| details |
Late Albian |
Early Cenomanian |
Atlantic Ocean |
Kotova,I.Z. Palynological study of the Lower Cretaceous deposits of the central part of the Atlantic Ocean |
1986 |
| details |
Barremian |
Early Cenomanian |
Maryland |
Doyle,J.A. Palynostratigraphic zonation. (In: New data bearing on the structural significance of the Upper Chesapeake Bay magnetic anomaly. J.Edwards and H.J. Hansen) |
1979 |
| details |
Albian |
|
Portugal |
Chapman,J.L. Practical difficulties in the application of the species concept in Albian angiosperm pollen. (In: Studies in Palaeobotany and Palynology in Honor of N.F.Hughes. D.J.Batten and D.E.G.Briggs, editors) |
1986 |
| details |
Barremian |
Aptian |
USA(Atlantic Coast.Pl.) |
Pedersen,K.R. et al. Fruits from the Mid-Cretaceous of North America with pollen grains of the Clavatipollenites type. |
1991 |