| Cymerig Limestone | |
|---|---|
| Stratigraphic range: Ordovician | |
| Type | Formation | 
| Lithology | |
| Primary | Limestone | 
| Location | |
| Region | Wales | 
| Country | United Kingdom | 
The Cymerig Limestone is a geologic formation in Wales. It preserves fossils dating back to the Ordovician period.