| details |
Early Carboniferous |
Middle Carboniferous |
USSR(Ukrainian SSR) |
Ishchenko,A.M. et al. Megaspores in the Lower and Middle Carboniferous of the Donets Basin. (In: Geology and Coal Formation and stratigraphy of the Carboniferous of the USSR) |
1964 |
| details |
Early Carboniferous |
|
South Africa |
Potonie,R. Synopsis of the genera of the sporae dispersae.Part 7 |
1975 |
| details |
Desmoinesian |
|
Illinois |
Schopf,J.M. Spores from the Herrin (No. 6) Coal Bed in Illinois. |
1938 |
| details |
Desmoinesian |
|
Illinois |
Schopf,J.M. Spores characteristic of Illinois Coal No. 6. |
1935 |
| details |
Cenomanian |
|
Russia(Siberia) |
Krassilov,V.A. et al. A new Heterosporous plant from the Cretaceous of West Siberia. |
1999 |
| details |
Cenomanian |
|
Russia(Siberia) |
Krassilov,V.A. et al. A new Heterosporous plant from the Cretaceous of West Siberia. |
1999 |
| details |
Carboniferous |
|
Nd |
Guennel,G.K. Systematic methods for Paleozoic plant microfossils. |
1956 |
| details |
Carboniferous |
|
Scotland |
Oshurkova,M.V. The classification of Carboniferous megaspores. (Taxonomy and Methods for the Study of Fossl Pollen and Spores. V.N. Saks and A.F. Khlonova, editors) |
1964 |
| details |
Carboniferous |
|
Europe |
Oshurkova,M.V. The classification of Carboniferous megaspores. (Taxonomy and Methods for the Study of Fossl Pollen and Spores. V.N. Saks and A.F. Khlonova, editors) |
1964 |
| details |
Carboniferous |
|
North America |
Oshurkova,M.V. The classification of Carboniferous megaspores. (Taxonomy and Methods for the Study of Fossl Pollen and Spores. V.N. Saks and A.F. Khlonova, editors) |
1964 |