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 Hypermastigia see Superclass Parabasalia Honigberg, 1973
           Order Trichonymphida Hartmann, 1911
             1 Family Hoplonymphidae Light, 1926
             2 Family Staurojoeninidae Grassi, 1917
             3 Family Trichonymphidaeᵀ Kent, 1880
             4 Family Eucomonymphidae Cleveland, Hall, Sanders & Collier, 1934 see Family Teranymphidae Koidzumi, 1921
             5 Family Teranymphidae Koidzumi, 1921
             6 Family Spirotrichosomidae Hollande & Carruette-Valentin, 1971