| details |
Hettangian |
|
Sweden |
Guy-Ohlson,D. The use of dispersed palynomorphs referable to the form genus Chasmatosporites (Nilsson) Pocock and Jansonius, in Jurassic biostratigraphy. |
1988 |
| details |
Rhaetian |
Liassic |
Sweden |
Boersma,M. et al. Triassic palynomorphs, index to genera and species |
1987 |
| details |
Sinemurian |
|
Sweden |
Guy-Ohlson,D. et al. Lower Jurassic biostratigraphy of the Oppegard Bore No.1, northwest Scania, Sweden. |
1984 |
| original |
Rhaetian |
Liassic |
Sweden |
Nilsson,T. On the occurrence of a Mesozoic oil shale in Schonen. |
1958 |