Jingangkou Formation
Geology
Group: Wangshi
Members: unnamed (15)
Lithologies: not reported (6), "siliciclastic" (3), claystone (5), mudstone (1), sandstone (5)
Paleoenvironments: terrestrial indet. (14), crevasse splay (1)
Age range: Campanian or 83.60000 to 72.10000 Ma