| details |
Late Visean |
|
Alaska |
Ravn,R.L. Miospores of the Kekiktuk Formation (Lower Carboniferous), Endicott Field Area, Alaska North Slope. |
1991 |
| details |
Middle Visean |
Late Visean |
Canada(Arctic) |
Ravn,R.L. Miospores of the Kekiktuk Formation (Lower Carboniferous), Endicott Field Area, Alaska North Slope. |
1991 |
| details |
Asbian |
Early Brigantian |
England(Shropshire) |
Turner,N. et al. A palynological study of the Lower Carboniferous Lydebrook Sandstone and adjacent Late Wenlock and Langsettian Strata, Shropshire, England. |
1995 |