| details |
Givetian |
|
USSR(Kazakh SSR) |
Senkevitsch,M.A. et al. On fructifications, morphology and anatomy of Givetian Lepidophytes in Kazakhstan (USSR). |
1993 |
| details |
Late Cretaceous |
|
Germany |
Balme,B.E. Fossil in situ, spores and pollen grains: An annotated catalogue. |
1995 |
| details |
Westphalian B |
|
England |
Scott,A.C. et al. Paleozoic spores and pollen. Chapter 18G Palaeozoic megaspores. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |
| details |
Westphalian D |
|
USA |
Kedves,M. Tranmission Electron Microscopy of the Fossil Spores. |
1996 |