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 Halvaria Cavalier-Smith, 2010
                                 Superphylum Heterokonta Caval.-Sm. (1986)
                                   Phylum Ochrophyta Caval.-Sm. (1995)
                                     Subphylum Khakista Caval.-Sm. (2000)
                                       Diatomea Kütz. (1844)
                                         Class Bacillariophyceae Haeckel (1878) - pennates
                                           Subclass Urneidophycidae Medlin (2016) - basal araphid diatoms
                                             Order Rhaphoneidales Round (1990)
                                               Family Rhaphoneidaceaeᵀ Forti (1912)
                                                 1 Genus Delphineis G.W. Andrews (1977)
                                                 2 Genus Diplomenora K.L. Blazé (1984)
                                                 3 Genus Neodelphineis
                                                 4 Genus Perissonoë G.W. Andrews & Stoelzel (1984)
                                                 5 Genus Rhaphoneisᵀ Ehrenb. (1844)
                                                 6 Genus Sceptroneis Ehrenb. (1844)