Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Allegheny Group  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Middle Pennsylvanian | |
| ......Allegheny Group | |
| UF | Alleghanian |
| Alleghenian | |
| RT | Virginia |
| Kentucky | |
| Ohio | |
| Pennsylvania | |
| Maryland | |
| West Virginia | |
| Freeport Formation | |
| Kittanning Formation | |
| SN | Subdivided into three formations: Clarion, Kittanning, and Freeport. E Kentucky, W Maryland, E Ohio, W Pennsylvania, W Virginia, and West Virginia. Above Pottsville Group; below Conemaugh Group. |