| details |
Early Ordovician |
|
USSR(Pre-Baltic) |
Downie,C. et al. On the interpretation and status of some Hystrichosphere genera. |
1963 |
| details |
Nd |
|
Nd |
Downie,C. et al. Bibliography and index of fossil dinoflagellates and acritarchs. |
1965 |
| details |
Middle Ordovician |
|
USSR(Vologda) |
Timofeev,B.V. et al. Microfossils of the Precambrian, Cambrian and Ordovician. |
1976 |
| details |
Early Ordovician |
|
USSR(Belorussian SSR) |
Golubtsov,V.K. Stratigraphic and paleontological research in Byelorussia. |
1978 |
| details |
Late Arenigian |
|
USSR(Ukrainian SSR) |
Tsegelnyuk,P.D. Ordovician stratigraphy of the Southwestern Region of the Russian Platform |
1980 |
| details |
Arenigian |
|
China(Shanghai) |
Hu,Y. Micropalaeoflora from the Early Ordovician in Gaoqiao Region of Shaanxi and its stratigraphic significance. |
1986 |
| details |
Early Ordovician |
|
USSR(Pre-Baltic) |
Hu,Y. Micropalaeoflora from the Early Ordovician in Gaoqiao Region of Shaanxi and its stratigraphic significance. |
1986 |
| details |
Arenigian |
|
USSR(Belorussian SSR) |
Nekryata,N.S. et al. Palynological study of Proterozoic and Phanerozoic deposits of Byelorussia. (In: Palynology in the USSR. A.F.Chlonova, editor) |
1988 |
| details |
Early Ordovician |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |