living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Protozoa Goldfuss, 1818 see Kingdom Protozoa Goldfuss, 1818
         Phylum Sarcomastigophora Honigberg & Balamuth, 1963
           Subphylum Mastigophora Diesing, 1866 - flagellates
             Class Zoomastigophora see Class Zoomastigophorea
               Order Trichomonadida Kirby, 1947 - trichomonads
                 Family Trichomonadidae Chalmers & Pekkola, 1918
                   Subfamily Trichomonadinae Chalmers & Pekkola, 1918
                     1 Genus Trichomitus Swezy, 1915
                     2 Genus Tetratrichomonas Parisi, 1910
                     3 Genus Trichomonas Donné, 1836
                     4 Genus Pentatrichomonas Mesnil, 1914