organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain eukaryotes see Domain Eukaryota Chatton, 1925
     flagellated protists
       Phylum Parabasalia Honigberg, 1973 see Infraphylum Parabasalia Honigberg, 1973
         Class Trichomonada see Class Trichomonadea Kirby, 1947
           Order Trichomonadida Kirby, 1947 - trichomonads
             Family Monocercomonadidae Kirby, 1944
               Subfamily Monocercomonadinae Kirby, 1944 see Family Monocercomonadidae Kirby, 1944
                 1 Genus Monocercomonas Grassi, 1879
                 2 Genus Eutrichomastix Kofoid & Swezy, 1915 see Genus Monocercomonas Grassi, 1879
                 3 Genus Tricercomitus Kirby, 1930
                 4 Genus Tetratrichomastix Mackinnon, 1913 see Genus Hexamastix Alexeieff, 1912
                 5 Genus Trichomastix Blochmann, 1884 see Genus Tetratrichomastix Mackinnon, 1913
                 6 Genus Hexamastix Alexeieff, 1912