Chaochuan Formation

Chaochuan Formation
Stratigraphic range: Albian-Cenomanian ~112–94  Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Formation
Underlies	Fangyan Formation
Overlies	Early Cretaceous tuff and Moshishan Group
Thickness	up to 518 metres (1,699 ft)
Lithology
Primary	Sandstone, siltstone
Other	Tuff
Location
Coordinates	28°42′N119°12′E / 28.7°N 119.2°E / 28.7; 119.2
Approximate paleocoordinates	35°36′N117°00′E / 35.6°N 117.0°E / 35.6; 117.0
Region	Zhejiang Province
Country	China
Chaochuan Formation (China) Show map of China Chaochuan Formation (Zhejiang) Show map of Zhejiang

The Chaochuan Formation is a geologic formation in China (Zhejiang Province). It is made up of purplish red calcarenaceous, muddy siltstone, fine-grained sandstone with interbeds of tuffaceous sandstone and conglomerate or rhyolitic tuff. ^[1]

Fossil content

The following fossils were reported from the formation:

• Dongyangopelta yangyanensis ^[2]
• Therizinosauridae indet. (once known as "Chilantaisaurus" zheziangensis) ^{[3] [4] [5]}
• Zhejiangosaurus lishuiensis ^[6]

References

1. (2009) Chaochuan Formation. In: Zhang S. (eds) Geological Formation Names of China (1866–2000). Springer, Berlin, Heidelberg
2. Rongjun Chen; Wenjie Zheng; Yoichi Azuma; Masateru Shibata; Tianliang Lou; Qiang Jin; Xingsheng Jin (2013). "A New Nodosaurid Ankylosaur from the Chaochuan Formation of Dongyang, Zhejiang Province, China" . Acta Geologica Sinica (English Edition). 87 (3): 658–671. Bibcode:2013AcGlS..87..658C. doi:10.1111/1755-6724.12077.
3. Z. Dong. 1979. Cretaceous dinosaurs of Hunan, China. Mesozoic and Cenozoic Red Beds of South China: Selected Papers from the "Cretaceous-Tertiary Workshop", Institute of Vertebrate Paleontology and Paleoanthropology & Nanjing Institute of Paleontology (eds.), Science Press, Nanxiong, China 342-350
4. M.-p. Qian, Z.-y. Zhang, Y. Jiang, Y.-g. Jiang, Y.-j. Zhang, R. Chen, and G.-f. Xing. 2012. [Cretaceous therizinosaurs in Zhejiang of eastern China]. Journal of Geology 36(4):337-348
5. L. E. Zanno. 2010. Osteology of Falcarius utahensis (Dinosauria: Theropoda): characterizing the anatomy of basal therizinosaurs. Zoological Journal of the Linnean Society 158(1):196-230
6. Lü Junchang; JIN Xingsheng; SHENG Yiming; LI Yihong; WANG Guoping; Yoichi AZUMA (2007). "New nodosaurid dinosaur from the Late Cretaceous of Lishui, Zhejiang Province, China". Acta Geologica Sinica (English ed.). 81 (3): 344–350. doi:10.1111/j.1755-6724.2007.tb00958.x.