	Authors	Year	Title
	Bogoslovsky	1958a	K evolutsii semeystva Gephuroceratidae Frech, 1901. Izv. Akad. Nauk SSSR, Ser. Biol., 1958 (3): 336-243, fig.1-3; Moskva.
	Bogoslovsky	1969	Devonskie ammonoidei. I. Agoniatity. Trudy paleont. Inst., 124: 1-341, fig.1-104, pl.1-29; Moskva.