| 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 |
Late Ordovician |
|
USSR(Komi ASSR) |
Timofeev,B.V. Micropaleophytological research into ancient strata. |
1966 |
| original |
Early Silurian |
|
USSR(Moscow Basin) |
Zalessky,M.D. On marine sapropelite of Silurian age, formed by blue-green alga. |
1917 |
| original |
Early Cambrian |
|
USSR(Caucasus) |
Timofeev,B.V. The age of the older sedimentary rocks of the northern Elbrus Region |
1962 |
| original |
Late Riphean |
Vendian |
USSR(Ukrainian SSR) |
Timofeev,B.V. Pre-Cambrian microplankton from the Ukraine. |
1973 |