original |
Rhaetian |
Liassic |
Sweden |
Nilsson,T. On the occurrence of a Mesozoic oil shale in Schonen. |
1958 |
original |
Hettangian |
Early Toarcian |
Canada(Arctic) |
Suneby,L.B. et al. Palynological zonation of the Heiberg Formation (Triassic-Jurassic) eastern Sverdrup Basin, Arctic Canada. |
1988 |
original |
Late Rhaetian |
Early Toarcian |
Canada(Arctic) |
Suneby,L.B. et al. Palynological zonation of the Heiberg Formation (Triassic-Jurassic) eastern Sverdrup Basin, Arctic Canada. |
1988 |
original |
Hettangian |
|
Sweden |
Guy-Ohlson,D. The use of dispersed palynomorphs referable to the form genus Chasmatosporites (Nilsson) Pocock and Jansonius, in Jurassic biostratigraphy. |
1988 |
original |
Early Hettangian |
Middle Hettangian |
France(Paris Basin) |
Yang,Z. et al. Hettangian and Sinemurian magnetostratigraphy from Paris Basin |
1996 |