Classification of Madsen and Miller 1979

Cl. Reptilia Laurenti 1768 [reptile]
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Or. †Ornithischia Seeley 1888 [ornithischian]
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Fm. †Ceratopsidae Marsh 1888 [ceratopsid]
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G. †Arrhinoceratops Parks 1925
G. †Triceratops Marsh 1889
Fm. †Hadrosauridae Cope 1869 [hadrosaurid]
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G. †Hadrosaurus Leidy 1858
G. †Thespesius Leidy 1856
G. †Trachodon Leidy 1856
Fm. †Hypsilophodontidae Dollo 1882 [hypsilophodontid]
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G. †Dryosaurus Marsh 1894
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†Dryosaurus altus Marsh 1878
†Dryosaurus lettowvorbecki Virchow 1919
G. †Hypsilophodon Huxley 1870
G. †Laosaurus Marsh 1878
G. †Nanosaurus Marsh 1877
Fm. †Iguanodontidae Bonaparte 1850 [iguanodontid]
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G. †Camptosaurus Marsh 1885
G. †Iguanodon Mantell 1825
Invalid names: Camptosauridae Marsh 1885 [synonym]
Fm. †Nodosauridae Marsh 1890
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G. †Hoplitosaurus Lucas 1902
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†Hoplitosaurus marshi Lucas 1901
Fm. †Stegosauridae Marsh 1880
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G. †Stegosaurus Marsh 1877
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Invalid names: Diracodon Marsh 1881 [synonym]
Or. Saurischia Seeley 1888 [saurischian]
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Fm. †Brachiosauridae Riggs 1904 [brachiosaurid]
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G. †Barosaurus Marsh 1890
G. †Brachiosaurus Riggs 1903
G. †Haplocanthosaurus Hatcher 1903
Fm. †Coeluridae Marsh 1881 [coelurid]
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G. †Coelurus Marsh 1879
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Invalid names: Ornitholestes Osborn 1903 [synonym]
Fm. †Diplodocidae Marsh 1884 [diplodocid]
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G. †Ammosaurus Marsh 1891
G. †Diplodocus Marsh 1878
Fm. †Megalosauridae Fitzinger 1843
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G. †Allosaurus Marsh 1877
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†Allosaurus fragilis Marsh 1877
Invalid names: Antrodemus Leidy 1873 [synonym]
G. †Ceratosaurus Marsh 1884
G. †Dilophosaurus Welles 1970
G. †Iliosuchus Huene 1932
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†Iliosuchus incognitus Huene 1932
Invalid names: Stokesosaurus Madsen 1974 [synonym]
G. †Marshosaurus Madsen, Jr. 1976
G. †Megalosaurus Parkinson 1822
Fm. †Titanosauridae Lydekker 1885 [titanosaurid]
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G. †Apatosaurus Marsh 1877
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Invalid names: Atlantosaurus Marsh 1877 [synonym], Brontosaurus Marsh 1879 [synonym]
G. †Astrodon Johnston 1859
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Invalid names: Pleurocoelus Marsh 1888 [synonym]
G. †Camarasaurus Cope 1877
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Invalid names: Dystrophaeus Cope 1877 [synonym], Morosaurus Marsh 1878 [synonym], Uintasaurus Holland 1919 [synonym]
Fm. †Tyrannosauridae Osborn 1906 [tyrannosaurid]
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G. †Tyrannosaurus Osborn 1905 [tyrant lizard]
Invalid names: Procompsognathidae Huene 1929 [empty], Segisauridae Camp 1936 [empty]
G. †Polacanthus Fox 1866
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†Polacanthus foxi Grabau 1921
Subor. Theropoda Marsh 1881 [theropod]
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G. †Anchisauripes Lull 1904
G. †Eubrontes Hitchcock 1845
G. †Grallator Hitchcock 1858