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 Plantae Haeckel (1866) - plants
                           Subkingdom Viridiplantae Caval.-Sm. (1981) - green plants
                             Phylum Chlorophyta Pascher (1914) [coordinate rank] - green algae
                               "prasinophytes"
                                 Order Pyramimonadales Chadefaud
                                   Family Halosphaeraceaeᵀ Haeckel (1894)
                                     Genus Pterosperma Pouchet (1893)
                                       Pterosperma cristatum J. Schiller (1925)
                                       Pterosperma eurypteron M. Parke, in M. Parke, G.T. Boalch, R. Jowett & D.S. Harbour (1978)
                                       Pterosperma marginatum Gaarder (1954)
                                       Pterosperma moebii (E.H. Jørg., 1899) C.E.H. Ostenfeld, in C.E.H. Ostenfeld & J. Schmidt (1901)
                                       Pterosperma nationalis Lohmann (1904)
                                       Pterosperma parallelum K.R. Gaarder (1938)
                                       Pterosperma polygonum Ostenfeld, in Ostenfeld & J. Schmidt (1901)
                                       Pterosperma rotundatum
                                       Pterosperma undulatum Ostenfeld, in Ostenfeld & J. Schmidt (1901)
                                       Pterosperma vanhoeffenii (E.H. Jørg., 1899) C.E.H. Ostenfeld, in C.E.H. Ostenfeld & J. Schmidt (1901)