| original |
Wealden |
|
Netherlands |
Dijkstra,S.J. Wealden megaspores and their stratigraphical value. |
1951 |
| details |
Wealden |
|
Netherlands |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 1 |
1956 |
| details |
Berriasian |
|
England |
Hughes,N.F. Paleontological evidence for the age of the English Wealden. |
1958 |
| details |
Kazanian |
|
India(Bihar) |
Kar,R.K. Palynology of the Barren Measures sequence from Jharia Coalfield, Bihar, India. 3. Studies on the megaspores. |
1968 |
| details |
Nd |
|
Nd |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |