| original |
Wealden |
|
Netherlands |
Dijkstra,S.J. Wealden megaspores and their stratigraphical value. |
1951 |
| details |
Wealden |
|
England(Isle of Wight) |
Hughes,N.F. Wealden plant microfossils. |
1955 |
| details |
Wealden |
|
Netherlands |
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 |
Hauterivian |
|
Poland |
Waksmundzka,M. Lower Cretaceous megaspores from northern Poland. |
1982 |
| details |
Nd |
|
Nd |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |