	Authors	Year	Title
	Ruzhencev	1938	Ammonei Sakmarskogo yarusa i ikh stratigraficheskoe znachenie. Problemy Paleontologii, 4: 187-285, fig.1-19, pl.1-7; Moskva.
	Zheng, Zong & Huang	2020	Early Carboniferous ammonoids from the Nanduan Formation in the Changning-Menglian Belt, western Yunnan, China Palaeoworld 29 (2020) 88–95