organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Status: extant; Count: -
   Domain eukaryotes see Domain Eukaryota Chatton, 1925
  Status: extant; Count: 1k;12p;37c;157o;717f;2996g;586s; †2o;1g
     flagellated protists
    Status: extant; Count: 2p;5c;16o;45f;366g; †1g
       Phylum Parabasalia Honigberg, 1973 see Infraphylum Parabasalia Honigberg, 1973
      Status: extant; Count: [g] 2c;4o;20f;81g
         Class Trichomonada see Class Trichomonadea Kirby, 1947
        Status: extant; Count: -
           Order Trichomonadida Kirby, 1947 - trichomonads
          Status: extant; Count: -
             Family Monocercomonadidae Kirby, 1944
            Status: extant; Count: [g] 12g
               Subfamily Monocercomonadinae Kirby, 1944 see Family Monocercomonadidae Kirby, 1944
              Status: extant; Count: [g] 4g
                 1 Genus Monocercomonas Grassi, 1879
                Status: extant; Count: -
                 2 Genus Eutrichomastix Kofoid & Swezy, 1915 see Genus Monocercomonas Grassi, 1879
                Status: extant; Count: -
                 3 Genus Tricercomitus Kirby, 1930
                Status: extant; Count: -
                 4 Genus Tetratrichomastix Mackinnon, 1913 see Genus Hexamastix Alexeieff, 1912
                Status: extant; Count: -
                 5 Genus Trichomastix Blochmann, 1884 see Genus Tetratrichomastix Mackinnon, 1913
                Status: extant; Count: -
                 6 Genus Hexamastix Alexeieff, 1912
                Status: extant; Count: -