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
               "protists" incertae sedis
                 Group †Acritarcha Evitt, 1963, incertae sedis [polyphyletic] - acritarchs
                   Family †Acanthomorphitidae
                   Genus †Buedingiisphaeridium Schaarschmidt, 1963 emend. Lister, 1970 emend. Sarjeant & Stancliffe, 1994
                   Genus †Carminella Cramer, 1968
                   Genus †Comasphaeridium Staplin, Jansonius & Pocock, 1965
                   Genus †Dateriocradus Tappan & Loeblich, 1972
                   Genus †Diexallophasis Loeblich, 1970
                   Genus †Dilatisphaera Lister, 1970
                   Genus †Dorsennidium Wicander, 1974
                   Genus †Eisenackidium Cramer & Díez, 1968 ex Eisenack, Cramer & Díez, 1973
                   Genus †Estiastra Eisenack, 1959
                   Genus †Eupoikilofusa Cramer, 1970
                   Genus †Gorgonisphaeridium Staplin, Jansonius & Pocock, 1965
                   Genus †Hapsidopalla Playford, 1977
                   Genus †Helosphaeridium Lister, 1970
                   †Herkomorphitae
                   Genus †Hoegklintia Dorning, 1981
                   Genus †Leiofusa Eisenack, 1938
                   Genus †Leoniella
                   Genus †Leptobrachion Dorning, 1981
                   Genus †Lophosphaeridium Timofeev, 1959
                   Genus †Micrhystridium Deflandre, 1937
                   Genus †Multiplicisphaeridium Staplin, 1961
                   Genus †Neoveryhachium Cramer, 1970
                   Genus †Onondagella Cramer, 1966
                   Genus †Oppilatala Loeblich & Wicander, 1976
                   Genus †Ozotobrachion Loeblich & Drugg, 1968
                   Genus †Percultisphaera Lister, 1970
                   Subgroup †Polygonomorphitae Downie et al., 1963
                   Genus †Psenotopus Tappan & Loeblich Jr., 1971
                   Genus †Pseudofromea Burger (1980)
                   †Pteromorphitae
                   Genus †Pulvinosphaeridium Eisenack, 1954
                   Genus †Salopidium Dorning, 1981
                   Genus †Schismatosphaeridium Staplin, Jansonius & Pocock, 1965
                   Genus †Tunisphaeridium J. Deunff & W.R. Evitt, 1968
                   Genus †Tylotopalla Loeblich, 1970
                   Genus †Veryhachium J. Deunff, 1954
                   Genus †Visbysphaera Lister, 1970
                   1 Genus †Ammonidium Lister, 1970
                   1 Genus †Baltisphaeridium Eisenack, 1958 ex Eisenack, 1959
                   2 Genus †Peteinosphaeridium Staplin et al.
                   3 Genus †Cymbosphaeridium Lister, 1970