| details |
Early Lutetian |
|
England(Hampshire) |
Stover,L.E. et al. A revision of the Paleogene dinoflagellate genera Areosphaeridium Eaton 1971 and Eatonicysta Stover Abd Evitt 1978 |
1995 |
| details |
Nd |
|
Nd |
Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. |
1998 |
| details |
Early Eocene |
Middle Eocene |
Nd |
Eaton,G.L. et al. Re-evaluation of the status of the dinoflagellate cyst genus Cleistophaeridium. |
2001 |
| details |
Middle Eocene |
|
England(Hampshire) |
Eaton,G.L. et al. Re-evaluation of the status of the dinoflagellate cyst genus Cleistophaeridium. |
2001 |