| details |
Carboniferous |
|
USSR(Kazakh SSR) |
Oshurkova,M.V. On the occurrence of spore-bearing Lepidodendrons in the Rock-Coal deposits of Karaganda |
1964 |
| details |
Late Carboniferous |
|
Poland |
Potonie,R. Synopsis of the Sporae in situ. |
1962 |
| details |
Carboniferous |
|
Poland |
Zerndt,J. Megaspores of the Polish Coal Basin. Part 2. the Marginal Group. |
1937 |
| details |
Nd |
|
Nd |
Potonie,R. The phylogeny of the spore shape in regard to families of fossil plants (except the angiosperms). |
1961 |
| details |
Paleozoic |
|
Nd |
Potonie,R. The spores of Palaeozoic plants in the natural (Morphologic) system |
1954 |
| details |
Westphalian D |
|
Czechoslovakia |
Zerndt,J. Megaspores from the Westphalian and Stephanian in Bohemia. |
1937 |