	Authors	Year	Title
	Grabau	1924	Stratigraphy of China, Part 1, Paleozoic and Older. Geological Survey of China, 1-528, pls.1-6, Peking.
	Sun	1939	The uppermost Permian ammonoids from Kwangsi and their stratigraphical significance. 40th Anniversary Papers of the National University of Peking, 35-49, 2 pl.