| 
Country:
 | 
Portugal 
 | 
| 
Province:
 | 
Baixo Alentejo 
 | 
| 
Locality:
 | 
Montes Alves, 10 km E of Mértola 
 | 
| 
Layer:
 | 
Flysch sequence | 
| 
Lower Boundary:
 | 
DER Go alpha 3--Go alpha 4  [13.00], 332 million years
 
 | 
| 
Upper Boundary:
 | 
DER Go beta striatus--Go beta falcatus, 329.4 million years
 
 | 
| 
Georeference:
 | 
 |