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 Trichozoa Cavalier-Smith, 1997 see Subphylum Trichozoa Cavalier-Smith, 1997
               Superclass Parabasalia Honigberg, 1973 - parabasalids see Infraphylum Parabasalia Honigberg, 1973
                 Class Trichomonadea Kirby, 1947
                   Subclass Cristomonadia Cavalier-Smith, 2012
                     Order Cristamonadida Brugerolle & Patterson, 2001
                       Family Devescovinidae Doflein, 1911
                         1 Genus Caduceia França, 1918
                         2 Genus Coronympha Kirby, 1929
                         3 Genus Devescovina Foà, 1905
                         4 Genus Joenia Grassi, 1885