GLEZER, Z.I., I.V. MAKAROVA, A.I. MOISSEEVA, & V. NIKOLAEV (eds.) 1992 The diatoms of the USSR. Fossil and Recent. Vol. II fasc. 2. Stephanodiscaceae, Ectodictyonaceae, Paraliaceae, Radialiplicataceae, Pseudopodosiraceae, Trochosiraceae, Melosiraceae, Aulacosiraceae Nauka, St. Petersburg 95 pp., 68 pls. Russian; new families, genera, species, combinations