SEDIS - Thesaurus
Parkman Sandstone  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Parkman Sandstone | |
| RT | Wyoming |
| Montana | |
| Montana Group | |
| Judith River Formation | |
| SN | In Montana Group. N Wyoming and S Montana. |
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