Vertebrata Cuvier, 1812 - vertebrates
 see Infraphylum Vertebrata Lamarck, 1801
  
 Gnathostomata
    
 Teleostomi Bonaparte, 1836
      
 Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988], nom. cl. inval.
 see Clade Tetrapoda Hatschek & Cori 1896 [Laurin 2020]
        
 Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988], nom. cl. inval. - amniotes
 see Clade Amniota Haeckel 1866 [Laurin & Reisz 2020]
          
 Class Mammalia Linnaeus, 1758 - mammals
            
 Subclass Theria Parker & Haswell, 1897
              
 Theria of Metatherian-Eutherian grade
                
 Infraclass Eutheria Gill, 1872
                  
 Order Xenarthra Cope, 1889 - xenarthrans
 see Magnorder Xenarthra Cope, 1889
                    
 Infraorder Loricata Owen, 1842
                      
 Superfamily Dasypodoidea Gray, 1821
                        
 Family †Palaeopeltidae Ameghino, 1895