Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Jefferson Group  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Devonian | |
| ....Upper Devonian | |
| .....Jefferson Group | |
| RT | Idaho |
| Utah | |
| Wyoming | |
| Montana | |
| Birdbear Formation | |
| Duperow Formation | |
| SN | Montana, Idaho, N Utah and W Wyoming. Added to Thesaurus in 1985. |