| original |
Late Aptian |
|
W.Germany(Niedersachsen) |
Keupp,H. Calcareous dinoflagellate cysts of the Boreal Lower Cretaceous, (Lower Hauterivian to Lower Albian). |
1981 |
| details |
Hauterivian |
|
W.Germany(Niedersachsen) |
Keupp,H. Calcareous dinoflagellate cysts of the Boreal Lower Cretaceous, (Lower Hauterivian to Lower Albian). |
1981 |
| details |
Nd |
|
Nd |
Keupp,H. et al. New systematic concepts for calcareous dinoflagellate cysts of the Subfamily Orthopithonelloidae Keupp 1987. |
1989 |
| details |
Early Aptian |
|
Germany(Niedersachsen) |
Keupp,H. et al. Calcareous phytoplankton from the Barremian/Aptian boundary interval in northwest Germany. |
1994 |
| details |
Middle Aptian |
|
W.Germany(Niedersachsen) |
Keupp,H. Vertical distribution of calcareous dinoflagellate cysts of the Middle Aptian core section of the Hoheneggelsen Kb3 borehole, Lower Saxony, Germany |
1995 |
| details |
Middle Aptian |
|
W.Germany(Niedersachsen) |
Keupp,H. Vertical distribution of calcareous dinoflagellate cysts of the Middle Aptian core section of the Hoheneggelsen Kb3 borehole, Lower Saxony, Germany |
1995 |
| details |
Nd |
|
Nd |
Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. |
1998 |