| original |
Late Liassic |
Early Dogger |
France(Pas-de-Calais) |
Danze,J. et al. Palynological study of a Clay found at the Lias-Dogger Boundry in a drilling at Boulogne-sur-Mer. |
1963 |
| details |
Liassic |
|
France(Pas-de-Calais) |
Candilier,A.M. et al. Palynological study of the Lias in the Boulonnais (Northern France). |
1982 |
| details |
Toarcian |
Early Bajocian |
Worldwide |
Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. |
1989 |
| details |
Toarcian |
|
France |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |