Country:
|
France
|
Province:
|
Nord-Pas-de-Calais
|
Locality:
|
Valenciennes,Houillères
|
Layer:
|
Huds.proteus horizon pl.A |
Lower Boundary:
|
Chokierian--Alportian [CHO--ALP], 317.7 million years
|
Upper Boundary:
|
Alportian--Kinderscoutian [ALP--KIN], 317 million years
|
Georeference:
|
|