| 
Country:
 | 
Great Britain 
 | 
| 
Province:
 | 
England,Yorkshire 
 | 
| 
Locality:
 | 
Swan bank Pit 
 | 
| 
Layer:
 | 
G2 | 
| 
Lower Boundary:
 | 
Yeadonian--Langsettian, Westph.A [YEA--, 313 million years
 
 | 
| 
Upper Boundary:
 | 
Langsettian--Duckmantian, Westphal.A--B, 311.3 million years
 
 | 
| 
Georeference:
 | 
 |