| 
Country:
 | 
Great Britain 
 | 
| 
Province:
 | 
England,Staffordshire 
 | 
| 
Locality:
 | 
Nettlebank (Gin Mine) 
 | 
| 
Layer:
 | 
base of Westphal C | 
| 
Lower Boundary:
 | 
Duckmantian--Bolsovian, Westphal.B--C, 310.6 million years
 
 | 
| 
Upper Boundary:
 | 
DER Westphalian C1--Westphalian C2, 310 million years
 
 | 
| 
Georeference:
 | 
 |