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 Hypotrichomonadinae Honigberg, 1963 see Family Hypotrichomonadidae Honigberg, 1963
                 1 Genus Hypotrichomonas Lee, 1960
                 2 Genus Pseudotrichomonas Bishop, 1939
                 3 Genus Ditrichomonas Farmer, 1993