New early Triassic Ceratitida from Mangyshlak. New species of prehistoric plants and invertebrates in the U.S.S.R., Markovskii, B. P. [Editor] New species of prehistoric plants and invertebrates in the U.S.S.R. pt. 2. Russia : Minist, geol. Okh. Nedr S.S.S.R., Moskva", 1960: 139-159. Chapter pagination: 139-159. 148 [Zoological Record Volume 99]