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 Apicomplexa Levine, 1970 see Infraphylum Apicomplexa Levine, 1970
           Infraphylum Sporozoa Leuckart, 1879 see Superclass Sporozoa Leuckart, 1879
             Class Gregarinea Bütschli, 1882 see Subclass Gregarinasina Dufour, 1828
               1 Genus Monocystis Stein, 1848
               2 Genus Ophriocystis see Genus Ophryocystis Schneider, 1883