Natura - nature
actualia - actual entities
Mundus Plinius - physical world
naturalia - natural bodies
[crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Clade neomura Cavalier-Smith, 1987
Domain Eukaryota Chatton, 1925 - eukaryotes
Clade discaria Cavalier-Smith, 2021
Clade natates Cavalier-Smith, 2021
Phylum Metamonada Grassé, 1952 [coordinate rank]
Subphylum Trichozoa Cavalier-Smith, 1997
Infraphylum Parabasalia Honigberg, 1973
Class Trichomonadea Kirby, 1947
Order Tritrichomonadida Cepicka, Hampl & Kulda, 2010 - tritrichomonadids
Family Dientamoebidae Grassé, 1953
Subfamily Protrichomonadinae Honigberg & Kuldová, 1969
Genus Protrichomonasᵀ Alexeieff, 1911