| details |
Nd |
|
Nd |
Downie,C. et al. Bibliography and index of fossil dinoflagellates and acritarchs. |
1965 |
| details |
Tremadocian |
|
France(Herault) |
Martin,F. Acritarchs of the Lower Ordovician of the Montagne Noire (Herault, France). |
1972 |
| details |
Tremadocian |
|
Baltic |
Yankauskas,T.V. Revision of the age of the "Cambro-Ordoviciennes" formations of the Baltic Region by micropaleontological analysis. (Acritarchs and chitinozoes) |
1976 |
| details |
Late Cambrian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |