| original |
Late Barremian |
Early Aptian |
E.Germany |
Alberti,G. Towards the knowledge of Mesozoic and Early Tertiary dinoflagellates and Hystrichospheres from North and Central Germany, as well as some other European localities. |
1961 |
| original |
Albian |
|
Canada(Alberta) |
Brideaux,W.W. Palynology of the Lower Colorado Group (Late Lower Cretaceous) and its lithological equivalents in central and west-central Alberta, Canada. |
1968 |
| original |
Middle Barremian |
Late Barremian |
England(Yorkshire) |
Duxbury,S. Barremian phytoplankton from Speeton, East Yorkshire. |
1980 |