Reproduction of original drawings of Cocconeis skvortzowii A–C protologue, Skvortzow (1937), pl. 5, figs 7, 8, 5 D, E Sheshukova (1950), 86, table 30, fig. 10а, b, reproduction from Skvortzow (1937) F–H Sheshukova (1951), 193, fig. 104, а–c I–K Skabichevsky (1977), 127, figs 2, 9, 11, 10 A, D, F, I raphe valve B, C E G, H, J, K sternum valve. Scale bar: 10 µm.