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
       Order Diplomonadida Wenyon, 1926 - diplomonads
         Suborder Diplomonadina see Order Diplomonadida Wenyon, 1926
           Family Hexamitidae Kent, 1881
             Subfamily Hexamitinaeᵀ Kent, 1880 see Family Hexamitidae Kent, 1881
               1 Genus Trepomonas Dujardin, 1841
               2 Genus Trigonomonas Klebs, 1892
               3 Genus Gyromonas Seligo, 1886
               4 Genus Hexamita Dujardin, 1838
               5 Genus Spironucleus Lavier, 1936