Parabasalia Honigberg, 1973 - parabasalids
1 Class Hypotrichomonadea Čepička et al., 2010
see Suborder Hypotrichomonadina Čepička et al., 2010
2 Class Trichomonadea Kirby, 1947
3 Class Tritrichomonadea Cepicka et al., 2010
see Order Tritrichomonadida Čepička et al., 2010
4 Genus Trichocovina Maaß & Radek, 2006
5 Class Cristamonadea (Brugerolle & Patterson, 2001) I. Cepicka et al., 2010 - cristamonads
6 Class Trichonymphea Cavalier-Smith, 2003
7 Class Spirotrichonymphea Grassé, 1952
see Order Spirotrichonymphida Grassé, 1952
8 Genus Chilomitus de Fonseca, 1915