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 Radiozoa Cavalier-Smith, 1987
                                     Superclass Polycystinia Ehrenberg, 1838
                                       Class Nassellaria Ehrenberg, 1847
                                         Order Cyrtidinata Haeckel, 1862
                                           Superfamily Eucyrtidioidea Ehrenberg, 1847
                                             Family Artostrobiidae Riedel, 1967
                                               Genus Phormostichoartus Campbell, 1951
                                                 01 †Phormostichoartus caryoforma (Caulet, 1979)
                                                 02 Phormostichoartus corbula (Harting, 1863)
                                                 03 †Phormostichoartus crustula (Caulet, 1979)
                                                 04 †Phormostichoartus doliolum Riedel & Sanfilippo, 1971
                                                 05 †Phormostichoartus fistula Nigrini, 1977
                                                 06 Phormostichoartus furcaspiculata (Popofsky, 1913)
                                                 07 †Phormostichoartus marylandicus (Martin, 1904)
                                                 08 †Phormostichoartus multiseriatus (Ehrenberg, 1860)
                                                 09 †Phormostichoartus pitomorphus Caulet, 1986
                                                 10 Phormostichoartus platycephala (Ehrenberg, 1872)
                                                 11 †Phormostichoartus schneideri Nigrini & Caulet, 1992
                                                 12 †Phormostichoartus strongi Hollis, 1997