Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Gammon Ferruginous Member  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Gammon Ferruginous Member | |
| RT | Wyoming |
| Montana | |
| South Dakota | |
| Pierre Shale | |
| SN | Of Pierre Shale. NE Wyoming, SE Montana and NW South Dakota. Added to Thesaurus in 1985. |