| 
Country:
 | 
Czech Republic 
 | 
| 
Province:
 | 
North Moravia 
 | 
| 
Locality:
 | 
Ostrava, Sophienschacht 
 | 
| 
Layer:
 | 
upper Ostrau beds, Gaebler horizon | 
| 
Lower Boundary:
 | 
Arnsbergian--Chokierian [ARN--CHO], 319 million years
 
 | 
| 
Upper Boundary:
 | 
Alportian--Kinderscoutian     [ALP--KIN], 317 million years
 
 | 
| 
Georeference:
 | 
 |