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
             Family Spirotrichosomidae Hollande & Carruette-Valentin, 1971
               Genus Leptospironympha Cleveland, Hall, Sanders & Collier, 1934