Division [Bacillariophyta] Engl. & Gilg (1919) see Phylum Bacillariophyta Engl. & Gilg (1919)
   [Subdivision] Bacillariophytina Medlin & Kaczmarska (2004) see Subphylum Bacillariophytina Medlin & Kaczmarska (2004)
     Class Bacillariophyceae Haeckel (1878) - pennates
       Subclass Urneidophycidae Medlin (2016) - basal araphid diatoms
         01 Genus Rhaphoneis Ehrenb. (1844)
         02 Genus Talaroneis W.H.C.F. Kooistra & M. De Stefano (2004)
         03 Genus Delphineis G.W. Andrews (1977)
         04 Genus Asteroplanus C. Gardner & R.M. Crawford (1997)
         05 Genus Asterionellopsis Round (1990)
         06 Genus Plagiogramma Grev. (1859)
         07 Genus Neofragillaria Medlin (2016) see Genus Neofragilaria T.V. Desikachary, A.K.S.K. Prasad & P. Prema (1987)
         08 Genus Dimmeregramma Wolle (1894) see Genus Dimeregramma Ralfs (1861)
         09 Genus Psammoneis S. Sato, Kooistra & Medlin (2008)
         10 Genus Pseudostriatella S. Sato, Mann & Medlin (2008)
         11 Genus Striatella C.Agardh (1832)