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
                   Phylum Metamonada Grassé, 1952 [coordinate rank]
                     Subphylum Trichozoa Cavalier-Smith, 1997
                       Infraphylum Fornicata Simpson, 2003
                         Class Carpomonadea Cavalier-Smith, 2012 [paraphyletic]
                           Order Chilomastigida Cavalier-Smith, 2012 [monotypic]
                             Family Chilomastigidaeᵀ Cavalier-Smith, 2012 [monotypic]
                               Genus Chilomastixᵀ Alexeieff, 1910
                                 Chilomastix bettencourti