| details |
Late Precambrian |
Early Cambrian |
Romania |
Iliescu,V. et al. On the presence of the Lower Cambrian in the East Carpathians: Epimetamorphic Tulghes Series. |
1971 |
| details |
Middle Proterozoic |
|
USSR(Siberia) |
Ilchenko,L.I. Late Precambrian acritarchs of North Siberia and their stratigraphic significance. |
1973 |
| details |
Late Precambrian |
|
Antarctica |
Smirnova,L.N. Acritarchs of the Late Pre-Cambrian and Cambrian of Antarctica. (In: Stratigraphy and Correlation of Sediments Using Palynology Methods. Materials IV All-Union Palynological Conference. G.N.Papulov, editor) |
1983 |