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
                                     Globothalamea Pawlowski, Holzmann & Tyszka, 2013
                                       Class Rotaliata Mikhalevich, 1980 - hyaline foraminifers
                                         Subclass Rotalianaᵀ Mikhalevich, 1980
                                           Superorder Nonionoida Saidova, 1981
                                             Order †Orbitoidida Copeland, 1956
                                               Family †Lepidocyclinidae Scheffen, 1932
                                                 Subfamily †Helicolepidininae Tan, 1936
                                                   1 Genus †Helicolepidinaᵀ Tobler, 1922
                                                   2 Genus †Eulinderina Barker & Grimsdale, 1936
                                                   3 Genus †Helicostegina Barker & Grimsdale, 1936
                                                   4 Genus †Helicosteginopsis Caudri, 1975
                                                   5 Genus †Nephrolepidina Douvillé, 1911
                                                   6 Genus †Polylepidina Vaughan, 1925