	Authors	Year	Title
	Popov	1960	Verkhnekamennougol'nye ammonoidei Orulganskogo Khrebta. Trudy Nauchno-Issl. Inst. Geol. Arktiki, Minist. Geol. SSSR, 1960: 82-92, fig.1-2, pl.1; Leningrad.