	Authors	Year	Title
	Diener	1897	The Permo-Carboniferous fauna of Chitichun. Memoir of the Geological Survey India, Palaeontologica Indica, 15:; Calcutta.
	Furnish	1966	Ammonoids of the Upper Permian Cyclolobus-Zone. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 125: 265-296, 4 figs., 2 tabl., Stuttgart