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.
Wang	1981	Carboniferous ammonoids from Eastern Xinjiang.[In Chinese, with English summary]. Acta Palaeontologica Sinica, 20 (5): 468-481, fig.1-12, pl.1,2; Beijing.
Work, Mapes & Thompson	1988	A new prodromitid ammonoid genus from the Hannibal Shale (Lower Mississippian) of Missouri. Journal of Paleontology, 62 (5): 772-778, fig.1-5; Lawrence, Kansas.