	Authors	Year	Title
	Chao	1965	The Permian ammonoid-bearing formations of South China. Scientia Sinica, 14 (12): 1813-1826, fig.1-4, pl.1-2; Beijing.
	Wang	1978	[Permian Fossils]. [In: The Fossil Atlas of Southwest Area, Sichuan volume]. [In Chinese]. The Fossil Atlas of Southwest China, Sichuan, part 2: 437.