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
                   Phylum Metamonada Grassé, 1952 [coordinate rank]
                     Subphylum Trichozoa Cavalier-Smith, 1997
                       Infraphylum Parabasalia Honigberg, 1973
                         Class Trichomonadea Kirby, 1947
                           Order Tritrichomonadida Cepicka, Hampl & Kulda, 2010 - tritrichomonadids
                             Family Simplicimonadidae Cepicka, Hampl & Kulda, 2010 [monotypic]
                               Genus Simplicimonasᵀ Cepicka, Hampl & Kulda, 2010
                                 1 Simplicimonas axostylis (Kirby, 1931)
                                 2 Simplicimonas caviae (Nie, 1950)
                                 3 Simplicimonas cuniculi (Tanabe, 1926)
                                 4 Simplicimonas lori (Abraham, 1962)
                                 5 Simplicimonas molae (Noble & Noble, 1966)
                                 6 Simplicimonas moskowitziᵀ (Honigberg, 1963)
                                 7 Simplicimonas pistillum (Nie, 1950)
                                 8 Simplicimonas similis Cepicka, Hampl & Kulda, 2010