	Authors	Year	Title
	Ruan	1984	Some Devonian and Carboniferous ammonoids from Xizang. Acta Palaeontologica Sinica, 23 (5): 597-604, fig.1-4, pl.1; Peking.
	Sheng	1983	The ammonoids of late Lower Carboniferous from Yongzhu village, Xainza district in North Xizang. In: The Geology of the Qinghai-Xizang (Tibet) Plateau.-41-68, fig.1-20, pl.1-4; Beijing.