Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Valmeyeran  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Mississippian | |
| .....Valmeyeran | |
| RT | Lower Mississippian |
| Upper Mississippian | |
| Meramecian | |
| Osagian | |
| SN | Provincial series, Illinois. Lower and Upper Mississippian. Equivalent to Osagian and Meramecian elsewhere. |