chromalveolates see Supergroup Chromalveolata Adl et al., 2005
   Kingdom Protozoa Goldfuss, 1818 - protozoa
     Infrakingdom Alveolata Cavalier-Smith, 1991 see [unranked] Alveolata Cavalier-Smith, 1991
       Phylum Myzozoa Cavalier-Smith & Chao, 2004 see Subphylum Myzozoa Cavalier-Smith & Chao, 2004
         Subphylum Dinozoa Cavalier-Smith, 1981 see Infraphylum Dinozoa Cavalier-Smith, 1981
           Infraphylum Dinoflagellata Bütschli, 1885 see Superclass Dinoflagellata Bütschli, 1885
             Superclass Dinokaryota Fensome et al., 1993
               Class Peridinea Ehrenberg, 1830
                 Subclass Oxyrrhia Cavalier-Smith, 2004 [monotypic] see Class Oxyrrhea Cavalier-Smith, 1987
                   Order Oxyrrhida Sournia, 1990 [monotypic]
                     1 Genus Oxyrrhis Dujardin, 1841 see Genus Oxyrrhis Dujard. (1841)