	Authors	Year	Title
	Maksimova	1940	The first representative of the genus Bisatoceras from the Upper Paleozoic of the Urals. Comptes Rendus (Doklady) de l'Academie des Sciences de l'URSS,28 (9): 862-864, 1 text-fig.
	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.