	Authors	Year	Title
	Bogoslovskaya, Leonova & Shkolin	1995	The Carboniferous-Permian boundary and ammonoids from the Aidaralesh section, southern Urals. Journal of Paleontology 69: 288-301, 12 figs., Lawrence, KS.
	Maksimova	1948	Ammonity iz nizhnei chasti shvagerinovykh sloev reki Yurezani. Trudy Paleontologicheskogo Instituta Akademiia Nauk SSSR, 14 (4): 1-42, fig.1-23, pl.1-4; Moskva.
	Ruzhencev	1951	Nizhnepermskie ammonity yuzhnogo Urala. 1.Ammonity Sakmarskogo Yarusa. Trudy Paleontologicheskogo Instituta Akademiya Nauk SSSR, 33: 1-186, fig.1-62, phot.1-8, pl.1-15; Moskva.