| details |
Early Miocene |
|
Poland |
Mackв,S. Lower Miocene pollen flora from the valley of Keodnicka near Gliwice (Upper Silesia). |
1957 |
| details |
Early Eocene |
|
England |
Mackв,S. Sporomorphs in the London Clay. |
1961 |
| details |
Early Tertiary |
|
England |
Mackв,S. Sporomorphs from Upper Cretaceous near Opole, (Silasia), and from the London Clays. |
1963 |
| details |
Nd |
|
Nd |
Kedves,M. Tranmission Electron Microscopy of the Fossil Spores. |
1996 |
| details |
Cenomanian |
|
Nd |
Pryer,K.M. Phylogeny of Marsileaceous ferns and relationships of the fossil Hydropteris pinnata reconsidered. |
1999 |