| original |
Early Cambrian |
|
Scotland |
Downie,C. Lower Cambrian acritarchs from Scotland, Norway, Greenland and Canada. |
1982 |
| details |
Cambrian |
Tremadocian |
Italy |
Sassi,F.P. et al. Acritarch dating of Phyllites in the Agordo area (South-Alpine Basement of the eastern Alps, Italy). |
1984 |
| details |
Early Cambrian |
|
USSR(Kazakh SSR) |
Rudavskaya,V.A. The stratigraphic importance of Proterozoic-Early Cambrian acritarchs for the Siberian and Russian Platforms. (In: Palynological Investigations of Paleozoic and Mesozoic deposits of Northern USSR and Caspian Sea Region. N.A. Timoshina, editor) |
1985 |
| details |
Nd |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Early Cambrian |
|
Nd |
Martin,F. Acritarchs: A review |
1993 |