| details |
Nd |
|
Nd |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |
| details |
Dogger |
|
England(Rutland) |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 1 |
1956 |
| details |
Jurassic |
|
England |
Just,T. Mesozoic plant microfossils and their geological significance. |
1951 |
| details |
Nd |
|
Nd |
Schopf,J.M. et al. An annotated synopsis of Paleozoic fossil spores and the definition of generic groups. |
1944 |
| original |
Bathonian |
|
England(Rutland) |
Murray,N. The microflora of the Upper and Lower Estuarine Series of the East Midlands. |
1939 |