| details |
Bathonian |
Callovian |
USSR(Uzbek SSR) |
Barash,B.I. et al. Stratigraphy of Jurassic deposits of Pitnyak Region |
1970 |
| details |
Barremian |
Aptian |
USSR(Pre-Caucasus) |
Fokina,N.I. et al. The significance of quantitative indices for the age determination of species, (eg. Lower Cretaceous spore and pollen assemblages from the eastern Pre-Caucasus). (In: Methods of Interpretation of Palynological Data. E.P.Boitsova, editor) |
1977 |
| details |
Bajocian |
Bathonian |
USSR(Arkhangelsk Oblast) |
Maslov,V.M. et al. Middle Jurassic deposits of the Vychegda, Luza and Mezen River Basins. |
1973 |