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Fossil collection records
Fossil organisms
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Classification of Cope 1870
Or.
Dinosauria
Owen 1842 [dinosaur]
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G. †
Bathygnathus
Leidy 1853
G. †
Clepsysaurus
Lea 1851
G. †
Megadactylus
Hitchcock 1865
G. †
Pneumatoarthrus
Cope 1870
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†
Pneumatoarthrus peloreus
Cope 1870