| details |
Middle Ordovician |
Late Ordovician |
Canada(Saskatchewan) |
Stasiuk,L.D. et al. The life cycle and phyletic affinity of Gloeocapsomorpha prisca, Zalessky 1917, from Ordovician rocks in the Canadian Williston Basin. (In: Current research, Part D: Interior Plains and Arctic Canada) |
1990 |
| details |
Middle Ordovician |
|
USSR(Estonian SSR) |
Foster,C.B. et al. Gloeocapsomorpha prisca, Zalessky,1917; A new study Part LI; Origin of Kukersite, a new interpretation. |
1990 |
| details |
Proterozoic |
|
India(Karnataka) |
Viswanathiah,M.N. et al. Microfossils from the Badami Group, Karnataka South India |
1976 |
| details |
Ordovician |
|
Canada(Saskatchewan) |
Stasiuk,L.D. Oil-prone alginite macerals from organic-rich Mesozoic and Palaeozoic strata, Saskatchewan, Canada. |
1994 |
| details |
Late Ordovician |
|
Canada(Saskatchewan) |
Stasiuk,L.D. Fluorescence properties of Palaeozoic oil-prone Alginite in relation to hydrocarbon generation, Williston Basin, Saskatchewan, Canada. |
1994 |
| details |
Cincinnatian |
|
Illinois |
Guthrie,J.M. et al. Geochemical indicators of depositional environment and source-rock potential for the Upper Ordovician Maquoketa Group, Illinois Basin. |
1994 |
| details |
Ordovician |
|
Poland |
Jagielska,L. Flora of the Ordovician;Microflora |
1972 |
| details |
Late Cambrian |
|
USSR(Estonian SSR) |
Eisenack,A. On Hystrichospheres and other microffossils of the Baltic Silurian and Cambrian |
1951 |
| details |
Late Gothlandian |
|
USSR(Siberia) |
Timofeev,B.V. Ordovician and Silurian phytoplankton of the Siberian Platform. |
1963 |
| details |
Cambrian |
|
USSR(Siberia) |
Rudavskaya,V.A. The acritarchs of the Motsk Strata of the Markovo oil field in East Siberia. (In: Palynology in Petroleum Geology. N.M.Ivanova, editor) |
1971 |
| details |
Early Gothlandian |
|
USSR(Estonian SSR) |
Eisenack,A. On some lower algae of the Baltic Silurian. |
1960 |
| details |
Ordovician |
|
USSR(Estonian SSR) |
Eisenack,A. Microfossils of the Ordovician from the Baltic area.1. |
1958 |
| details |
Late Cambrian |
|
USSR(Irkutskaya Oblast) |
Timofeev,B.V. Micropaleophytological research into ancient strata. |
1966 |