| original |
Valanginian |
Early Hauterivian |
England(Yorkshire) |
Duxbury,S. A palynostratigraphy of the Berriasian to Barremian of the Speeton Clay of Speeton, England. |
1977 |
| details |
Nd |
|
Nd |
Lentin,J.K. et al. Fossil dinoflagellates: Index to genera and species, 1981 edition. |
1981 |
| details |
Nd |
|
Nd |
Stover,L.E. et al. Analyses of Mesozoic and Cenozoic organic-walled dinoflagellates 1977-1985 |
1987 |
| details |
Nd |
|
Nd |
Fensome,R.A. et al. The Eisenack Catalog of Fossil Dinoflagellates. New Series. Volume 1. |
1991 |
| details |
Nd |
|
Nd |
Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. |
1998 |