| details |
Late Berriasian |
Coniacian |
Nd |
Sarjeant,W.A.S. The stratigraphical distribution of fossil dinoflagellates. |
1967 |
| details |
Early Cretaceous |
|
Germany |
Davey,R.J. et al. The genus Hystrichosphaeridium and its allies. (In: Studies on Mesozoic and Cainozoic Dinoflagellate Cysts. R.J.Davey, C.Downie, W.A.S.Sarjeant and G.L.Williams) |
1966 |
| details |
Nd |
|
Nd |
Downie,C. et al. Bibliography and index of fossil dinoflagellates and acritarchs. |
1965 |
| details |
Early Cretaceous |
|
W.Germany |
Eisenack,A. Cordosphaeridium n.g., ex Hystrichosphaeridium, Hystrichosphaeridea |
1963 |
| details |
Late Aptian |
|
W.Germany(Schleswig) |
Eisenack,A. Cordosphaeridium n.g., ex Hystrichosphaeridium, Hystrichosphaeridea |
1963 |