| original |
Westphalian B |
Early Westphalian C |
France(Paris Basin) |
Loboziak,S. The genus Colisporites, Pot. and Kr., in the Coal Basin of the North of France. |
1963 |
| details |
Westphalian C |
|
France(Pas-de-Calais) |
Loboziak,S. Identification and correlation by megaspores of seams at the base of the Westphalian C in the Group of Auchel-Bruay of the HBNPC. |
1965 |
| details |
Nd |
|
Nd |
Spinner,E. Contribution on the megaspore genus Tuberculatisporites (Ibrahim)Potonie and Kremp,1954. |
1968 |
| details |
Westphalian B |
Westphalian C |
France |
Braman,D.R. et al. The stratigraphic and geographic distribution of Carboniferous megaspores. |
1980 |