| original |
Emsian |
|
Canada(Ontario) |
Playford,G. Lower to Middle Devonian acritarchs of the Moose River Basin, Ontario. |
1977 |
| details |
Gedinnian |
Siegenian |
France(Manche) |
Moreau-Benoit,A. et al. Lower Devonian schists and limestones of Nehou in the Barneville Section, (Northeastern Armoricain Massif). Sedimentology, palynology, planktology, stratigraphy. |
1982 |
| details |
Early Emsian |
Middle Emsian |
Canada(Ontario) |
Wicander,R. A catalogue and biostratigraphic distribution of North American Devonian acritarchs. |
1983 |
| details |
Emsian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |