Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Imo Formation  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Mississippian | |
| .....Upper Mississippian | |
| ......Chesterian | |
| .......Imo Formation | |
| RT | Oklahoma |
| Illinois | |
| Arkansas | |
| SN | Before 1989, also search Imo Shale AND United States. Added to Thesaurus in 1989. |