| details |
Early Tremadocian |
|
Italy(Sardinia) |
Di Milia,A. et al. Tremadocian acritarch assemblages from the Solanas Sandstone Formation (Nappe zone of Central Sardinia) |
1993 |
| details |
Middle Cambrian |
Late Cambrian |
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Tremadocian |
|
Italy(Sardinia) |
Albani,R. et al. New palynological data and geological considerations on the age of the Solanas Sandstone (Cambrian-Ordovician-Central Sardinia) |
1985 |
| details |
Tremadocian |
|
France(Aude) |
Baudelot,S. et al. Palynostratigraphic information on the Lower Paleozoic of the Massif de Mouthoumet (Hautes Corbieres, Aude). |
1977 |
| original |
Tremadocian |
|
France(Herault) |
Rauscher,R. Micropaleontological and stratigraphic research in the Ordovician and Silurian in France. Study of the acritarchs, chitinozoans and spores. |
1973 |