	Authors	Year	Title
	Nikolaeva	2013	New Viséan and Serpukhovian ammonoids from the Verkhnyaya Kardailovka section, eastern slope of the South Urals Paleontologicheskii zhurnal, 2013 (4): 39-50. Moscow.
	Ruan	1981b	Carboniferous Ammonoid faunas from Qixu in Nandan of Guangxi. Mem. Nanjing Inst. Geol. Palaeont., Acad. Sinica, 15: 153-232, fig.1-89, pl.1-15; Nanjing.