Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Sentinel Butte Formation  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Paleocene | |
| .....Sentinel Butte Formation | |
| RT | Montana |
| North Dakota | |
| Fort Union Formation | |
| SN | In Fort Union Formation. Overlies Tongue River Member. NE Montana, and SW North Dakota. |