
Overlies	Lufeng Formation
Thickness	221 m (725 ft)
Lithology
Primary	Mudstone, siltstone
Other	Conglomerate
Location
Coordinates	25.0°N 102.1°E / 25.0; 102.1
Approximate paleocoordinates	25.1°N 108.6°E / 25.1; 108.6
Region	Yunnan
Country	China
Extent	Yunnan Basin
Chuanjie Formation (China) Show map of China Chuanjie Formation (Yunnan) Show map of Yunnan

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[1]	C. anaensis.[1]	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