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 dorsates Cavalier-Smith, 2021
                  
 Clade podiates Cavalier-Smith, 2012
                    
 Clade Amorphea Adl et al. 2012 [Simpson, Medina & Adl 2020]
                      
 Clade Obazoa Brown, Sharpe, Silberman, Heiss, Lang, Simpson & Roger 2013
                        
 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 Craniata auct.
                                            
 Infraphylum Vertebrata Lamarck, 1801 - vertebrates
                                              
 Clade Pan-Gnathostomata Downs 2020
                                                
 Superclass Gnathostomataᵀ Gegenbaur, 1874 - jawed vertebrates
                                                  
 [crown] Clade Eugnathostomata
                                                    
 Clade Pan-Osteichthyes Rowe 2004 [Moore & Near 2020]
                                                      
 Clade Osteichthyes Huxley 1880 [Moore & Near 2020]
                                                        
 Clade Pan-Sarcopterygii
                                                          
 Clade Sarcopterygii Romer, 1955
                                                            
 Clade Dipnotetrapodomorpha Nelson, 2006
                                                              
 Clade Rhipidistia Cope, 1887
                                                                
 Clade Tetrapodomorpha Ahlberg, 1991
                                                                  
 Clade Osteolepidida Boulenger 1901 [Cloutier & Ahlberg 1996]
                                                                    
 Clade Eotetrapodiformes Coates & Friedman, 2010
                                                                      
 [crown] Clade Elpistostegalia Camp & Allison, 1961
                                                                        
 Clade Stegocephali Cope 1868 [Laurin 2020]
                                                                          
 Clade Labyrinthodontia Owen 1859 [Laurin 2020]
                                                                            
 Clade Tetrapoda Hatschek & Cori 1896 [Laurin 2020]
                                                                              
 Clade Pan-Amniota Rowe 2004 [Laurin & Smithson 2020]
                                                                                
 Clade Batrachosauria
                                                                                  
 Clade Amniota Haeckel 1866 [Laurin & Reisz 2020]
                                                                                    
 Class Reptilia Linnaeus, 1758 - reptiles
                                                                                      
 Subclass †Parareptilia Olson, 1947
                                                                                        
 Order †Procolophonomorpha Romer, 1964
                                                                                          
 Clade †Ankyramorpha deBraga & Reisz 1996
                                                                                            
 Clade †Procolophonia Seeley 1888 [Laurin & Reisz 1995]
                                                                                              
 Superfamily †Procolophonoideaᵀ Cope, 1889
                                                                                                
 Family †Procolophonidaeᵀ Lydekker, 1889
                                                                                                  
 01 ?Genus †Estheriophagus Novozhilov, 1948
                                                                                                  
 02 ?Genus †Microcnemus Huene, 1940
                                                                                                  
 03 ?Genus †Santaisaurus Koh, 1940
                                                                                                  
 04 ?Genus †Gomphiosauridion Sues & Olsen, 1993 [monotypic]
                                                                                                  
 05 ?Genus †Spondylolestes Broom, 1937 [monotypic]
                                                                                                  
 06 Genus †Anomoiodon Huene, 1939, incertae sedis
                                                                                                  
 07 Genus †Koiloskiosaurus Huene, 1911, incertae sedis
                                                                                                  
 08 Genus †Macrophon Ivakhnenko, 1975, incertae sedis
                                                                                                  
 09 Genus †Microtheledon Broom, 1936, nom. dub., incertae sedis
                                                                                                  
 10 Genus †Myocephalus Broom, 1936, incertae sedis
                                                                                                  
 11 Genus †Myognathus Broom, 1936, incertae sedis
                                                                                                  
 12 Genus †Orenburgia Ivakhnenko, 1975, incertae sedis
                                                                                                  
 13 Genus †Sphodrosaurus Colbert, 1960, incertae sedis
                                                                                                  
 14 Genus †Suchonosaurus Tverdokhlebova & Ivakhnenko, 1994, incertae sedis [monotypic]
                                                                                                  
 15 [plesion] Genus †Coletta Gow, 2000, sedis mutabilis [monotypic]
                                                                                                  
 16 [plesion] Genus †Pintosaurus Piñeiro, Rojas & Ubilla, 2004, sedis mutabilis [monotypic]
                                                                                                  
 17 [plesion] Genus †Sauropareion Modesto, Sues & Damiani, 2001, sedis mutabilis [monotypic]
                                                                                                  
 18.1.1 [plesion, p.p.] Genus †Phaanthosaurus Chudinov & V'yushkov, 1956
                                                                                                  
 18.1.2 [plesion, p.p.] Genus †Contritosaurus Ivakhnenko, 1974 [monotypic]
                                                                                                  
 18.2.1 Subfamily †Theledectinae Cisneros, 2008
                                                                                                  
 18.2.2.1 [plesion] Genus †Tichvinskia Chudinov & V'yushkov, 1956 [monotypic]
                                                                                                  
 18.2.2.2 Clade †"horned procolophonids"