	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.
	Kolotukhina	1938	K voprosu o klimenievykh fatsiyakh neodevona Tsentral'nogo Kazakhstana. Izvestiya Akademii Nauk SSSR, otdelenie matemat. estestven. nauk, 1938 (5-6): 671-686, 12 text-figs.