| 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 |
Early Jurassic |
|
USSR(Yakut ASSR) |
Bolkhovitina,N.A. Spore-pollen complexes from the Mesozoic deposits of the Vilyuy Basin and their importance for stratigraphy. |
1959 |
| details |
Ladinian |
|
USSR(Urals) |
Tuzhikova,V.I. Lithology and stratigraphy of the Lower Mesozoic deposits of the Urals. (In: The history of the Lower Mesozoic accumulation of Coals in the Urals) |
1973 |
| 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 |