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
               [Bikonta]
                 ?[Supergroup Excavata Cavalier-Smith, 2002] see [unranked] Excavata Cavalier-Smith, 2002
                   [Parabasalia Honigberg, 1973] see Infraphylum Parabasalia Honigberg, 1973
                     1 Trichomonadida Kirby, 1947
                     2 Cristamonadida Brugerolle & Patterson, 2001
                     3 Spirotrichonymphida Light, 1927
                     4 Trichonymphida Poche, 1913