| original |
Middle Cambrian |
|
Sweden |
Hagenfeldt,S.E. Acritarch assemblages of Early and Middle Cambrian age in the Baltic Depression and South-Central Sweden |
1988 |
| details |
Wenlockian |
Devonian |
Canada(Ontario) |
Eley,B.E. et al. Cherts of Southern Ontario |
1989 |
| details |
Middle Cambrian |
|
Baltic Sea |
Hagenfeldt,S.E. Middle Cambrian acritarchs from the Baltic Depression and South-Central Sweden, taxonomy and biostratigraphy. |
1989 |
| details |
Middle Cambrian |
|
Bothnian Gulf/Sea |
Hagenfeldt,S.E. Middle Cambrian acritarchs from the Baltic Depression and South-Central Sweden, taxonomy and biostratigraphy. |
1989 |
| details |
Middle Cambrian |
|
Sweden |
Hagenfeldt,S.E. Middle Cambrian acritarchs from the Baltic Depression and South-Central Sweden, taxonomy and biostratigraphy. |
1989 |
| details |
Middle Cambrian |
|
Baltic Sea |
Hagenfeldt,S.E. Lower Cambrian acritarchs from the Baltic Depression and South-Central Sweden, taxonomy and biostratigraphy. |
1989 |
| details |
Middle Cambrian |
|
Bothnian Gulf/Sea |
Hagenfeldt,S.E. Lower Cambrian acritarchs from the Baltic Depression and South-Central Sweden, taxonomy and biostratigraphy. |
1989 |
| details |
Middle Cambrian |
|
Sweden |
Hagenfeldt,S.E. Lower Cambrian acritarchs from the Baltic Depression and South-Central Sweden, taxonomy and biostratigraphy. |
1989 |
| details |
Middle Cambrian |
|
Sweden(Gotland) |
Hagenfeldt,S.E. Lower Cambrian acritarchs from the Baltic Depression and South-Central Sweden, taxonomy and biostratigraphy. |
1989 |
| details |
Oligocene |
|
Pacific Ocean(Bohai Sea) |
Hu,J. et al. The Bohai Bay Basin. (In: Chinese Sedimentary Basins. X.Zhu, editor) |
1989 |
| details |
Late Oligocene |
|
Pacific Ocean(Bohai Sea) |
Hu,J. et al. The Bohai Bay Basin. (In: Chinese Sedimentary Basins. X.Zhu, editor) |
1989 |
| details |
Tremadocian |
|
USSR(Estonian SSR) |
Volkova,N.A. Acritarchs from the Upper Pakeroritskogo horizon from northern Estonia and Leningrad Oblast. (In: Paleoflora and Stratigraphy of the Phanerozoic. M.A.Akhmetev, editor) |
1989 |
| details |
Early Pridolian |
Late Ludfordian |
England(Herefordshire) |
Richardson,J.B. et al. Palynofacies in a Late Silurian regressive sequence in the Welsh Borderland and Wales |
1990 |
| details |
Middle Cambrian |
Late Cambrian |
USSR(Yaroslav) |
Volkova,N.A. Middle and Upper Cambrian acritarchs in the East-European Platform |
1990 |
| details |
Asselian |
|
Antarctica |
Larsson,K. et al. An Early Permian palynoflora from Milorgfjella, Dronning Maud Land, Antarctica. |
1990 |
| details |
Early Cambrian |
|
Norway |
Vidal,G. et al. Lower Cambrian acritarchs and Proterozoic-Cambrian boundary in Southern Norway |
1990 |
| details |
Ludlovian |
Siedlce |
Poland |
Stempien,M. Ordovician and Silurian acritarchs of the Niestachow Sandstone Formation (Gory Swietokrzyskie Mountains) |
1990 |