Kingdom Chromalveolata Adl et al., 2005 see Kingdom Chromista Caval.-Sm. (1981)
   Infrakingdom Alveolata Cavalier-Smith, 1991 see [unranked] Alveolata Cavalier-Smith, 1991
     Phylum Myzozoa Cavalier-Smith & Chao, 2004 see Subphylum Myzozoa Cavalier-Smith & Chao, 2004
       Superclass Syndina Cavalier-Smith, 1993 [monotypic] see Superclass Dinoflagellata Bütschli, 1885
         Class Syndinea Chatton, 1920 [monotypic]
           Order Syndiniales A.R. Loebl. (1976)
             1 Family Syndiniaceae Chatton (1920)
             2 Family Coccidiniaceae Chatton & Biecheler (1934) [monotypic]
             3 Family Sphaeriparaceae A.R. Loebl. (1970)
             4 Family Amoebophryidae Loeblich, 1970 see Family Amoebophryaceae Cachon ex A.R. Loebl. (1970)