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
               [Bikonta]
                 ?[Supergroup Excavata Cavalier-Smith, 2002] see [unranked] Excavata Cavalier-Smith, 2002
                   [Phylum Parabasalia Honigberg, 1973] see Infraphylum Parabasalia Honigberg, 1973
                     4.1.1 [Class Hypotrichomonadea Cepicka, Hampl & Kulda, 2010 [monotypic]] see Suborder Hypotrichomonadina Čepička et al., 2010
                     4.1.2.0 [Class Trichomonada] see Class Trichomonadea Kirby, 1947
                     4.2.1 [Class Tritrichomonadea Cepicka, Hampl & Kulda, 2010 [monotypic]] see Order Tritrichomonadida Cepicka, Hampl & Kulda, 2010
                     4.2.2.1 [Class Cristamonadea Brugerolle & Patterson, 2001 [monotypic] - cristamonads]
                     4.2.2.2 [Class Spirotrichonymphea Grassé, 1952 [monotypic]] see Order Spirotrichonymphida Grassé, 1952
                     n.0 [Class Hypermastigia] see Superclass Parabasalia Honigberg, 1973
                     n.0 [Class Hypermastiginea] see Class Hypermastigia