Vertebrata Cuvier, 1812 - vertebrates
Count: [f†f] 7c;100o;734f; ‡2o;8f; †2c;109o;819f;10g [22 Aug 2017]
   Gnathostomata
  Count: [f†f] 6c;98o;732f; ‡2o;8f; †2c;104o;782f;9g [22 Aug 2017]
     Teleostomi
    Count: [f†f] 5c;94o;691f; ‡2o;8f; †1c;82o;712f;7g [22 Aug 2017]
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
      Count: [f†f] 4c;54o;292f; ‡2o;8f; †56o;574f;3g [22 Aug 2017]
         Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988] - amniotes
        Count: [f†f] 3c;51o;265f; ‡2o;8f; †48o;494f;3g [22 Aug 2017]
           Class Reptilia Linnaeus, 1758 [paraphyletic] - reptiles
          Count: [f†f] 4o;48f; †19o;242f;2g [29 Jul 2017]
             Subclass †Synapsida Osborn, 1903 - synapsids see Class Synapsida Osborn, 1903
            Count: [†f] †2o;55f [29 Jul 2017]
               1 Order †Pelycosauria Cope, 1878 - pelycosaurs
              Count: [†f] †6f [27 Jul 2017]
               2 Order †Therapsida Broom, 1905 see [unranked] Therapsida Broom, 1905
              Count: [†f] †49f [29 Jul 2017]