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
               [plesion] Phylum Euglenozoa Cavalier-Smith, 1981
                 Subphylum Plicostoma Patterson, 1988 ex T. Cavalier-Smith, 1998
                   Class Diplonemea Cavalier-Smith, 1993 [monotypic]
                     Order Diplonemidaᵀ Cavalier-Smith, 1993 [monotypic]
                       Family Diplonemidaeᵀ Cavalier-Smith, 1993
                         1 Genus Diplonemaᵀ Griessmann, 1913
                         2 Genus Rhynchopus Skuja, 1948