	Authors	Year	Title
	Bogoslovsky	1963	Drevneyshie Devonskie ammonoidei Urala. Paleontologicheskiy Zhurnal, 1963, 2: 26-37, fig.1-5; Moskva.
	Bogoslovsky	1969	Devonskie ammonoidei. I. Agoniatity. Trudy paleont. Inst., 124: 1-341, fig.1-104, pl.1-29; Moskva.