| details |
Eocene |
|
England(Berkshire) |
Eisenack,A. et al. Katalog der Fossilen Dinoflagellaten, Hystrichosph¤ren und Verwandten Mikrofossilien. Band I. Dinoflagellaten. 2.Erg¤nzungslieferung.III + 215p |
1971 |
| details |
Cenomanian |
|
England |
Clarke,R.F.A. et al. A note on the nomenclature of some Upper Cretaceous and Eocene dinoflagellate taxa. |
1968 |
| details |
Early Eocene |
|
Nd |
Sarjeant,W.A.S. The stratigraphical distribution of fossil dinoflagellates. |
1967 |
| original |
Ypresian |
|
England(Berkshire) |
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 |