Zavodovskii 1962. New Permian representatives of Conocardiidae from north-eastern S.S.S.R. Markovskii, B. P. [Editor] New species of prehistoric plants and invertebrates of the U.S.S.R. pt. 2. Russia., Markovskii, B. P. [Editor] New species of prehistoric plants and invertebrates of the U.S.S.R. pt. 2. Russia : Minist. geol. okh. Nedr S.S.S.R., Moskva 1960: 31-33. [In Russian.]", 1962: 31-33. Chapter pagination: 31-33