	Authors	Year	Title
	Chao & Liang	1974	Permian Ammonoids. In: Handbook of the Stratigraphy and Paleontology in Southwest China. [In Chinese]. Nanjing Institute of Geology and Palaeontology, Academia Sinica: 303-307, pl.159-160, Nanjing.
	Zhao, Liang & Zheng	1978	Late Permian cephalopods of South China. Palaeontologica Sinica, 154, N.S.B,12: 1-194, fig.1-105, pl.1-34; Beijing.