| details |
Late Eocene |
Middle Oligocene |
China(Shantung) |
Sung,T.C. et al. Tertiary sporo-pollen complexes of Shantung |
1964 |
| details |
Middle Eocene |
Late Oligocene |
China(Hopei) |
Sung,T.C. et al. Early Tertiary spores and pollen grains from the Coastal Region of Bohai. |
1978 |
| details |
Middle Eocene |
Late Oligocene |
China(Hopei) |
Sung,T.C. et al. Early Tertiary spores and pollen grains from the Coastal Region of Bohai. |
1978 |
| details |
Oligocene |
|
China(Liaoning) |
Ke et al. Early Tertiary spores and pollen grains from the Coastal Region of Bohai |
1978 |