Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Lewis Shale  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Lewis Shale | |
| RT | New Mexico |
| Wyoming | |
| Colorado | |
| SN | Lewis and Meeteetse formations throughout N central Wyoming considered stratigraphic equivalents with Lewis being applied generally in areas where marine strata are present and Meeteetse in areas where rocks are nonmarine in character. W Colorado, NW New |