| details |
Acadian |
|
Czechoslovakia |
VavrdovЎ,M. Palaeozoic microplankton from central Bohemia. |
1966 |
| details |
Albian |
Early Tertiary |
Oregon |
Thompson,G.G. et al. Subsurface stratigraphy of the Ochoco Basin, Oregon. |
1984 |
| details |
Albian |
|
India(Rajasthan) |
Mathur,Y.K. et al. Angiospermous pollen and associated fossils from the Mid-Cretaceous subsurface sediments of Rajasthan, India. |
1972 |
| details |
Anisian |
|
Romania |
Antonescu,E. Study of the Anisian microflora from the Cristian Valley (Brasov). |
1970 |
| details |
Aptian |
|
Brazil(Maranhao) |
de Lima,M.R. Palynology of the Codo Formation, Region of Codo, Maranhao. |
1982 |
| details |
Aptian |
|
Canada(Eastern Offshore) |
Allen,R.P. Palynology of the Lower Cretaceous Naskapi Shale, Scotian Shelf. |
1977 |
| details |
Aptian |
Early Albian |
India(Madras) |
Jain,K.P. et al. Palynology of Dalmiapuram grey shale, Dalmiapuram Formation, District Trichinopoly, south India -1. Taxonomy. |
1973 |
| details |
Aptian |
|
India(Madras) |
Jain,K.P. et al. Plant microfossil evidence on the age of Dalmiapuram Gray Shale, District Trichinopoly. |
1969 |
| details |
Arenigian |
|
China(Hupei) |
Lu,L.-C. Acritarchs from the Dawan Formation (Arenigian) of Huanghuachang in Yichang, western Hubei. |
1987 |
| details |
Arenigian |
Llandeilian |
Belgium |
Martin,F. Acritarchs of Sart-Bernard (Belgian Ordovician) |
1965 |
| details |
Arenigian |
|
Algeria |
Deunff,J. et al. Palynoplanktonic correlation in the Cambro-Ordovician of the Sahara |
1961 |
| details |
Arenigian |
Llandeilian |
Belgium |
Servais,T. Contribution to the stratigraphy of the Ordovician Rigenee Formation (Brabant Massif, Belgium) with a preliminary study on acritarchs. |
1991 |
| details |
Arenigian |
|
Colombia |
Thery,J.-M. et al. Discovery of Arenigian acritarchs from Araracuara, (Caqueta-Colombia). Reinterpretation of the Saliente del Vaupes Area. |
1986 |
| details |
Arenigian |
|
Pakistan |
Tongiorgi,M. et al. Palynological dating (Arenig) of the sedimentary sequence overlying the Ishkarwaz Granite (Upper Yarkhun Valley, Chitral, Pakistan). |
1994 |
| details |
Arenigian |
Ashgillian |
China(Hupei) |
Tongiorgi,M. et al. Arenigian acritarchs from the Daping section (Yangtze Gorges area, Hubei Province, southern China) and their palaeogeographic significance. |
1995 |
| details |
Arenigian |
|
China(Szechwan) |
Brocke,R. Evaulation of the Ordovician acritarch genus Ampullula Righi |
1997 |
| details |
Arenigian |
Early Llanvirnian |
Pakistan |
Quintavalle,M. et al. Lower to Middle Ordovician acritarchs and chitinozoans from northern Karakorum Mountains, Pakistan. |
2000 |