| original |
Arenigian |
|
Sweden |
Eisenack,A. Contribution to acritarch research. |
1974 |
| details |
Ordovician |
|
Sweden |
Eisenack,A. Microfossils of the Vaginatum Limestone of Halludden, Oland. |
1976 |
| details |
Arenigian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Late Volkov |
Early Kunda |
Sweden |
Ribecai,C. et al. Quantitative biostratigraphy applied to Volkhov-Kunda Palynife, (Acritarchs) sequences of northern Oland. (In: Commision Internationale de microflore du Paleozoique (CIMP) Acritarch Subcommision: O.Fatka and T.Servais, editors) |
1996 |