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 Trichonymphea Hartmann, 1911
Order Trichonymphidaᵀ Hartmann, 1911
Family Spirotrichosomidae Hollande & Carruette-Valentin, 1971
Genus Leptospironympha Cleveland, Hall, Sanders & Collier, 1934