Division Bacillariophyta Engl. & Gilg (1919) see Phylum Bacillariophyta Engl. & Gilg (1919)
Count: 3c;45o;91f;291g;308s
   Class Fragilariophyceae Round (1990) - araphid, pennate diatoms see Class Bacillariophyceae Haeckel (1878)
  Count: 12o;14f;54g;8s
     Subclass Fragilariophycidae Round (1990) - core araphid diatoms
    Count: [f] 12o;14f;54g;8s
       Order Climacospheniales Round (1990)
      Count: [f] 1f;2g
         Family Climacospheniaceae Round (1990)
        Count: 2g
           1 Genus Climacosphenia Ehrenb. (1843)
          Count: -
           2 Genus Synedrosphenia (H. Perag.) Azpeitia (1911)
          Count: -