| details |
Cenomanian |
Santonian |
England(Isle of Wight) |
Clarke,R.F.A. et al. An investigation of microplankton assemblages from the chalk of the Isle of Wight, England. |
1967 |
| details |
Cenomanian |
|
England(Surrey) |
Davey,R.J. et al. The genera Hystrichosphaera and Achomosphaera. (In: Studies on Mesozoic and Cainozoic Dinoflagellate Cysts. R.J.Davey, C.Downie, W.A.S.Sarjeant and G.L.Williams) |
1966 |
| details |
Campanian |
|
Poland |
GŠ³rka,H. Coccolithophorids, dinoflagellates, hystrichosphaerids and incertae sedis microfossils of the Upper Cretaceous of Poland. |
1963 |