| details |
Late Ludlovian |
Early Pridolian |
Argentina(San Juan) |
Rubinstein,C.V. Acritarchs from the Upper Silurian of San Juan, Argentina: Biostratigraphy and palaeobiogeography. (In: Contributions to Acritarch and Chitinozoan Research. S.G.Molyneux and K.J.Doring, editors) |
1993 |
| details |
Late Cambrian |
|
Estonia |
Volkova,N.A. Acritarchs from the Cambrian - Ordovician Boundary Beds, (Boring Core M-56), of the Estonian, near Clint Area. |
1993 |
| details |
Early Telychian |
|
Scotland(Dumfries) |
White,D.E. et al. Biostratigraphy of Late Llandovery (Telychian) and Wenlock Turbiditic sequences in the southwest Southern Uplands, Scotland. |
1992 |
| details |
Early Riphean |
|
Canada(NWT,Franklin) |
Hofmann,H.J. et al. Shelf-facies microfossils from the Uluksan Group (Proterozoic Bylot Supergroup), Baffin Island, Canada. |
1991 |
| details |
Ashgillian |
|
Wales(Powys) |
Barron,H.F. Moyeria carbottii from the Ordovician of Wales, United Kingdom. |
1991 |
| details |
Early Rhuddanian |
|
Czechoslovakia |
Dufka,P. Palynomorphs in the Llandovery black shale sequence of the Prague Basin (Barrandian area, Bohemia). |
1990 |
| details |
Late Aeronian |
Early Telychian |
Czechoslovakia |
Dufka,P. Acritarchs of the monograptus Sedgwickii Zone, (Zelkovice Formation, Llandovery), from Hyskov, Barrandian, Bohemian Massif |
1990 |
| details |
Wenlockian |
|
Canada(Ontario) |
Eley,B.E. et al. Cherts of Southern Ontario |
1989 |
| details |
Tremadocian |
|
Estonia |
Volkova,N.A. Acritarchs from the Cambrian-Ordovician boundary sediments of northern Estonia |
1989 |
| details |
Early Ludlovian |
Middle Ludlovian |
Argentina(San Juan) |
Rubinstein,C.V. Acritarch from the Silurian of the Jachal River Valley (Los Esp Formation), San Juan Province, Republica Argentina Subgroups Herkumorphita, Netromorphitae and Polgonomorphitae |
1989 |
| details |
Late Cambrian |
Early Tremadocian |
USSR(Estonian SSR) |
Volkova,N.A. Acritarchs of the Desposits of the Cambrian-Ordovician boundary northern Estonia |
1989 |
| details |
Tremadocian |
Arenigian |
China(Shanghai) |
Hu,Y. Micropalaeoflora from the Early Ordovician in Gaoqiao Region of Shaanxi and its stratigraphic significance. |
1986 |
| details |
Ashgillian |
|
Libya |
Molyneux,S.G. et al. Late Ordovician palynomorphs. (In: Palynology of Northeast Libya. B.Thusu and B.Owens, editors) |
1985 |
| details |
Arenigian |
|
Italy(Sardinia) |
Albani,R. et al. New palynological data and geological considerations on the age of the Solanas Sandstone (Cambrian-Ordovician-Central Sardinia) |
1985 |
| details |
Tremadocian |
|
Italy(Sardinia) |
Albani,R. et al. New palynological data and geological considerations on the age of the Solanas Sandstone (Cambrian-Ordovician-Central Sardinia) |
1985 |
| details |
Wenlockian |
|
USSR(Krasnoyarsk Kray) |
Sheshegova,L.I. The acritarchs of the Silurian of the northern Siberian Platform |
1984 |
| original |
Llandoverian |
Wenlockian |
Czechoslovakia |
PacltovŠ,B. The methodology and new technique of micropaleontological study of metamorphic rocks. (In: Correlation of the Proterozoic and Paleozoic Stratiform deposits VII) |
1984 |