Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         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
                             Clade Sar Adl et al. 2012 [Simpson & Dunthorn 2020]
                               Infrakingdom Rhizaria Cavalier-Smith, 2002
                                 Phylum Retaria Cavalier-Smith, 2002
                                   Subphylum Foraminifera d'Orbigny, 1826
                                     Tubothalamea Pawlowski, Holzmann & Tyszka, 2013
                                       Class Spirillinata Mikhalevich, 1992
                                         Subclass Spirillinanaᵀ Mikhalevich, 1992
                                           Superorder Spirillinoidaᵀ Hohenegger & Piller, 1975
                                             Order Patellinida Mikhalevich, 1992
                                               Superfamily Hergottelloidea Loeblich & Tappan, 1984
                                                 Family Placentulinidae Kasimova, Poroshina & Geodakchan, 1980
                                                   1 Genus Eupatellinella Hatta, 1992, incertae sedis
                                                   2 Subfamily Placentulininaeᵀ Kasimova, Poroshina & Geodakchan, 1980
                                                   3 Subfamily Ashbrookiinae Loeblich & Tappan, 1984 [monotypic]