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 neokaryotes Cavalier-Smith 1993 - mitochondrial eukaryotes
Clade neozoa Cavalier-Smith 1993
Clade scotokaryotes Cavalier-Smith 2000
Clade podiates Cavalier-Smith 2012
[crown] Clade Amorphea Adl et al. 2012
[crown] Clade Opisthokonta Cavalier-Smith 1987
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
Phylum Chordata Bateson, 1885 - chordates
Subphylum Vertebrata Cuvier, 1812 - vertebrates
Myopterygii - myopterygians
Superclass †Osteostracomorphi [monotypic]
Class †Cephalaspidomorphi Moy-Thomas & Mile, 1971
Order †Cephalaspidiformesᵀ
Genus †Aachenaspis
Genus †Boreaspis Stensiö, 1927
Genus †Didymaspis Lankester, 1867
Genus †Fieldingaspis
Genus †Ilemoraspis Obruchev, 1961
Genus †Oeselaspis Robertson, 1935
Genus †Procephalaspis Denison, 1951
Genus †Saaremaaspis
Genus †Superciliaspis Adra & Wi, 1994
Genus †Tannuaspis Obruchev, 1956
Genus †Timanaspis Obruchev, 1962
Genus †Tuvaspis Obruchev, 1956
Genus †Tyriaspis Heintz, 1967
Genus †Waengsjoeaspis Janvier, 1985
1 Family †Ateleaspidae Traquair, 1899 [monotypic]
2 Genus †Hirella Cossmann, 1920
3 Genus †Hemicyclaspis Lankester, 1870
4 †Cornuata