Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Heath Formation  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Mississippian | |
| .....Upper Mississippian | |
| ......Heath Formation | |
| RT | Montana |
| North Dakota | |
| Big Snowy Group | |
| SN | In Big Snowy Group. N central Montana and W North Dakota. Added to Thesaurus in 1989. |