| details |
Middle Siegenian |
Emsian |
Spain |
Eisenack,A. et al. Catalog of fossil dinoflagellates, hystrichospheres and related microfossils. Acritarchs. |
1973 |
| details |
Siegenian |
Emsian |
Nd |
Diez,M.D.C.R. et al. Range chart of selected Lower Paleozoic acritarch Taxa. |
1974 |
| details |
Emsian |
Famennian |
Algeria |
Downie,C. Devonian acritarchs. (In: The Devonian System. M.R. House et al, editors) |
1979 |
| details |
Early Gothlandian |
|
Argentina(San Juan) |
Pжthe de Baldis,E.D. Lower Silurian acritarchs from Villicum, Province of San Juan, Argentine Precordillera, Argentina. |
1980 |
| details |
Middle Siegenian |
Emsian |
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Middle Llandoverian |
|
Argentina(San Juan) |
Pжthe de Baldis,E.D. Acritarchs from the Early to Middle Llandoverian Don Braulio Formation of the eastern Precordillera of San Juan Province, Argentina |
1997 |