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 Rhizaria Cavalier-Smith, 2002
                                 Phylum Retaria Cavalier-Smith, 2002
                                   Subphylum Foraminifera d'Orbigny, 1826
                                     "monothalamids" [paraphyletic]
                                       Class Astrorhizata Saidova, 1981
                                         Subclass Astrorhizanaᵀ Saidova, 1981
                                           Order Psammosphaerida Haeckel, 1894
                                             Suborder Stegnamminina Mikhalevich, Pronina & Nestell, 2000
                                               Superfamily Stegnamminoideaᵀ Moreman, 1930
                                                 Family Stegnamminidaeᵀ Moreman, 1930
                                                   Subfamily Stegnammininaeᵀ Moreman, 1930
                                                     01 Genus †Anictosphaera McClellan, 1973
                                                     02 Genus †Bykovaeina Suleymanov, 1969
                                                     03 Genus †Ceratammina Ireland, 1939
                                                     04 Genus †Gastroammina Dunn, 1942
                                                     05 Genus †Luekatiella Mens & Zhigulina, 1999
                                                     06 Genus †Pseudastrorhiza Eisenack, 1932
                                                     07 Genus †Raibosammina Moreman, 1930
                                                     08 Genus †Stegnamminaᵀ Moreman, 1930
                                                     09 Genus †Thekammina Dunn, 1942
                                                     10 Genus †Thuramminoides Plummer, 1945
                                                     11 Genus Spiculosiphon Christiansen, 1964
                                                     12 Genus Storthosphaera Schulze, 1875