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
                                                                                      
 Clade Eureptilia Olson, 1947
                                                                                        
 Clade Romeriida Gauthier, Kluge & Rowe, 1988
                                                                                          
 Clade Diapsida Osborn 1903 [Gauthier & de Queiroz 2020]
                                                                                            
 Clade Neodiapsida Benton 1985
                                                                                              
 Clade Pan-Archelosauria W.G. Joyce, J. Anquetin, E. Cadena, J. Claude, I.G. Danilov, S.W. Evers, ..., J.F. Parham 2021, sedis mutabilis
                                                                                                
 Clade Archelosauria N.G. Crawford, J.F. Parham, A.B. Sellas, B.C. Faircloth, T.C. Glenn, T.J. Papenfuss, ..., W.B. Simison 2015 [W.G. Joyce, J. Anquetin, E. Cadena, J. Claude, I.G. Danilov, S.W. Evers, ..., J.F. Parham 2021]
                                                                                                  
 Clade Pan-Archosauria Gauthier 2020
                                                                                                    
 Clade Archosauromorpha von Huene 1946 [Gauthier 2020]
                                                                                                      
 Clade Crocopoda Ezcurra 2016
                                                                                                        
 Clade Archosauriformes Gauthier 1994 [Gauthier 2020]
                                                                                                          
 Clade Crurotarsi Sereno & Arcucci 1990
                                                                                                            
 Clade Archosauriaᵀ Cope 1869 [Gauthier & Padian 2020]
                                                                                                              
 Clade Pan-Aves Gauthier & de Queiroz 2001 [M. Ezcurra, S. Nesbitt, M. Bronzati, F. Dalla Vecchia, F. Agnolin, R. Benson, ..., M. Langer 2020]
                                                                                                                
 Clade Ornithodira Gauthier 1986 [M. Ezcurra, S. Nesbitt, M. Bronzati, F. Dalla Vecchia, F. Agnolin, R. Benson, ..., M. Langer 2020]
                                                                                                                  
 Clade Dinosauromorpha Benton 1985 [M. Ezcurra, S. Nesbitt, M. Bronzati, F. Dalla Vecchia, F. Agnolin, R. Benson, ..., M. Langer 2020]
                                                                                                                    
 Clade Dinosauriformes Novas 1992 [M. Ezcurra, S. Nesbitt, M. Bronzati, F. Dalla Vecchia, F. Agnolin, R. Benson, ..., M. Langer 2020]
                                                                                                                      
 Clade Dracohorsᵀ Cau 2018
                                                                                                                        
 Clade Dinosauria Owen 1842 [Langer, Novas, Bittencourt, Ezcurra & Gauthier 2020]
                                                                                                                          
 Clade Saurischiaᵀ Seeley 1888 [Gauthier, Langer, Novas, Bittencourt & Ezcurra 2020]
                                                                                                                            
 Clade Eusaurischia Padian et al. 1999
                                                                                                                              
 Clade Theropoda Marsh 1881 [Naish, Cau, Holtz Jr., Fabbri & Gauthier 2020]
                                                                                                                                
 Clade Neotheropoda Bakker 1986 [Sereno 1998]
                                                                                                                                  
 Clade Averostraᵀ Paul 2002
                                                                                                                                    
 Clade Tetanurae Gauthier 1986
                                                                                                                                      
 Clade Orionides Carrano, Benson & Sampson 2012
                                                                                                                                        
 Clade Avetheropoda Paul 1988 [Padian et al. 1999]
                                                                                                                                          
 Clade Coelurosauria Huene 1914 [Gauthier 1986]
                                                                                                                                            
 Clade Tyrannoraptora Sereno 1999, nom. cl. inval.
                                                                                                                                              
 Clade Maniraptoriformes Holtz 1995 [Holtz 1996]
                                                                                                                                                
 Clade Maniraptora Gauthier 1986
                                                                                                                                                  
 Clade Pennaraptora Foth et al. 2014
                                                                                                                                                    
 Clade Paraves Sereno 1997 [Sereno 1998]
                                                                                                                                                      
 Clade Avialae Gauthier 1986
                                                                                                                                                        
 Subclass Aves Linnaeus, 1758
                                                                                                                                                          
 Clade Pygostylia Chatterjee 1997 [Chiappe 2001]
                                                                                                                                                            
 Clade Ornithothoraces Chiappe 1995
                                                                                                                                                              
 Clade Ornithuromorpha Chiappe 2001
                                                                                                                                                                
 Clade Ornithurae Haeckel 1866 [Gauthier 1986] {Chiappe 1991}
                                                                                                                                                                  
 Clade Carinatae Merrem 1813 [Gauthier & de Queiroz 2001]
                                                                                                                                                                    
 [crown] Clade Neornithes Gadow, 1893 - living birds
                                                                                                                                                                      
 Cohort Neognathae Pycraft, 1900
                                                                                                                                                                        
 Subcohort Galloanserae Sibley, Ahlquist & Monroe Jr., 1988 [monotypic]
                                                                                                                                                                          
 Superorder Galloanserimorphaeᵀ Sibley, Ahlquist & Monroe Jr., 1988
                                                                                                                                                                            
 Order Anseriformes Wagler, 1831 - waterfowl and screamers
                                                                                                                                                                              
 Suborder Anseresᵀ Linnaeus, 1758 - waterfowl
                                                                                                                                                                                
 Superfamily Anatoidea Vigors, 1825
                                                                                                                                                                                  
 Family Anatidaeᵀ Vigors, 1825 - ducks, geese, swans
                                                                                                                                                                                    
 Subfamily Anserinae Vigors, 1825 - geese
                                                                                                                                                                                      
 Genus Branta Scopoli, 1769 - Canada goose
                                                                                                                                                                                        
 Branta canadensis (Linnaeus, 1758) - Canada goose
                                                                                                                                                                                          
 01 ‡Branta canadensis asiatica Aldrich, 1946
                                                                                                                                                                                          
 02 Branta canadensis leucopareia (Brandt, 1836) - tundra goose
                                                                                                                                                                                          
 03 Branta canadensis minima Ridgway, 1885 - cackling goose
                                                                                                                                                                                          
 04 Branta canadensis occidentalis (Baird, 1858)
                                                                                                                                                                                          
 05 Branta canadensis fulva Delacour, 1951
                                                                                                                                                                                          
 06 Branta canadensis maxima Delacour, 1951
                                                                                                                                                                                          
 07 Branta canadensis taverneri Delacour, 1951
                                                                                                                                                                                          
 08 Branta canadensis parvipes (Cassin, 1852)
                                                                                                                                                                                          
 09 Branta canadensis moffitti Aldrich, 1946
                                                                                                                                                                                          
 10 Branta canadensis hutchinsii (Richardson, 1832) - Hutchins's goose
                                                                                                                                                                                          
 11 Branta canadensis interior Todd, 1938
                                                                                                                                                                                          
 12 Branta canadensis canadensisᵀ (Linnaeus, 1758) - Canada goose