Division Bacillariophyta Engl. & Gilg (1919) see Phylum Bacillariophyta Engl. & Gilg (1919)
Status: extant
   Class Bacillariophyceae Haeckel (1878) - pennates
  Status: extant
     Subclass Bacillariophycidae D.G.Mann (1990) - raphid diatoms
    Status: extant
       Order Naviculales Bessey (1907)
      Status: extant
         Suborder Neidiineae D.G.Mann (1990)
        Status: extant
           Family Cavinulaceae D.G.Mann (1990)
          Status: extant
             Genus Cavinulaᵀ D.G.Mann & Stickle (1990)
            Status: extant
               Cavinula variostriata (Krasske) D.G.Mann (1990)
              Status: extant