Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Wichita Group  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Permian | |
| ....Lower Permian | |
| .....Wichita Group | |
| RT | Oklahoma |
| Texas | |
| SN | N and central Texas, and W Oklahoma. Also search Wichita Formation. Added to Thesaurus in 1985. |