The Chaochuan Formation is a
geologic formation
A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics ( lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exp ...
in
China
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...
(
Zhejiang Province
Zhejiang ( or , ; , also romanized as Chekiang) is an eastern, coastal province of the People's Republic of China. Its capital and largest city is Hangzhou, and other notable cities include Ningbo and Wenzhou. Zhejiang is bordered by Jiangs ...
). It is made up of purplish red calcarenaceous, muddy siltstone, fine-grained sandstone with interbeds of tuffaceous sandstone and conglomerate or rhyolitic tuff.
Fossil content
The following fossils were reported from the formation:
* ''
Dongyangopelta yangyanensis''
*
indet. (once known as "
Chilantaisaurus
''Chilantaisaurus'' (" lizard") is a genus of large theropod dinosaur, possibly a neovenatorid or a primitive coelurosaur, from the Late Cretaceous Ulansuhai Formation of China (Turonian age, about 92 million years ago). The type species, ''C. ta ...
" ''zheziangensis'')
* ''
Zhejiangosaurus lishuiensis''
[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.]
References
{{reflist
Geologic formations of China
Cretaceous System of Asia
Albian Stage
Cenomanian Stage
Sandstone formations
Siltstone formations
Tuff formations
Lacustrine deposits
Paleontology in Zhejiang