	Authors	Year	Title
	Leonova, Kutygin & Shilovskii	2005	New Data on the Composition and Evolution of the Permian Superfamily Popanocerataceae (Ammonoidea). Paleontologicheskii Zhurnal, 39 (5): 20-29,5 fig.,1 pl. [Paleontological Journal, 39 (5): 476-486,5 fig.,1 pl.]
	Ruzhencev	1961	Pervye ammonoidei iz Permskikh otlozheniy Verkhoyan'ya. Paleontologicheskiy Zhurnal, 1961 (2): 50-63, fig.1-10; Moskva.