| details |
Westphalian B |
Westphalian C |
Germany |
Schopf,J.M. et al. An annotated synopsis of Paleozoic fossil spores and the definition of generic groups. |
1944 |
| details |
Middle Pennsylvanian |
|
Illinois |
Brokaw,A.L. Spores from Coal No.5 (Springfield-Harrisburg) in Illinois. |
1942 |
| details |
Westphalian |
|
USSR(Ukrainian SSR) |
Lyuber,A.A. et al. Classification and stratigraphic value of spores of some Carboniferous Coal deposits in the USSR. |
1938 |
| original |
Westphalian B |
|
W.Germany(N.Rhine) |
Loose,F. Spores of the Bismarck Seam, Ruhr area. |
1934 |
| original |
Westphalian B |
|
W.Germany(N.Rhine) |
Loose,F. Spores of the Bismarck Seam, Ruhr area. |
1934 |
| original |
Westphalian B |
|
W.Germany(N.Rhine) |
Loose,F. Spores of the Bismarck Seam, Ruhr area. |
1934 |
| details |
Westphalian C |
|
Germany(Rhineland) |
Ibrahim,A.C. Spore forms of the Agir horizon of the Ruhr Basin. |
1933 |