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| First Page | Document Content | |
|---|---|---|
 Date: 2006-10-11 10:57:08Hell Creek Formation Fox Hills Formation Cretaceous Maastrichtian Bearpaw Formation Phanerozoic Geologic time scale Mesozoic |
| First Page | Document Content | |
|---|---|---|
Date: 2006-10-11 10:57:08Hell Creek Formation Fox Hills Formation Cretaceous Maastrichtian Bearpaw Formation Phanerozoic Geologic time scale Mesozoic |
