| details |
Middle Ordovician |
Late Ordovician |
USSR(Yaroslav) |
Aristova,K.E. et al. Upper Ordovician and Silurian of the Moscow Syneclise |
1977 |
| details |
Late Ordovician |
|
USSR(Moscow Basin) |
Aristova,K.E. Typical assemblages of Ordovician and Silurian microfossils from the Moscow Syncline. |
1980 |
| details |
Early Gothlandian |
|
USSR(European) |
Aristova,K.E. et al. Substantiation of the Early-Silurian age of rocks of the Moscovian Syneclise in the light of Actual problems of its tectonic development and oil and Gas Content |
1975 |
| details |
Late Llandeilian |
Ashgillian |
USSR(Estonian SSR) |
Uutela,A. et al. Ordovician acritarchs from the Rapla borehole, Estonia |
1991 |
| details |
Late Llandeilian |
Ashgillian |
USSR(Estonian SSR) |
Uutela,A. Age and dispersal of sedimentary erratics on the coast of southwestern Finland. |
1989 |
| details |
Ordovician |
|
USSR(Estonian SSR) |
Eisenack,A. On some species of the genus Tasmanites Newton 1875. |
1963 |
| details |
Late Llandoverian |
|
Sweden |
Schultz,G. Microfossils of the Upper Llandoverian of Dalarne (Sweden). |
1967 |
| details |
Late Llandoverian |
|
Sweden |
Schultz,G. Microfossils of the Upper Llandoverian of Dalarne (Sweden). |
1967 |
| details |
Early Ordovician |
|
Sweden |
Eisenack,A. On the reproduction of Palaeozoic hystrichospheres. |
1968 |
| details |
Early Ordovician |
Middle Ordovician |
Sweden |
Eisenack,A. The microfauna of the Ostseekalke. 1. Chitinozoa, Hystrichosphaeres. |
1965 |
| details |
Llandoverian |
|
Sweden |
Eisenack,A. Microfossils of a secondary deposit from the Borkholm Stage, Baltic Ordovician, F2. |
1968 |
| details |
Nd |
|
Nd |
Eisenack,A. Some recent observations on Hystrichosphaeridium |
1962 |
| details |
Nd |
|
Nd |
Downie,C. et al. Bibliography and index of fossil dinoflagellates and acritarchs. |
1965 |
| details |
Ordovician |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Middle Caradocian |
Early Llandoverian |
Nd |
Diez,M.D.C.R. et al. Range chart of selected Lower Paleozoic acritarch Taxa. 2: Index to Parts 1 and 2. |
1977 |
| details |
Late Devonian |
|
Missouri |
Gupta,S. Palynology of Grassy Creek and Saverton Shales of Missouri. |
1965 |
| details |
Late Silurian |
|
Jordan |
Basha,S.H. Palynomorphs from Ordovician-Silurian subsurface rocks of Wadi Sirhan, East Jordan |
1990 |