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)
           01 Genus Bacillaria J.F.Gmel. (1788)
           02 Genus Hantzschia Grunow (1877)
           03 Genus Psammodictyon D.G.Mann (1990)
           04 Genus Tryblionella W.Sm. (1853)
           05 Genus Cymbellonitzschia Hust. (1924)
           06 Genus Gomphonitzschia Grunow (1868)
           07 Genus Gomphotheca Hendey & P.A. Sims (1982)
           08 Genus Nitzschia Hassall (1845)
           09 Genus Denticula Kütz. (1844)
           10 Genus Denticulopsis Simonsen (1979)
           11 Genus Fragilariopsis Hust. (1913)
           12 Genus Cylindrotheca Rabenh. (1859)
           13 Genus Simonsenia Lange-Bert. (1979)
           14 Genus Cymatonitzschia Simonsen (1974)
           15 Genus Perrya Kitton (1874)