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
         1 Genus Tritrichomonasᵀ Kofoid, 1920