Theriot, E. & Kociolek, J.P. (1986). Two new Pliocene species of Cyclostephanos (Bacillariophyceae) with comments on the classification of the freshwater Thalassiosiraceae. Journal of Phycology, 22(2): 121-128, figs. 1-16
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Theriot, E. & Kociolek, J.P.
1986
Two new Pliocene species of Cyclostephanos (Bacillariophyceae) with comments on the classification of the freshwater Thalassiosiraceae