| details |
Dogger |
|
Denmark |
Kempf,E.K. Electron microscopy of Mesozoic megaspores from Denmark. |
1971 |
| details |
Early Cretaceous |
Aptian |
Canada(NWT) |
Sweet,A.R. Jurassic and Cretaceous megaspores. |
1979 |
| details |
Late Jurassic |
Early Cretaceous |
Canada(Alberta) |
Sweet,A.R. Jurassic and Cretaceous megaspores. |
1979 |
| details |
Hettangian |
Toarcian |
Poland |
Rogalska,M. et al. Lower Jurassic microflora. (In: Atlas Skamienialosci Przewodnich i Charakterystycznych. L.Malinowska, W.Bielecka and M.Rogalska, editors.Warsaw) |
1980 |
| details |
Nd |
|
Nd |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |
| details |
Mesozoic |
|
Nd |
Kovach,W.L. A review of Mesozoic megaspore-ultrastructure. (In: Ultrastructure of Fossil Spores and Pollen. M.H.Kurmann and J.A.Doyle, editors) |
1994 |