Division Bacillariophyta Engl. & Gilg (1919) see Phylum Bacillariophyta Engl. & Gilg (1919)
   Class Bacillariophyceae Haeckel (1878) - pennates
     Subclass Bacillariophycidae D.G.Mann (1990) - raphid diatoms
       Order Bacillariales Hendey (1937)
         Family Bacillariaceae Ehrenb. (1831)
           Genus Psammodictyon D.G.Mann (1990)
             Psammodictyon corpulentum (Hendey) D.G.Mann (1990)