| details |
Early Cambrian |
|
Sweden |
Vidal,G. et al. Vendian-Lower Cambrian acritarch biostratigraphy of Central Caldeonian Fold Belt Scandinavia and the palaeography of Iapetu Tornquist Seaway |
1996 |
| details |
Early Cambrian |
|
Sweden |
Moczydlowska,M. et al. Biochronology of the autochthonous Lower Cambrian in the Laisvall-Storuman Area, Swedish Caledonides. |
2001 |
| details |
Middle Cambrian |
|
Canada(Quebec) |
Lavoie,D. et al. Stratigraphic framework for the Cambrian-Ordovician rift and passive margin successions from southern Quebec to western Newfoundland. |
2003 |