Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Swift Formation  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Jurassic | |
| ....Upper Jurassic | |
| .....Swift Formation | |
| RT | Wyoming |
| Montana | |
| North Dakota | |
| South Dakota | |
| SN | In Ellis Group. N central Montana, W South Dakota, North Dakota and E Wyoming. Added to Thesaurus in 1985. |