| original |
Frasnian |
|
Canada(Arctic) |
Chi,B.I. et al. Biostratigraphy and taxonomy of Devonian Imegaspores, Arctic, Canada. |
1976 |
| details |
Early Frasnian |
Middle Frasnian |
Canada(Arctic) |
Mayr,U. Stratigraphy and correlation of Lower Paleozoic Formations, subsurface of Bathurst Island and adjacent smaller islands, Canadian Arctic Archipelago. |
1980 |
| details |
Strunian |
|
S.Ireland(Wexford) |
Higgs,K.T. et al. Megaspores from the Uppermost Devonian, (Strunian), of Hook Head, County Wexford, Ireland. |
1982 |
| details |
Famennian |
|
Canada(NWT,Mackenzie) |
Hills,L.V. et al. Megaspores, Imperial Formation (Upper Devonian) Mountain River, District of MacKenzie |
1984 |
| original |
Early Frasnian |
|
Australia |
McGregor,D.C. et al. Canadian and Australian Devonian spores: zonation and correlation |
1992 |
| original |
Late Givetian |
|
Canada |
McGregor,D.C. et al. Canadian and Australian Devonian spores: zonation and correlation |
1992 |