Phylum Dinoflagellata Engl. (1903) see Superclass Dinoflagellata Bütschli, 1885
Count: [*†*] 4c;13o;53f;257g; †1o;11f;512g [2 Mar 2016]
   Subphylum Dinokaryota Fensome, F.J.R. Taylor, G. Norris, Sarjeant, Wharton & G.L. Williams (1993)
  Count: [*†*] 3c;12o;49f;243g; †1o;10f;511g [2 Mar 2016]
     Class Dinophyceae Pascher (1914)
    Count: [*†*] 10o;40f;207g; †1o;10f;511g [2 Mar 2016]
       Subclass Gymnodiniphycidae Fensome, F.J.R. Taylor, G. Norris, Sarjeant, Wharton & G.L. Williams (1993)
      Count: [*†*] 3o;13f;62g; †12g [22 Feb 2016]
         Order Ptychodiscales Fensome, F.J.R. Taylor, G. Norris, Sarjeant, Wharton & G.L. Williams (1993) [monotypic]
        Count: [*†*] 3f;13g; †4g [22 Feb 2016]
           Family Ptychodiscaceae Lemmerm. (1899)
          Count: [*†*] 6g; †4g [22 Feb 2016]
             Subfamily †Dinogymnioideae Fensome, F.J.R. Taylor, G. Norris, Sarjeant, Wharton & G.L. Williams (1993)
            Count: [†*] †4g [22 Feb 2016]
               1 Genus †Dinogymnium Evitt, Clarke & Verdier (1967)
              Count: -
               2 Genus †Alisogymnium Lentin & Vozzhennikova (1990)
              Count: -
               3 Genus †Amphigymnium Lentin & Vozzhennikova (1990)
              Count: -
               4 Genus †Yolkinigymnium Lentin & Vozzhennikova (1990)
              Count: -