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
                                     Class Nodosariata Mikhalevich, 1992, incertae sedis
                                       Subclass Nodosarianaᵀ Mikhalevich, 1992
                                         Order Polymorphinida Mikhalevich, 1980
                                           Suborder Polymorphininaᵀ Mikhalevich, 1980
                                             Family Plectofrondiculariidae Cushman, 1927
                                               01 Genus †Berthelinella Loeblich & Tappan, 1957
                                               02 Genus †Dyofrondicularia Asano, 1936
                                               03 Genus †Lankesterina Loeblich & Tappan, 1961
                                               04 Genus †Parafrondicularia Asano, 1938
                                               05 Genus †Plectofrondiculariaᵀ Liebus, 1902
                                               06 Genus †Plectolingulina Hayward, 2012
                                               07 Genus †Sieberina Fuchs, 1970, nom. illeg.
                                               08 Genus †Staffia Schubert, 1912
                                               09 Genus †Yneziella Akpati, 1966
                                               10 Genus Behillia Haman, 1979
                                               11 Genus Mucronina Ehrenberg, 1839