| details |
Silurian |
Devonian |
USSR(Georgian SSR) |
Abesadze,M. et al. New data on age of metamorphosed Schists of Dzirulj Massif |
1980 |
| details |
|
|
USSR(Georgian SSR) |
Abesadze,M. et al. New data on age of metamorphosed Schists of Dzirulj Massif |
1980 |
| details |
Late Llandoverian |
|
Canada(Quebec) |
Achab,A. Acritarchs from the Awantjish Formation (Upper Llandoverian) in the Val Brillant Borehold, Matapedia Valley, Quebec. |
1976 |
| original |
Late Scythian |
Ladinian |
Libya |
Adloff,M.C. et al. Trias of Tripolitania (Libya) new biostratigraphic and palynological data. Part two. |
1986 |
| details |
Late Valanginian |
Hauterivian |
|
Aguirre-Urreta,M.B. et al. Advances in the biostratigraphy of the Agrio Formation (Lower Cretaceous) of the Neuqu©n Basin, Argentina: ammonites, palynomorphs and calcareous nannofossils. |
1999 |
| details |
Late Rhaetian |
Hettangian |
Celtic Sea |
Ainsworth,N.R. et al. Biostratigraphy of the Lower Cretaceous, Jurassic, and Uppermost Triassic of the North Celtic Sea and Fastnet Basins. (In: Petroleum Geology of North West Europe. J.J.Brooks and K.W.Glennie, editors) |
1987 |
| details |
Late Sinemurian |
Early Bajocian |
Celtic Sea |
Ainsworth,N.R. et al. Jurassic and Upper Triassic biostratigraphy of the North Celtic Sea and Fastnet Basins. (In:Northwest European Micropalaeontology and Palynology.D.J. Batten and M.C. Keen, editors) |
1989 |
| original |
Llandoverian |
|
Libya |
Al-Ameri,T.K. Observations of the wallstructure and excystment mechanisum of acritarchs. |
1986 |
| details |
Marshbrookian |
Early Pushgillian |
Saudi Arabia |
Al-Hajri,S. Biostratigraphy of the Ordovician chitinozoa of Northwestern Saudi Arabia. (In: Palaeozoic Palynostratigraphy of the Kingdom of Saudi Arabia. B.Owens et al, editors) |
1995 |
| details |
Frasnian |
|
W.Germany(N.Rhine) |
Amirie,G.H.B. Phytoplankton of the Frasnian of Bergisch Syncline of the North Rhineland |
1984 |
| details |
Frasnian |
|
W.Germany(N.Rhine) |
Amirie,G.H.B. Phytoplankton of the Frasnian of Bergisch Syncline of the North Rhineland |
1984 |
| details |
Late Tatarian |
|
Australia(NSW) |
Anderson,H.M. et al. A preliminary review of the biostratigraphy of the uppermost Permian, Triassic and lowermost Jurassic of Gondwanaland. |
1970 |
| details |
Early Liassic |
|
England |
Andreieff,P. et al. The stratigraphy of the post Paleozoic sequences in Part of the Western Channel. |
1975 |
| details |
Cambrian |
|
Romania |
Anonymous Biostratigraphic Schemes |
1981 |
| details |
Oligocene |
|
Chile |
Archangelsky,S. et al. Some paleomicroplankton elements in the Lower Tertiary of Patagonia (Argentina and Chile). |
1971 |
| details |
Early Cambrian |
Middle Cambrian |
USSR(Baltic) |
Aren,B. et al. The Baltic Syncline. (In: Stratigraphy of Upper Precambrian and Cambrian deposits on the western part of the East European Platform. B.M.Keller and A.Y.Rozanov, editors) |
1979 |
| details |
Late Ordovician |
|
USSR(Moscow Basin) |
Aristova,K.E. Typical assemblages of Ordovician and Silurian microfossils from the Moscow Syncline. |
1980 |