Classification of Arldt 1909

Or. Saurischia Seeley 1888 [saurischian]
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Fm. †Ceratosauridae Marsh 1884
Fm. †Coeluridae Marsh 1881 [coelurid]
Fm. †Compsognathidae Cope 1871 [compsognathid]
Fm. †Megalosauridae Fitzinger 1843
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G. †Megalosaurus Parkinson 1822
Fm. †Plateosauridae Marsh 1895 [plateosaurid]
Subor. †Sauropoda Marsh 1878 [sauropod]
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G. †Algoasaurus Broom 1904 [Algoa lizard]
G. †Argyrosaurus Lydekker 1893
Fm. †Atlantosauridae Marsh 1877 [atlantosaurid]
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G. †Atlantosaurus Marsh 1877
Fm. †Cetiosauridae Lydekker 1888 [cetiosaurid]
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G. †Cetiosaurus Owen 1841
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†Cetiosaurus longus Owen 1842
G. †Pelorosaurus Mantell 1850
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Invalid names: Bothriospondylus Owen 1875 [synonym]
Fm. †Diplodocidae Marsh 1884 [diplodocid]
Invalid names: Morosauridae Marsh 1882 [empty]
Fm. †Thecodontosauridae Lydekker 1890
Invalid names: Gresslyosauridae Arldt 1909 [empty], Sellosauridae Huene 1908 [empty], Zanclodontidae Marsh 1882 [empty]
Or. †Ornithischia Seeley 1888 [ornithischian]
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Subor. †Ceratopsia Marsh 1890 [ceratopsian]
Subor. †Ornithopoda Marsh 1881 [ornithopod]
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Fm. †Camptosauridae Marsh 1885 [camptosaurid]
Fm. †Iguanodontidae Bonaparte 1850 [iguanodontid]
Fm. †Trachodontidae Lydekker 1888
Invalid names: Nanosauridae Marsh 1878 [empty]
Subor. †Orthopoda Cope 1866
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Fm. †Ankylosauridae Brown 1908 [ankylosaurid]
Invalid names: Omosauridae Lydekker 1888 [empty]