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
Phylum Chordata Bateson, 1885 - chordates
Subphylum Vertebrata Cuvier, 1812 - vertebrates
Myopterygii - myopterygians
Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
Grade Teleostomi Bonaparte, 1836
Euteleostomi - bony vertebrates
Clade Sarcopterygii Romer, 1955
[crown] Rhipidistia Cope, 1887
Clade Tetrapodomorpha Ahlberg, 1991
Clade Osteolepidimorpha
Clade Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
[crown] Clade Neotetrapoda
Clade Reptiliomorpha Säve-Söderbergh, 1934
Batrachosauria
[crown] Clade Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988] - amniotes
Class Reptilia Linnaeus, 1758 - reptiles
Eureptilia Olson, 1947
Romeriida Gauthier, Kluge & Rowe, 1988
Clade Diapsida Osborn 1903 [Gauthier & de Queiroz 2020]
[crown] Clade Neodiapsida Benton 1985
Clade Pan-Lepidosauria Gauthier & de Queiroz 2020, sedis mutabilis
[crown] Subclass Lepidosauria Duméril & Bibron, 1839
Clade Pan-Squamata Gauthier & de Queiroz 2020
[crown] Order Squamata Oppel, 1811
Bifurcata Vidal & Hedges, 2005
Unidentata Vidal & Hedges, 2005
Episquamata Vidal & Hedges, 2005
Toxicofera Vidal & Hedges, 2005
Suborder Anguimorpha Fürbringer, 1900
Neoanguimorphaᵀ Vidal & Hedges, 2009
Superfamily Xenosauroidea Cope, 1866 [monotypic]
Family Xenosauridaeᵀ Cope, 1866
Genus Xenosaurusᵀ Peters, 1861
1.1 Xenosaurus grandisᵀ (Gray, 1856)
1.2 Xenosaurus agrenon King & Thompson, 1968
1.3 Xenosaurus newmanorum Taylor, 1949
1.4 Xenosaurus rackhami Stuart, 1941
2 Xenosaurus mendozai Nieto-Montes de Oca, García-Vázquez, Zúñiga-Vega & Schmidt-Ballardo, 2013
3 Xenosaurus penai Pérez Ramos, Saldaña de la Riva & Campbell, 2000
4 Xenosaurus phalaroanthereon Nieto-Montes de Oca, Campbell & Flores-Villela, 2001
5 Xenosaurus platyceps King & Thompson, 1968
6 Xenosaurus rectocollaris Smith & Iverson, 1993
7 Xenosaurus tzacualtipantecus Woolrich-Piña & Smith, 2012