Kingdom Protoctista Hogg, 1860
   Phylum Bacillariophyta Engl. & Gilg (1919) - diatoms see [unranked] Diatomea Kütz. (1844)
     Class Bacillariophyceae Haeckel (1878) - pennates
       Subclass Bacillariophycidae D.G.Mann (1990) - raphid diatoms
         Order Naviculales Bessey (1907)
           Suborder Naviculineae (Bessey) Hendey (1937)
             Family Naviculaceae Kütz. (1844)
               1 Genus Navicula Bory (1822)
               2 Genus Trachyneis Cleve (1894)
               3 Genus Cymatoneis Cleve (1894)
               4 Genus Haslea Simonsen (1974)
               5 Genus Rhoikoneis Grunow (1863)