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 Nodosariidaᵀ Calkins, 1926
                                           Suborder Nodosariinaᵀ Calkins, 1926
                                             Superfamily †Stilostomelloidea Finlay, 1947 [monotypic]
                                               Family †Stilostomellidaeᵀ Finlay, 1947
                                                 1 Genus †Stilostomellaᵀ Guppy, 1895
                                                 2 Genus †Siphonodosaria Silvestri, 1924
                                                 3 Genus †Strictocostella Patterson, 1987
                                                 4 Genus †Carchariostomoides Hayward & Kawagata, 2012
                                                 5 Genus †Caveastomella Hayward & Kawagata, 2012
                                                 6 Genus †Toddostomella Hayward, 2012
                                                 7 Genus †Unidens Hayward & Kawagata, 2012, nom. illeg.