| original |
Late Devonian |
|
Ohio |
Winslow,M.R. Plant spores and other microfossils from Upper Devonian and Lower Mississippian rocks of Ohio |
1962 |
| details |
Early Frasnian |
Middle Tournaisian |
Canada(NWT,Mackenzie) |
Braman,D.R. et al. Upper Devonian-Lower Carboniferous miospore zonation of the Imperial and Tuttle Formations, Yukon and District of MacKenzie, Canada |
1984 |
| details |
Early Frasnian |
Middle Tournaisian |
Canada(Yukon) |
Braman,D.R. et al. Upper Devonian-Lower Carboniferous miospore zonation of the Imperial and Tuttle Formations, Yukon and District of MacKenzie, Canada |
1984 |
| details |
Nd |
|
Nd |
Pashkevich,N.G. Morphological classification of dispersed fossil spores. (In: Practical Palynostratigraphy. L.A. Panova et al, editors) |
1990 |