Phylum Parabasalia Honigberg, 1973
see Infraphylum Parabasalia Honigberg, 1973
Class Tritrichomonadea Cepicka, Hampl & Kulda, 2010
see Order Tritrichomonadida Cepicka, Hampl & Kulda, 2010
Order Tritrichomonadida Cepicka, Hampl & Kulda, 2010 - tritrichomonadids
Family Tritrichomonadidae Honigberg, 1963
Genus Tritrichomonasᵀ Kofoid, 1920