| original |
Late Hauterivian |
|
England(Yorkshire) |
Keupp,H. Calcareous dinoflagellate cysts of the Boreal Lower Cretaceous, (Lower Hauterivian to Lower Albian). |
1981 |
| original |
Late Barremian |
|
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. Calcareous dinoflagellates from Late Callovian to Oxfordian of France, (Normandy). |
1989 |
| details |
Middle Albian |
|
England(Kent) |
Keupp,H. et al. Problems with the systematics of calcareous dinoflagellate cysts based on morphologically defined taxa. |
1991 |
| details |
Nd |
|
Nd |
Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. |
1998 |