| details |
Tithonian |
Turonian |
India(Andhra Pradesh) |
Prasad,B. et al. A standard palynozonation scheme for the Cretaceous and Pre-Cretaceous subsurface sediments of Krishna-Godavari Basin, India. |
1995 |
| details |
Ryazanian |
Valanginian |
Norway |
Thusu,B. Aptian to Toarcian dinoflagellate cysts from Arctic Norway. (In: Distribution of Biostratigraphically diagnostic dinoflagellate cysts and miospores from the Northwest European continental shelf and adjacent areas. B.Thusu, editor) |
1978 |
| details |
Kimmeridgian |
Valanginian |
Canada(NWT,Franklin) |
Davies,E.H. The dinoflagellate Oppel-zonation of the Jurassic-Lower Cretaceous sequences in the Sverdrup Basin, Arctic Canada. |
1983 |
| details |
Tithonian |
Valanginian |
India(Andhra Pradesh) |
Prasad,B. Palynological characterisation, biostratigraphy and depositional environment of Pre-Tertiary lithounits of Krishna-Godavari Basin, India. |
1999 |