Classification of Marsh 1877

G. †Dryptosaurus Marsh 1877
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Invalid names: Laelaps Cope 1866 [replaced]
G. †Hadrosaurus Leidy 1858
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†Hadrosaurus agilis Marsh 1872
Or. Artiodactyla Owen 1848 [even-toed ungulate]
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Fm. †Helohyidae Marsh 1877
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G. †Helohyus Marsh 1872
G. †Amphisaurus Marsh 1882
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Invalid names: Megadactylus Hitchcock 1865 [replaced]
G. †Titanosaurus Marsh 1877
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†Titanosaurus montanus Marsh 1877