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 Mammalia Linnaeus, 1758 - mammals
          Count: [f†f] 20o;119f; ‡5f; †23o;215f;1g [22 Aug 2017]
             Subclass †Allotheria Marsh, 1880 [monotypic]
            Count: [†f] †1o;13f [31 Jul 2017]
               Order †Multituberculata Cope, 1884
              Count: [†f] †13f [31 Jul 2017]
                 Suborder †Ptilodontoidea Sloan & Van Valen, 1965 see Superfamily Ptilodontoidea Gregory & Simpson, 1926 (1887)
                Count: [†f] †4f [31 Jul 2017]
                   Family †Neoplagiaulacidae Ameghino, 1890
                  Count: -