eukaryotes see Domain Eukaryota Chatton, 1925
   Kingdom Protozoa Goldfuss, 1818 [paraphyletic] - protozoa
     Subkingdom Eozoa Cavalier-Smith, 1997 [paraphyletic] see Infrakingdom Eozoa Cavalier-Smith, 1997
       Infrakingdom Excavata T. Cavalier-Smith, 2002 [paraphyletic] see Supergroup Excavata Cavalier-Smith, 2002
         Phylum Loukozoa Cavalier-Smith, 1999 [paraphyletic]
           Subphylum Metamonada Grassé, 1952 see Phylum Metamonada Grassé, 1952
             Infraphylum Anaeromonada Cavalier-Smith, 1997 see Subphylum Anaeromonada Cavalier-Smith, 1997
               Class Anaeromonadea Cavalier-Smith, 1997
                 Order Trimastigida Cavalier-Smith, 2003 [monotypic]
                   1 Family Trimastigidae Saville Kent, 1880 [monotypic]