Natura - nature
actualia - actual entities
Mundus Plinius - physical world
naturalia - natural bodies
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
Clade photaria Cavalier-Smith, 2021
Clade eucorta Cavalier-Smith, 2021
Superkingdom Corticata Lankester, 1878 - corticates
Kingdom Chromista Caval.-Sm. (1981) - chromists
Subkingdom Harosa Cavalier-Smith, 2010
Clade Sar Adl et al. 2012 [Simpson & Dunthorn 2020]
Infrakingdom Halvaria Cavalier-Smith, 2010
Superphylum Alveolata Cavalier-Smith, 1991
Phylum Ciliophora Doflein, 1901 - ciliates
Subphylum Intramacronucleata Lynn, 1996 - amphiesmates
Class Litostomatea Small & Lynn, 1981
Subclass Haptoria Corliss, 1974
Order Haptoridaᵀ Corliss, 1974
Family Spathidiidae Kahl, 1929
01 ?Genus Proboscidium Meunier, 1910, nom. dub.
02 Genus Arcuospathidium Foissner, 1984
03 Genus Bryophyllum Kahl, 1931
04 Genus Cranotheridium Schewiakoff, 1892
05 Genus Cultellothrix W. Foissner, 2003 [monotypic]
06 Genus Epispathidium Foissner, 1984
07 Genus Lacerus Jankowski, 1967
08 Genus Micromidas Delphy, 1938
09 Genus Myriokaryon Jankowski, 1973
10 Genus Penardiella Kahl, 1930
11 Genus Perispira Stein, 1859
12 Genus Protospathidium Dragesco & Dragesco-Kernéis, 1979
13 Genus Spathidiodes Kahl, 1926
14 Genus Spathidioides Brodsky, 1925
15 Genus Spathidiosus Gajewskaja, 1933
16 Genus Spathidiumᵀ Dujardin, 1841
17 Genus Supraspathidium Foissner & Didier, 1981
18 Genus Thysanomorpha Jankowski, 1967
19 Genus Diceratula Corliss, 1960, nom. dub.