Kingdom Protoctista Hogg, 1860
Status: extant
   Phylum Bacillariophyta Engl. & Gilg (1919) - diatoms see [unranked] Diatomea Kütz. (1844)
  Status: extant
     Class Fragilariophyceae Round (1990) - araphid, pennate diatoms see Class Bacillariophyceae Haeckel (1878)
    Status: extant
       Subclass Fragilariophycidae Round (1990) - core araphid diatoms
      Status: extant
         Order Rhabdonematales Round & R.M. Crawford (1990)
        Status: extant
           Family Rhabdonemataceae Round & R.M. Crawford (1990)
          Status: extant
             1 Genus Rhabdonema Kütz. (1844)
            Status: extant
             2 Genus Striatella C.Agardh (1832)
            Status: extant
             3 Genus Tessella Ehrenb. (1836)
            Status: extant
             4 Genus Grammatophora Ehrenb. (1840)
            Status: extant
             5 Genus Cyclophora Castrac. (1878)
            Status: extant