Classification of Buffetaut and Ingavat 1992

Or. †Ornithischia Seeley 1888 [ornithischian]
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Subor. †Ceratopsia Marsh 1890 [ceratopsian]
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Fm. †Psittacosauridae Osborn 1923
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G. †Psittacosaurus Osborn 1923
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Psittacosaurus sattayaraki Buffetaut and Ingavat 1992
Unr. Dinosauria Owen 1842 [dinosaur]
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Unr. †Ornithischia Seeley 1888 [ornithischian]