Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         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 Discoba Simpson 2009
                       Superphylum Discicristata Cavalier-Smith, 1998 [coordinate rank]
                         Phylum Euglenozoa Cavalier-Smith, 1981
                           [Class Euglenophyceae W. Schoenichen (1925)] see Class Euglenoidea Bütschli, 1884
                             Family Euglenaceae Dujard. (1841), nom. cons.
                             Family Petalomonadaceae Bütschli (1884)
                             1 [Order Eutreptiales Leedale (1967)] see Suborder Eutreptiina Leedale, 1967
                             2 [Order Euglenalesᵀ Bütschli (1884)] see Suborder Euglenina Bütschli, 1884
                             3 [Order Rhabdomonadales Leedale (1967)] see Suborder Rhabdomonadina Leedale, 1967
                             4 [Order Sphenomonadales Leedale, 1967] see Suborder Sphenomonadina Leedale, 1967
                             5 [Order Heteronematales Leedale, 1967] see Suborder Heteronematina Leedale, 1967
                             6 [Order Euglenamorphales Leedale (1967)] see Suborder Euglenamorphina Leedale, 1967