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 dorsates Cavalier-Smith, 2021
Clade podiates Cavalier-Smith, 2012
[crown] Clade Amorphea Adl et al. 2012 [Simpson, Medina & Adl 2020]
[crown] Clade Obazoa Brown, Sharpe, Silberman, Heiss, Lang, Simpson & Roger 2013
[crown] Clade Opisthokonta Cavalier-Smith 1987 [Simpson & Medina 2020] - animal-fungal clade
Superkingdom Holozoa Lang, O'Kelly, Nerad, Gray & Burger, 2002
Clade filozoa Shalchian-Tabrizi, Minge, Espelund, Orr, Ruden, Jakobsen & Cavalier-Smith, 2008
Kingdom Animalia Linnaeus, 1758 - animals
Clade Planulozoa Wallberg, Thollesson, Farris & Jondelius 2004
Subkingdom Bilateria Hatschek, 1888 - bilaterians
Phylum Xenacoelomorpha Philippe, Brinkmann, Copley, Moroz, Nakano, Poustka, Wallberg, Peterson & Telford, 2011 [coordinate rank]
Subphylum Acoelomorpha Ehlers, 1985
Class Acoela Uljanin, 1870 [monotypic]
Order Acoelidaᵀ
Family Dakuidae Hooge, 2003
Family Isodiametridae Hooge & Tyler, 2005
Family Polycanthiidae Hooge, 2003
01 Family Anaperidae Dörjes, 1968
02 Family Antroposthiidae Faubel, 1976
03 Family Antigonariidae Dörjes, 1968 [monotypic]
04.1 Family Childiidae Dörjes, 1968
04.2 Family Actinoposthiidae Hooge, 2001
05 Family Convolutidae Graff, 1905
06 Family Sagittiferidae Kostenko & Mamkaev, 1990
07 Family Diopisthoporidae Westblad, 1940 [monotypic]
08 Family Hallangiidae Westblad, 1946
09 Family Haploposthiidae Westblad, 1948
10 Family Hofsteniidae Bock, 1923
11 Family Mecynostomidae Dörjes, 1968
12 Family Nadinidae Dörjes, 1968 [monotypic]
13 Family Otocelididae Westblad, 1948
14 Family Paratomellidae Dörjes, 1966
15 Family Proporidae Graff, 1882 [monotypic]
16 Family Solenofilomorphidae Dörjes, 1968
17 Family Taurididae Kostenko, 1989