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 Xenophyophorea Schulze, 1904
                                         Order Psamminida Tendal, 1972
                                           Family Psamminidaeᵀ Haeckel, 1889
                                             1 Genus Psamminaᵀ Haeckel, 1889
                                             2 Genus Cerelpemma Laubenfels, 1936
                                             3 Genus Galatheammina Tendal, 1972
                                             4 Genus Reticulammina Tendal, 1972
                                             5 Genus Semipsammina Tendal, 1975
                                             6 Genus Shinkaiya Lecroq, Gooday, Tsuchiya & Pawlowski, 2009
                                             7 Genus Spiculammina Kamenskaya, 2005