Classification of Marsh 1870

G. †Leiodon Owen 1842
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Leiodon laticaudus Marsh 1870
G. †Mosasaurus Parkinson 1822
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Mosasaurus crassidens Marsh 1870
G. †Hadrosaurus Leidy 1858
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Hadrosaurus minor Marsh 1870
G. †Baptosaurus Marsh 1870
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Invalid names: Halisaurus Marsh 1869 [replaced]