| 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 |
| 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 |
| details |
Cenomanian |
|
North Dakota |
Collinson,M.E. et al. Sporopollenin exhibiting colloidal organization in spore walls. |
1993 |
| details |
Cenomanian |
|
South Dakota |
Collinson,M.E. et al. Sporopollenin exhibiting colloidal organization in spore walls. |
1993 |
| details |
Early Maestrichtian |
|
Mongolian Republic |
Krassilov,V.A. et al. Isoetalean megasporophylls with megaspores from the Upper Cretaceous of Mongolia. |
1996 |
| details |
Cenomanian |
|
Sweden |
Kedves,M. Tranmission Electron Microscopy of the Fossil Spores. |
1996 |