| details |
Eocene |
|
Europe |
Krutzsch,W. The stratigraphic classification of spores from the Lower Tertiary in northern Central Europe, (Paleocene to Middle Oligoene). Fundamental Methods and present status of investiations. |
1965 |
| details |
Early Eocene |
|
E.Germany |
Krutzsch,W. Eocene spore stratigraphy: Table 2. (Stratigraphic classification of spores from Upper Tertiary in North Central Europe.) |
1966 |
| details |
Eocene |
|
Europe |
Krutzsch,W. The stratigraphicly useful spore and pollen forms of the Middle European Lower Tertiary |
1967 |