| original |
Middle Gothlandian |
Late Gothlandian |
Spain |
Cramer,F.H. et al. Taxonomic considerations on the acritarchs of the Middle and Upper Silurian of northern Spain. |
1968 |
| details |
Late Frasnian |
Early Famennian |
France(Boulonnais) |
Loboziak,S. et al. Miospores and acritarchs of the Hydrequent Formation (Upper Frasnian to Lower Famennian, Boulonnais, France). |
1983 |
| details |
Nd |
|
China(E.China) |
Wang,K. et al. Palynological assemblages of crude oil from the oil fields in East China and the research of the oil source. |
1986 |
| details |
Sinemurian |
Toarcian |
Denmark |
Dybkjaer,K. Palynological zonation and stratigraphy of the Jurassic section in the Gassum No.1 |
1988 |