Phylum Parabasalia Honigberg, 1973 see Infraphylum Parabasalia Honigberg, 1973
Count: [*] 6c;7o;16f;90g;15s [10 Dec 2023]
   1['5'] Class Trichonymphea Hartmann, 1911
  Count: [*] 1o;5f;16g
   2.1.1['1'] Class Hypotrichomonadea Cepicka, Hampl & Kulda, 2010 see Suborder Hypotrichomonadina Čepička et al., 2010
  Count: [*] 1o;1f;2g
   2.1.2['2'] Class Trichomonadea Kirby, 1947
  Count: [*] 2o;4f;15g;5s
   2.2.1['3'] Class Tritrichomonadea Cepicka, Hampl & Kulda, 2010 see Order Tritrichomonadida Cepicka, Hampl & Kulda, 2010
  Count: [*] 1o;4f;7g;10s
   2.2.2.1['4'] Class Cristamonadea Brugerolle & Patterson, 2001 - cristamonads
  Count: [*] 1o;1f;38g
   2.2.2.2['6'] Class Spirotrichonymphea Grassé, 1952 see Order Spirotrichonymphida Grassé, 1952
  Count: [*] 1o;1f;10g
   3 Genus Trichocovina Maaß & Radek, 2006, incertae sedis
  Count: -
   4 Genus Chilomitus de Fonseca, 1915, incertae sedis
  Count: -