| 
Country:
 | 
Poland 
 | 
| 
Province:
 | 
Lublin Coal Basin 
 | 
| 
Locality:
 | 
Swidnik 2 borehole 
 | 
| 
Layer:
 | 
R1, 1360-1366 m | 
| 
Lower Boundary:
 | 
Alportian--Kinderscoutian     [ALP--KIN], 317 million years
 
 | 
| 
Upper Boundary:
 | 
Kinderscoutian--Marsdenian    [KIN--MRD], 315 million years
 
 | 
| 
Georeference:
 | 
 |