Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Smithwick Shale  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Smithwick Shale | |
| RT | Texas |
| SN | Lower and Middle Pennsylvanian. In Bend Group. Central Texas. Added to Thesaurus in 1985. |