Classification of Romer 1972

Or. †Thecodontia Owen 1859
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G. †Spondylosoma Huene 1942
Fm. †Proterosuchidae Broom 1906
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G. †Proterosuchus Broom 1903
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Invalid names: Ankistrodon Huxley 1865 [synonym], Epicampodon Lydekker 1885 [synonym]
Subor. †Pseudosuchia Zittel 1890
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G. †Lagosuchus Romer 1971 [rabbit crocodile]
G. †Lewisuchus Romer 1972
G. †Triassolestes Reig 1963
Invalid names: Scleromochlidae Huene 1914 [empty]