[New Early Permian Pseudofusulinida and Parafusulinida from Darvaz.] Efimova, A. F.[New species of prehistoric plants and invertebrates of the USSR.] Vyp. 2. Part 1., Nedra, Moscow, 1968., 1970: Unpaginated. Chapter pagination: 128-136, pl. 132 [Zoological Record Volume 107]