| original |
Siegenian |
Emsian |
Canada(Ontario) |
Playford,G. Lower to Middle Devonian acritarchs of the Moose River Basin, Ontario. |
1977 |
| details |
Late Siegenian |
Early Emsian |
Canada(Ontario) |
Wicander,R. A catalogue and biostratigraphic distribution of North American Devonian acritarchs. |
1983 |
| details |
Late Frasnian |
Early Famennian |
Belgium |
Vanguestaine,M. et al. Acritarch zonation of the Upper Frasnian - Lower Famennian of the Dinant, Namur, Herve and Campine Basins, (Upper Devon of Belgium). |
1983 |
| details |
Late Frasnian |
|
France(Boulonnais) |
Loboziak,S. et al. Miospores and acritarchs of the Hydrequent Formation (Upper Frasnian to Lower Famennian, Boulonnais, France). |
1983 |
| details |
Emsian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |