Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Krebs Group  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Middle Pennsylvanian | |
| ......Desmoinesian | |
| .......Krebs Group | |
| RT | Missouri |
| Oklahoma | |
| Kansas | |
| Boggy Shale | |
| Hartshorne Sandstone | |
| Savanna Formation | |
| SN | Central and NE Oklahoma, SE Kansas and W Missouri. Added to Thesaurus in 1985. |