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
         Genus Asteroplanus C. Gardner & R.M. Crawford (1997)