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
Clade Nephrozoa Jondelius, Ruiz-Trillo, Baguñà & Riutort 2002
Infrakingdom Deuterostomia Grobben, 1908
[crown] Clade Ambulacraria Metschnikoff 1881 [Halanych 1995]
Phylum Echinodermata Bruguière, 1789 - echinoderms
Subphylum Eleutherozoa Bell, 1891
Infraphylum Echinozoa Haeckel, in Von Zittell, 1895
Class Echinoidea (Leske, 1778) - sea urchins and sand dollars
Subclass Euechinoidea Bronn, 1860
Superorder Atelostomata von Zittel, 1879 - irregular urchins
Order Spatangoida L. Agassiz, 1840
Suborder Amphisternataᵀ
01 Family Toxasteridae Lambert, 1920
02 Family Hemiasteridae H.L. Clark, 1917
03 Family Palaeostomatidae Lovén, 1868 [monotypic]
04 Family Pericosmidae Lambert, 1905
05 Family Schizasteridae Lambert, 1905
06 Family Aeropsidae Lambert, 1896
07 Family Brissidae Gray, 1855
08 Family Spatangidae Gray, 1825
09 Family Loveniidae Lambert, 1905
10 Family Asterostomatidae Pictet, 1857