	Authors	Year	Title
	Ruan	1981a	Devonian and earliest Carboniferous Ammonoids from Guangxi and Guizhou. Mem. Nanjing Inst. Geol. Paleont. Academia Sinica, 15: 1-152, fig.1-102, pl.1-33; Beijing.
	Ruan	1995	Review on the Carboniferous Ammonoid Zones in China. Palaeontologia Cathayana, 6 (1995): 345-364.