Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Freeport Formation  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Freeport Formation | |
| RT | Pennsylvania |
| Allegheny Group | |
| SN | In Allegheny Group. Added to Thesaurus in 1985. |