Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Amsden Formation  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Amsden Formation | |
| RT | Mississippian |
| Pennsylvanian | |
| Wyoming | |
| Montana | |
| North Dakota | |
| SN | In Montchauve Group. Montana, Wyoming and North Dakota. Added to Thesaurus in 1985. |