| details |
Volgian |
Aptian |
USSR(WSL) |
Rovnina,L.V. et al. Lower Cretaceous deposits. (In: Complex examination of the Jurassic and Lower Cretaceous stratigraphy of Western Siberia. L.A.Rovnina, editor) |
1978 |
| details |
Valanginian |
Aptian |
USSR(Krasnoyarsk Kray) |
Tsykin,R.S. et al. Continental Mesozoic and Cenozoic in the northern part of the Yenisey Ridge |
1987 |
| details |
Valanginian |
Hauterivian |
Bulgaria |
Ercegovac,M. et al. Microfloral residues from the Lower Cretaceous of the Stara Planina Montains, Bulgaria. |
1972 |
| details |
Late Aptian |
|
Spain |
Boulouard,C. et al. New data on the Upper Aptian and Albian in the Lower Aragon and Meastrazgo, (Spain). |
1970 |
| details |
Early Albian |
Middle Albian |
Canada(Alberta) |
Vagvolgyi,A.B. et al. Microflora of the Lower Cretaceous McMurray Formation, Northeast Alberta. |
1969 |
| details |
Barremian |
Aptian |
China(Hopei) |
Miao,S.-J. Early Cretaceous spores and pollen grains and their stratigraphical significance in Hebei Province. |
1981 |
| details |
Aptian |
Albian |
China(Inner Mongolia) |
Guo,Z. Sporopollen study of the Cretaceous Zhaganlimen Nuoer Formation in the Abagaqi of Xilinguolemen, Inner Mongolia, China |
1982 |
| details |
Albian |
Cenomanian |
Yugoslavia |
Ercegovac,M.D. Organic matter and degree of its thermal change in Mokranja Flysch, (Timocka Krajina). |
1981 |
| details |
Albian |
|
Portugal |
Rey,J. et al. The Early Cretaceous from the Province of Algarve, East Portugal. |
1974 |