| details |
Stephanian B |
Early Autunian |
France(Nievre) |
Carpena,J. et al. The Acid Volcanism of West Morvan in its geologic frame. Geochemical, structural and chronological characters of intrusion. |
1984 |
| details |
Artinskian |
|
Brazil(Santa Catarina) |
Bortoluzzi,C.A. et al. Geologic investigations of the Santa Catarina Coal Basin, stratigraphy, sedimentology, paleontology and petrography of coals. |
1978 |
| original |
Westphalian D |
|
France |
Alpern,B. et al. Description of some microspores of the French Permo-Carboniferous. |
1958 |