Phylum Parabasalia Honigberg, 1973 see Infraphylum Parabasalia Honigberg, 1973 Class Hypotrichomonadea Cepicka, Hampl & Kulda, 2010 see Suborder Hypotrichomonadina Čepička et al., 2010 Order Hypotrichomonadida Cepicka, Hampl & Kulda, 2010 see Suborder Hypotrichomonadina Čepička et al., 2010 1 Family Hypotrichomonadidae Honigberg, 1963