| details |
Middle Oligocene |
|
China(Shantung) |
He,C.-Q. et al. Early Tertiary microphytoplankton from the Dongpu Region |
1989 |
| details |
Middle Oligocene |
|
China(Honan) |
He,C.-Q. et al. Early Tertiary microphytoplankton from the Dongpu Region |
1989 |
| details |
Early Oligocene |
Middle Oligocene |
China(Hopei) |
Xu,J. et al. On the Paleogene microphytoplankton from the Shengli oil-bearing region, Shandong, China |
1997 |
| details |
Oligocene |
|
China(Shandong) |
Xu,J. et al. On the Paleogene microphytoplankton from the Shengli oil-bearing region, Shandong, China |
1997 |