Dinosauria Owen 1841 [Padian & May 1993], nom. cl. inval. see Clade Dinosauria Owen 1842 [Langer, Novas, Bittencourt, Ezcurra & Gauthier 2020]
Count: -
   †Ornithischia Seeley 1887 [Padian & May 1993] see Order Ornithischia Seeley, 1887
  Count: -
     †Genasauria Sereno 1986
    Count: -
       †Thyreophora Nopcsa 1915 see Suborder Thyreophora Nopcsa, 1915
      Count: [†*] †10g
         †Eurypoda Sereno 1986
        Count: [†*] †7g
           †Stegosauria Marsh 1877 see Infraorder Stegosauria Marsh, 1877
          Count: [†*] †3g
             †Stegosauridae Marsh 1880 see Family Stegosauridae Marsh, 1880
            Count: [†*] †2g
               †Stegosaurinae Abel 1919
              Count: [†*] †1g [16 Nov 2018]
                 Genus †Stegosaurus Marsh, 1877
                Count: -