| details |
Late Hauterivian |
Middle Barremian |
W.Germany(Niedersachsen) |
Keupp,H. Calcigonellum Deflandre 1948 and Echinodinella n. gen. (calcareous dinoflagellate cysts) from the Lower Cretaceous of northwest Germany. |
1980 |
| details |
Hauterivian |
Middle Barremian |
W.Germany(Niedersachsen) |
Keupp,H. Calcareous dinoflagellate cysts of the Boreal Lower Cretaceous, (Lower Hauterivian to Lower Albian). |
1981 |
| details |
Late Hauterivian |
Early Barremian |
England(Yorkshire) |
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 |
Nd |
|
Nd |
Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. |
1998 |