	Authors	Year	Title
	Popov	1970	Ammonoidei. In: Stratigrafiya kamennougol'nykh i permskikh otlozhenii Severnogo Verkhoyan'ya. Trudy Nauchno-issledovatel'skogo instituta Geologii Arktiki, 1970: 113-140, fig.5-27, pl.13-19; Leningrad.
	Ruzhencev & Ganelin	1971	Rukovodiashchie srednekamennougol'nye ammonoidei na Omolonskom massive. Paleontologicheskii Zhurnal, 1971 (1): 49-61, fig.1-4, pl.5; Moskva.