Carnosauria - 1990
Ceratopsia - 1990
Ceratosauria - 1990
Hadrosauridae - 1990
Heterodontosauridae - 1990
Hypsilophodontidae, Tenontosaurus, Dryosauridae - 1990
Iguanodontidae and related ornithopods - 1990
Marginocephalia - 1990
Neoceratopsia - 1990
Pachycephalosauria - 1990
Sauropoda - 1990
Staurikosaurus and Herrerasauridae - 1990
Theropoda - 1990