Phylum Parabasalia Honigberg, 1973 see Infraphylum Parabasalia Honigberg, 1973
   1['5'] Class Trichonymphea Hartmann, 1911
   2.1.1['1'] Class Hypotrichomonadea Cepicka, Hampl & Kulda, 2010 see Suborder Hypotrichomonadina Čepička et al., 2010
   2.1.2['2'] Class Trichomonadea Kirby, 1947
   2.2.1['3'] Class Tritrichomonadea Cepicka, Hampl & Kulda, 2010 see Order Tritrichomonadida Cepicka, Hampl & Kulda, 2010
   2.2.2.1['4'] Class Cristamonadea Brugerolle & Patterson, 2001 - cristamonads
   2.2.2.2['6'] Class Spirotrichonymphea Grassé, 1952 see Order Spirotrichonymphida Grassé, 1952
   3 Genus Trichocovina Maaß & Radek, 2006, incertae sedis
   4 Genus Chilomitus de Fonseca, 1915, incertae sedis