Division Bacillariophyta Engl. & Gilg (1919) see Phylum Bacillariophyta Engl. & Gilg (1919)
Count: 3c;45o;91f;291g;308s
   Class Coscinodiscophyceae Round & R.M. Crawford (1990) - radial centrics
  Count: 22o;40f;122g;1s
     Subclass Cymatosirophycidae Round & R.M. Crawford (1990) see Class Mediophyceae Medlin & Kaczmarska (2004)
    Count: [f] 1o;2f;11g
       1 Order Cymatosirales Round & R.M. Crawford (1990)
      Count: [f] 2f;11g