| original |
Wealden |
|
Netherlands |
Dijkstra,S.J. Wealden megaspores and their stratigraphical value. |
1951 |
| details |
Wealden |
|
Netherlands |
M¤dler,K.A. Azolla of the Quaternary and Tertiary and its significance for the taxonomy of older spores |
1954 |
| details |
Nd |
|
Nd |
M¤dler,K.A. Azolla of the Quaternary and Tertiary and its significance for the taxonomy of older spores |
1954 |
| details |
Nd |
|
Nd |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 1 |
1956 |
| details |
Wealden |
|
Netherlands |
Dijkstra,S.J. On megaspores, Charophyta Fruits and some other small fossils from the Cretaceous. |
1961 |
| details |
Nd |
|
Nd |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |