Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Bigfork Chert  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Ordovician | |
| ....Middle Ordovician | |
| .....Bigfork Chert | |
| UF | Big Fork Chert |
| RT | Oklahoma |
| Texas | |
| Arkansas | |
| Ouachita Belt | |
| SN | SW Arkansas, SE Oklahoma, and Texas. Added to Thesaurus in 1995. |