| details |
Westphalian A |
|
Spain |
Lachkar,G. Megaspore assemblages in the Coal Seams of the "La Camocha" Mine (Province of Oviedo, Spain) |
1976 |
| details |
Carboniferous |
Permian |
Gondwanaland |
Pi©rart,P. Some remarks concerning the megaspores of Gondwana. |
1978 |
| details |
Namurian A |
|
Poland |
Knafel,S. et al. Zones of megaspore changes in Namurian a of the north eastern part of the Upper Silesian Coal Basin. (In: Geological Research in the Silesian-Cracovian Region.) |
1979 |
| details |
Namurian |
Stephanian B |
Pennsylvania |
Braman,D.R. et al. The stratigraphic and geographic distribution of Carboniferous megaspores. |
1980 |
| details |
Namurian |
Stephanian B |
Michigan |
Braman,D.R. et al. The stratigraphic and geographic distribution of Carboniferous megaspores. |
1980 |
| details |
Namurian |
Stephanian B |
Pennsylvania |
Braman,D.R. et al. The stratigraphic and geographic distribution of Carboniferous megaspores. |
1980 |
| details |
Namurian |
Stephanian B |
Illinois |
Braman,D.R. et al. The stratigraphic and geographic distribution of Carboniferous megaspores. |
1980 |
| details |
Carboniferous |
|
Czechoslovakia |
KalibovЎ-KaiserovЎ,M. Megaspores and miospores of the Carboniferous relics in the Plzen area. |
1982 |
| details |
Pennsylvanian |
|
USA(Mid-Continent) |
Taylor,W.A. Comparative analysis of megaspore ultrastructure in Pennsylvanian Lycophytes |
1990 |
| details |
Carboniferous |
|
Nd |
Chaloner,W.G. et al. Heterospory: Cul-de-Sac or pathway to the seed? (In: Pollen and Spores, Patterns of Diversification. S.Blackmore and S.H.Barnes, editors) |
1991 |
| details |
Pennsylvanian |
|
USA(Mid-Continent) |
Kedves,M. Tranmission Electron Microscopy of the Fossil Spores. |
1996 |