| details |
Early Paleocene |
Early Eocene |
E.Germany(Potsdam) |
Krutzsch,W. Contribution to the spore-paleontology of the Pre-Upper Oligocene-Oligocene Continental and marine Tertiary sediments of Branden. |
1961 |
| details |
Nd |
|
Nd |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 3 |
1960 |
| details |
Early Paleocene |
|
USSR(Kazakh SSR) |
Zaklinskaya,E.D. On the problem of the Paleogene flora of Karatau |
1960 |
| original |
Early Eocene |
|
Germany |
Pflug,H.D. Origin and development of the angiosperm pollen in earth history |
1953 |