| details |
Valanginian |
Santonian |
Australia |
Dettmann,M.E. Cretaceous vegetation: The microfossil record. |
1994 |
| details |
Volgian |
Valanginian |
USSR(Irkutskaya Oblast) |
Fedorova,V.A. et al. Palynostratigraphy of the boundary deposits of the Jurassic and Cretaceous at Oka River. (In: Pogranichnye Varusy Yurskoi i Melovoi Sistem) |
1984 |
| details |
Volgian |
Ryazanian |
Russian Platform |
Riding,J.B. et al. Jurassic and Lowermost Cretaceous dinoflagellate cyst biostratigraphy of the Russian Platform and Northern Siberia, Russia. |
1999 |