Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Clade neomura Cavalier-Smith, 1987
             Domain Eukaryota Chatton, 1925 - eukaryotes
               Clade discaria Cavalier-Smith, 2021
                 Clade natates Cavalier-Smith, 2021
                   Clade photaria Cavalier-Smith, 2021
                     Clade eucorta Cavalier-Smith, 2021
                       Superkingdom Corticata Lankester, 1878 - corticates
                         Kingdom Chromista Caval.-Sm. (1981) - chromists
                           Subkingdom Harosa Cavalier-Smith, 2010
                             [crown] Clade Sar Adl et al. 2012 [Simpson & Dunthorn 2020]
                               Infrakingdom Halvaria Cavalier-Smith, 2010
                                 Superphylum Alveolata Cavalier-Smith, 1991
                                   Phylum Miozoa Cavalier-Smith, 1987
                                     Subphylum Myzozoa Cavalier-Smith & Chao, 2004
                                       Infraphylum Dinozoa Cavalier-Smith, 1981
                                         Superclass Dinoflagellata Bütschli, 1885
                                           Class Syndinea Chatton, 1920
                                             Order Syndinialesᵀ A.R. Loebl. (1976)
                                               -1.0 [Family "Dubosquellaceae" Chatton (1920)] see Family Duboscquellaceae Chatton ex A.R. Loebl. (1970)
                                               1 Family Coccidiniaceae Chatton & Biecheler (1934) [monotypic]
                                               1.0 [Family Coccidinidae Chatton & Biecheler, 1934] see Family Coccidiniaceae Chatton & Biecheler (1934)
                                               2 Family Syndiniaceaeᵀ Chatton (1920)
                                               2.4.0 [Genus Atelodinium Chatton (1920), incertae sedis] see Genus Syndinium Chatton (1910)
                                               3 Family Amoebophryaceae Cachon ex A.R. Loebl. (1970)
                                               3.0 [Family Amoebophryidae Loeblich, 1970] see Family Amoebophryaceae Cachon ex A.R. Loebl. (1970)
                                               4 Family Sphaeriparaceae A.R. Loebl. (1970)
                                               x [Family Spiromonadaceae Hollande, in Grassé (1952) [monotypic]]
                                               x.0 [Family "Spiromondaceae" nom. null.] see Family Spiromonadaceae Hollande, in Grassé (1952)