| original |
Early Aptian |
|
USSR(Kazakh SSR) |
Fedorova,V.A. The role of organic microphyloplancton in correlating separate sections (On first studies of Apt deposits of northern Pre-Caspian). (In: Mikrofitofossilii v neftyanoi geologii. N. A. Timoshina, editor) |
1980 |
| original |
Middle Barremian |
Late Barremian |
Germany(Bavaria) |
Kirsch,K.-H. Dinoflagellate cysts from the Early Cretaceous, (Barremian), Helvetic Zone of the Waxenstein Graben, Upper Bavaria. |
1993 |
| original |
Early Oligocene |
|
Atlantic(Greenland Sea) |
Firth,J.V. Upper Middle Eocene to Oligocene dinoflagellate biostratigraphy and assemblage variations in Hole 913B, Greenland Sea |
1996 |
| details |
Late Barremian |
|
Canada(Arctic) |
Nиhr-Hansen,H. et al. Upper Barremian to Upper Albian (Lower Cretaceous) dinoflagella cyst assemblages, Canadian Arctic Archipelago |
1998 |