| original |
Early Jurassic |
|
USSR(Siberia) |
Bolkhovitina,N.A. Atlas of spores and pollen from Jurassic and Lower Cretaceous deposits of the Vilyuysk Basin. |
1956 |
| details |
Toarcian |
|
USSR(Ukrainian SSR) |
Semenova,E.V. Spore and pollen assemblages of deposits of the Jurassic and Triassic Boundary of the Don Basin. |
1970 |
| details |
Early Jurassic |
|
USSR(Siberia) |
Semenova,E.V. Spore and pollen assemblages of deposits of the Jurassic and Triassic Boundary of the Don Basin. |
1970 |
| details |
Rhaetian |
Liassic |
USSR(Siberia) |
Bogdashova,L.I. et al. Correlation of size of mega-microspores, Ginkgo and Conifer pollen as dependent on conditions of accumulation of fluvial and swamp facies in the Lias. (In: Material on the Biostratigraphy and Paleogeography of Eastern Siberia) |
1975 |