Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus | 
| Fountain Formation  | |
|---|---|
| BT | Chronostratigraphic Units | 
| .Phanerozoic | |
| ..Paleozoic | |
| ...upper Paleozoic | |
| ....Fountain Formation | |
| RT | Permian | 
| Pennsylvanian | |
| Wyoming | |
| Colorado | |
| SN | Pennsylvanian and Permian. E Colorado and SE Wyoming. Indexed with ages as applicable. Added to Thesaurus in 1985. |