| original |
Early Oligocene |
Middle Oligocene |
China(Hopei) |
Jiabo On the Paleogene dinoflagellates and acritarchs from the Coastal Region of Bohai. |
1978 |
| details |
Eocene |
Oligocene |
China(Shantung) |
He,C.-Q. et al. Early Tertiary microphytoplankton from the Dongpu Region |
1989 |
| details |
Eocene |
Oligocene |
China(Honan) |
He,C.-Q. et al. Early Tertiary microphytoplankton from the Dongpu Region |
1989 |
| details |
Early Oligocene |
Middle Oligocene |
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Middle Eocene |
Oligocene |
China(Hunan) |
Mao,G. et al. Early Tertiary terrigenous dinoflagellates and other planktonic algae from Central and Southern Henan Province. (In: Early Tertia terrigenous Dinflagellates and other planktonic algae from Hena Province and their significance in oil and Gas prospecting -S.et al) |
1995 |