| original |
Wenlockian |
|
Sweden |
Eisenack,A. Microfossils of the Gotland Silurian. Hystrichospheres and questionable types |
1965 |
| details |
Vendian |
|
USSR(Urals) |
Chepikova,I.K. Acritarchae of Wendean deposits of Volga-Ural oil and Gas Region and their significance for stratigraphy. (In: Sporen and pollen in deposits of oils and Gas-bearing Regions of the USSR.) |
1971 |
| details |
Vendian |
|
USSR(Bashkir ASSR) |
Yankauskas,T.V. Oldest assemblage of plant microfossils from the Vendian of the Bashkiria Foothills of the Urals-the Sergeyevskaya microflora |
1980 |
| details |
Vendian |
|
USSR(Urals) |
Medvedeva,A.M. Palynological investigation of Petroleum |
1978 |
| details |
Triassic |
|
USSR(Krasnoyarsk Kray) |
Chepikov,K.R. et al. Spores and pollen in oil, gas, condensates and oil-field waters. (In: Sporen and Pollen in Oils and Deposits of Oil and Gas-Bearing Regions of the USSR.) |
1971 |
| details |
Tremadocian |
|
Spain |
Fombella Blanco,M.A. Chitinozoans from the Oville Formation, Tremadocian of the Province of Leon. |
1982 |
| details |
Tremadocian |
|
Algeria |
Combaz,A. On a microbiota of Tremadocian age at Hassi-Messaoud. |
1967 |
| details |
Tremadocian |
Arenigian |
Romania |
Beju,D. Zoning and correlation of the Paleozoic of the Moesian Platform on the basis of palynoprotistological assemblages.1. |
1972 |
| details |
Silurian |
Early Devonian |
|
de Siqueira,L.P. Parecis Basin |
1989 |
| details |
Riphean |
|
USSR |
Timofeev,B.V. The Precambrian microplant fossils and their significance in identification and correlation. |
1968 |
| details |
Proterozoic |
|
USSR(Ukrainian SSR) |
Shkrebta,G.P. Causes of variability of microplant assemblages in petroleum, gases, formation water and host rocks. |
1975 |
| details |
Proterozoic |
Early Paleozoic |
Nd |
Timofeev,B.V. Symposia on fossil microplants of the Proterozoic and Early Paleozoic. (In:Mikrofitofossilii Proterozoya i Rannego Paleozoya SSSR. B.V.Timofeev, editor) |
1974 |
| details |
Proterozoic |
Middle Ordovician |
USSR |
Aksenova,G.G. et al. The use of electron-microscopic research methods for the study of plant microfossils from oils and oil-containing rocks. (In: Palynology of Proterophyte and Palaeophyte.S.N.Naumova, editor) |
1974 |
| details |
Precambriam |
|
USSR |
Yankauskas,T.V. et al. Fifth All-Union Colloquium on Precambrian microfossils of the USSR |
1987 |
| details |
Permian |
|
USSR(Permsk Nat.Okrug) |
Medvedeva,A.M. Palynological investigation of Petroleum |
1978 |
| details |
Ordovician |
Silurian |
India(Karnataka) |
Venkatachalapathy,V. et al. Occurrence of acritarchs in Halakurki Argillites of Badami Group, South India and their significance. |
1984 |
| details |
Ordovician |
Silurian |
North America |
Miller,M.A. An Early Palaeozoic "acritarch" with morphology comparable to the Hydrodictyaceae. |
1988 |