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: -
†Neornithischia Cooper 1985
Count: -
†Ornithopoda Marsh 1881
see Infraorder Ornithopoda Marsh, 1881
Count: -
†Euornithopoda Sereno 1986
Count: -
†Iguanodontia Dollo 1888
Count: -
†Ankylopollexia Sereno 1986
Count: -
†Styracosterna Sereno 1986
Count: -
†Hadrosauriformes Sereno 1997
Count: -
†Hadrosauroidea Sereno 1986
see Superfamily Hadrosauroidea Cope, 1869
Count: -
†Hadrosauridae Cope 1869
see Family Hadrosauridae Cope, 1869
Count: -
1 †Hadrosaurinae Lambe 1918
see Subfamily Hadrosaurinae Cope, 1869
Count: -
2 †Lambeosaurinae Parks 1923
see Subfamily Lambeosaurinae Parks, 1923
Count: -