eukaryotes see Domain Eukaryota Chatton, 1925
   Kingdom Protozoa Goldfuss, 1818 - protozoa
     Subkingdom Dictyozoa Cavalier-Smith, 1991
       Branch Bikonta Cavalier-Smith, 1993
         Infrakingdom Neozoa Cavalier-Smith, 1993
           Parvkingdom Alveolata Cavalier-Smith, 1991 see Superphylum Alveolata Cavalier-Smith, 1991
             Phylum Dinozoa Cavalier-Smith, 1981 see Infraphylum Dinozoa Cavalier-Smith, 1981
               Subphylum Dinoflagellata Bütschli, 1885 see Superclass Dinoflagellata Bütschli, 1885
                 Class Peridinea Ehrenberg, 1830
                   1 Order Gymnodiniida Apstein, 1909 see Order Gymnodiniales Apstein (1909)
                   2 Order Ptychodiscida Fensome, Taylor, Norris, Sarjeant, Wharton & Williams, 1993 see Order Ptychodiscales Fensome, F.J.R. Taylor, G. Norris, Sarjeant, Wharton & G.L. Williams (1993)
                   3 Order Suesiida Cavalier-Smith, 1995, orth. inval. see Order Suessiida Fensome, Taylor, Norris, Sarjeant, Wharton & Williams, 1993
                   4 Order Gonayaulacida Cavalier-Smith, 1995, orth. inval. see Order Gonyaulacida Taylor, 1980
                   5 Order Peridiniida Haeckel, 1894 see Order Peridiniales Haeckel (1894)
                   6 Order Phytodiniida Christensen, 1962 ex Loeblich, 1970 see Order Phytodiniales T. Christ. ex A.R. Loebl. (1970)
                   7 Order Prorocentrida Lemmermann, 1910 see Order Prorocentrales Lemmerm. (1910)
                   8 Order Desmocapsida Pascher, 1914 see Order Desmocapsales Pascher (1914)
                   9 Order Thoracosphaerida Tangen, 1982 see Order Thoracosphaerales Tangen (1982)