| details |
Early Triassic |
|
USSR(Kazakh SSR) |
Medvedeva,A.M. et al. Direct evidence for vertical oil migration in the eastern Precaspian. |
1993 |
| details |
Middle Eocene |
|
W.Germany(Hesse) |
Krutzsch,W. Micropaleontologic (spore paleontology), investigation of the Brown Coal of the Geiseltal. |
1959 |
| details |
Senonian |
|
USSR(Kazakh SSR) |
Pokrovskaya,I.M. Upper Cretaceous spore-pollen complexes of the Basin of the Emb River. (In: Atlas of Upper Cretaceous, Paleocene and Eocene spore pollen complexes of various Regions of the USSR) |
1960 |
| details |
Aptian |
|
USSR(Kazakh SSR) |
Xu,Y. et al. Spores and pollen (Jurassic). (In: Mesozoic Stratigraphy and Palaeontology of the Shan-Gan-Ning Basin.) |
1980 |