Division Bacillariophyta Engl. & Gilg (1919) see Phylum Bacillariophyta Engl. & Gilg (1919)
Count: [*] 3c;39o
   Subdivision Bacillariophytina Medlin & Kaczmarska (2004) see Subphylum Bacillariophytina Medlin & Kaczmarska (2004)
  Count: [*] 2c;26o
     Class Mediophyceae Medlin & Kaczmarska (2004) - bipolar centrics
    Count: [*] 9o
       Order Cymatosirales Round & R.M. Crawford (1990)
      Count: -