Phylum Parabasalia Honigberg, 1973 see Infraphylum Parabasalia Honigberg, 1973 Class Trichonymphea Hartmann, 1911 Order Trichonymphida Hartmann, 1911 Family Spirotrichosomidae Hollande & Carruette-Valentin, 1971 Genus Bispironympha Bobyleva, 1969