	Authors	Year	Title
	Bogoslovsky	1971	Devonskie ammonoidei. II. Goniatity. Trudy paleont. Inst.Akad. Nauk SSSR, 127: 1-228, fig.1-67, pl.1-19; Moskva.
	Perna	1914	Ammonei verkhnego neodevona vostochnogo sklona Urala. Trudy Geologicheskogo Komiteta, nov. ser., 99: 1-114, pl.1-4.