Classification of Bakker and Galton 1974

Amniota Haeckel 1866 [amniote]
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Subcl. Archosauria Cope 1869 [archosaur]
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Or. Crocodylia Owen 1842 [crocodilian]
Or. †Pterosauria Kaup 1834 [pterosaur]
Or. †Thecodontia Owen 1859
Cl. Dinosauria Owen 1842 [dinosaur]
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Or. Aves Linnaeus 1758 [bird]
Subcl. †Ornithischia Seeley 1888 [ornithischian]
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Or. †Ankylosauria Osborn 1923
Or. †Ceratopsia Marsh 1890
G. †Fabrosaurus Ginsburg 1964 [Fabre's lizard]
Or. †Ornithopoda Marsh 1881 [bird foot dinosaur]
G. †Pisanosaurus Casamiquela 1967
Or. †Stegosauria Marsh 1877
Subcl. Saurischia Seeley 1888 [saurischian]
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Or. †Sauropodomorpha Huene 1932
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Subor. †Prosauropoda Huene 1920 [prosauropod]
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G. †Ammosaurus Marsh 1891
G. †Anchisaurus Marsh 1885
G. †Massospondylus Owen 1854
G. †Plateosaurus Meyer 1837
Subor. †Sauropoda Marsh 1878 [sauropod]
Or. Theropoda Marsh 1881 [theropod]
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G. †Herrerasaurus Reig 1963
G. †Ischisaurus Reig 1963