Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Shadow Lake Formation  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Ordovician | |
| ....Middle Ordovician | |
| .....Shadow Lake Formation | |
| RT | Ontario |
| Pennsylvania | |
| New York | |
| SN | S Ontario, New York, and Pennsylvania. Added to Thesaurus in 1989. |