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 Trichomonadidae Chalmers & Pekkola, 1918
               Subfamily Trichomonadinaeᵀ Chalmers & Pekkola, 1918
                 1 Genus Trichomitus Swezy, 1915
                 2 Genus Tetratrichomonas Parisi, 1910
                 3 Genus Trichomonas Donné, 1836
                 4 Genus Pentatrichomonas Mesnil, 1914