| 
Country:
 | 
Great Britain 
 | 
| 
Province:
 | 
England,Yorkshire 
 | 
| 
Locality:
 | 
Bolton Gill, nw Dibbles Bridge 
 | 
| 
Layer:
 | 
Millstone Grit,Cockhill Lmst. | 
| 
Lower Boundary:
 | 
GBY E1c--E2a1 (Crav.malham.--cowling.), 324 million years
 
 | 
| 
Upper Boundary:
 | 
GBY E2a1--E2a2 (cowlingense--bisulcatum), 323.5 million years
 
 | 
| 
Georeference:
 | 
 |