| original |
Berriasian |
|
England(Yorkshire) |
Black.M. Coccoliths of the Speeton Clay and Sutterby Marl. |
1971 |
| original |
Early Valanginian |
|
England(Yorkshire) |
Duxbury,S. A palynostratigraphy of the Berriasian to Barremian of the Speeton Clay of Speeton, England. |
1977 |
| details |
Nd |
|
Nd |
Norris,G. Phylogeny and a revised Supre-Generic classification for Triassic-Quaternary organic-walled dinoflagellte cysts (Pyrrhophyta); Part 2. Families and Suborders of fossil dinoflagellates. |
1978 |
| details |
Early Valanginian |
|
England(Yorkshire) |
Duxbury,S. On Lagenorhytis Duxbury nom.nov. |
1979 |
| details |
Early Valanginian |
|
England(Yorkshire) |
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 |