	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.
	Chernyshev	1887	Fauna srednego i verkhnego devona zapadnago sklona Urala. Trudy geol. Kom., 3 (3): I-XII, 1-208, pl.1-14; S.-Peterburg.