| original |
Desmoinesian |
|
Illinois |
Schopf,J.M. Spores from the Herrin (No. 6) Coal Bed in Illinois. |
1938 |
| details |
Desmoinesian |
|
Illinois |
Schopf,J.M. et al. An annotated synopsis of Paleozoic fossil spores and the definition of generic groups. |
1944 |
| details |
Late Allegheny |
|
West Virginia |
Cross,A.T. Spore floras of the Pennsylvanian of West Virginia and Kentucky |
1947 |
| details |
Late Allegheny |
|
Kentucky |
Cross,A.T. Spore floras of the Pennsylvanian of West Virginia and Kentucky |
1947 |
| details |
Westphalian B |
Westphalian C |
Czechoslovakia |
KalibovЎ,M. Megaspores of the Radnice Coal Measure zone of the Kladno-Rakovnik Coal Basin. |
1951 |
| details |
Early Gondwana |
|
India(Bihar) |
Surange,K.R. et al. Megaspores from the West Bokaro Coalfield. |
1953 |
| details |
Nd |
|
Nd |
Hoeg,O.A. et al. On double walls in fossil megaspores |
1955 |
| details |
Moscovian |
|
USSR(Ukrainian SSR) |
Ishchenko,A.M. et al. Megaspores of the Carboniferous age and their stratigraphic importance |
1962 |
| details |
Late Artinskian |
|
India(Bihar) |
Bharadwaj,D.C. et al. Lower Gondwana megaspores-A monograph |
1970 |
| details |
Permian |
|
India(Bihar) |
Lakhanpal,R.N. et al. A catalogue of Indian fossil plants |
1976 |
| details |
Westphalian C |
Westphalian D |
Pennsylvania |
Braman,D.R. et al. The stratigraphic and geographic distribution of Carboniferous megaspores. |
1980 |
| details |
Westphalian C |
Westphalian D |
Illinois |
Braman,D.R. et al. The stratigraphic and geographic distribution of Carboniferous megaspores. |
1980 |
| details |
Nd |
|
Nd |
Tewari,R. et al. Megaspores from Early Permian of India. |
1992 |