Classification of Thulborn 1971
Or. †Ornithischia Seeley 1888 [ornithischian]
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Subor. †Ceratopsia Marsh 1890 [ceratopsian]
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Fm. †Ceratopsidae Marsh 1888 [ceratopsid]
Fm. †Protoceratopsidae Granger and Gregory 1923
Fm. †Psittacosauridae Osborn 1923
Subor. †Stegosauria Marsh 1877
Invalid names: Lycorhinidae Thulborn 1971 [empty]
Fm. †Fabrosauridae Galton 1972
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G. †Fabrosaurus Ginsburg 1964 [Fabre's lizard]
G. †Pisanosaurus Casamiquela 1967
G. †Tatisaurus Simmons 1965
Fm. †Hypsilophodontidae Dollo 1882 [hypsilophodontid]
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G. †Echinodon Owen 1861
G. †Hypsilophodon Huxley 1870
G. †Laosaurus Marsh 1878
G. †Nanosaurus Marsh 1877
G. †Parksosaurus Sternberg 1937
G. †Thescelosaurus Gilmore 1913
Fm. †Iguanodontidae Bonaparte 1850 [iguanodontid]
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G. †Dysalotosaurus Virchow 1919