| details |
Emsian |
Famennian |
North America |
Combaz,A. et al. The "Leiofusidae" Eisenack, 1938. |
1967 |
| details |
Emsian |
Famennian |
Africa |
Combaz,A. et al. The "Leiofusidae" Eisenack, 1938. |
1967 |
| details |
Couvinian |
|
Canada(Ontario) |
Eisenack,A. et al. Catalog of fossil dinoflagellates, hystrichospheres and related microfossils. Vol.5 Acritarcha. |
1979 |
| details |
Early Frasnian |
|
France(Pas-de-Calais) |
Deunff,J. Preliminary observations on the paleophytoplankton of a cutting from Caffiers, (Givetien - Frasnien du Boulnnais, France). |
1981 |
| details |
Middle Devonian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |