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 Hormosinana Mikhalevich, 1992
                                         Order Ammomarginulinida Mikhalevich, 2002
                                           Superfamily Ammomarginulinoideaᵀ Podobina, 1978
                                             Family Ammomarginulinidaeᵀ Podobina, 1978
                                               ?Subfamily †Haymanellinae Mikhalevich, 2003 [monotypic]
                                                 Genus †Haymanellaᵀ Sirel, 1999 [monotypic]
                                                   †Haymanella paleocenicaᵀ Sirel, 1999