| details |
Wealden |
|
Netherlands |
M¤dler,K.A. Azolla of the Quaternary and Tertiary and its significance for the taxonomy of older spores |
1954 |
| details |
Wealden |
|
Netherlands |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 1 |
1956 |
| details |
Wealden |
|
Netherlands |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 1 |
1956 |
| details |
Valanginian |
|
England |
Hughes,N.F. Paleontological evidence for the age of the English Wealden. |
1958 |
| details |
Valanginian |
|
Germany |
Hughes,N.F. Paleontological evidence for the age of the English Wealden. |
1958 |
| details |
Nd |
|
England |
Hughes,N.F. Paleontological evidence for the age of the English Wealden. |
1958 |
| details |
Nd |
|
Germany |
Hughes,N.F. Paleontological evidence for the age of the English Wealden. |
1958 |
| details |
Nd |
|
Nd |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |