Vertebrata Cuvier, 1812 - vertebrates
Status: extant; Count: [f†f] 7c;100o;734f; ‡2o;8f; †2c;109o;819f;10g [22 Aug 2017]
   Gnathostomata
  Status: extant; Count: [f†f] 6c;98o;732f; ‡2o;8f; †2c;104o;782f;9g [22 Aug 2017]
     Teleostomi
    Status: extant; Count: [f†f] 5c;94o;691f; ‡2o;8f; †1c;82o;712f;7g [22 Aug 2017]
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
      Status: extant; Count: [f†f] 4c;54o;292f; ‡2o;8f; †56o;574f;3g [22 Aug 2017]
         Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988] - amniotes
        Status: extant; Count: [f†f] 3c;51o;265f; ‡2o;8f; †48o;494f;3g [22 Aug 2017]
           Class Reptilia Linnaeus, 1758 [paraphyletic] - reptiles
          Status: extant; Count: [f†f] 4o;48f; †19o;242f;2g [29 Jul 2017]
             Subclass Diapsida Osborn, 1903 - diapsids see Clade Diapsida Osborn 1903 [Gauthier & de Queiroz 2020]
            Status: extant; Count: [f†f] 3o;37f; †14o;150f;1g [27 Jul 2017]
               Infraclass Lepidosauromorpha Benton, 1983 see Subclass Lepidosauromorpha Benton, 1983
              Status: extant; Count: [f†f] 2o;34f; †3o;38f;1g [9 Jul 2017]
                 Superorder Lepidosauria Haeckel, 1866 see Superorder Lepidosauriformes Gauthier, Estes & de Queiroz, 1988
                Status: extant; Count: [f†f] 2o;34f; †24f [7 Jul 2017]
                   Order Squamata Oppel, 1811
                  Status: extant; Count: [f†f] 33f; †22f [7 Jul 2017]
                     Suborder Lacertilia Owen, 1842
                    Status: extant; Count: [f†f] 21f; †17f [7 Jul 2017]
                       Infraorder Annulata see Suborder Amphisbaenia Gray, 1844
                      Status: extant; Count: [f†f] 4f; †2f [6 Jul 2017]
                         Family Rhineuridae Vanzolini, 1951
                        Status: extant; Count: -