| details |
Middle Ordovician |
|
Finland |
Tynni,R. Ordovician hystrichospheres and chitinozoans in limestone from the Bothnian Sea. |
1975 |
| details |
Middle Llandoverian |
|
USSR(Orenburg) |
Talnov,E.S et al. Lower Silurian sediments of the Allochthonous complex in the Southern Part of the East Urals Meganticlinorium |
1987 |
| details |
Middle Gothlandian |
|
New York |
Tappan,H. The Paleobiology of Plant Protists. |
1980 |
| details |
Middle Frasnian |
|
Belgium |
Dricot,E.M. Evolution and paleogeographic distribution of microplankton (Acritarchs) in the Frasnian of Belgium. |
1967 |
| details |
Middle Frasnian |
Late Frasnian |
England(Cornwall) |
Selwood,E.B. et al. A revision of the Upper Paleozoic stratigraphy of the Trevone Basin, North Cornwall, and its regional significance. |
1993 |
| details |
Middle Devonian |
Late Devonian |
Iran |
Kimyai,A. Devonian spores from the Hassanakdar area, Iran. |
1979 |
| details |
Middle Cambrian |
|
Belgium |
Vanguestaine,M. Palynostratigraphic criteria leading to the knowledge of a Revinian Recumbent Fold from the Grand-Halleux borehole. |
1977 |
| details |
Middle Cambrian |
|
Belgium |
Vanguestaine,M. Palynostratigraphic criteria leading to the knowledge of a Revinian Recumbent Fold from the Grand-Halleux borehole. |
1977 |
| details |
Middle Cambrian |
|
France(Tarn) |
Fournier-Vinas,C. Cambro-Ordovician acritarchs from the Lacaune Mountains, (North of the Black Mountains, France). |
1978 |
| details |
Middle Cambrian |
|
France(Tarn) |
Fournier-Vinas,C. Cambro-Ordovician acritarchs from the Lacaune Mountains, (North of the Black Mountains, France). |
1978 |
| details |
Middle Cambrian |
|
France(Tarn) |
Fournier-Vinas,C. Cambro-Ordovician acritarchs from the Lacaune Mountains, (North of the Black Mountains, France). |
1978 |
| details |
Middle Cambrian |
|
France(Tarn) |
Fournier-Vinas,C. Cambro-Ordovician acritarchs from the Lacaune Mountains, (North of the Black Mountains, France). |
1978 |
| details |
Middle Cambrian |
|
France(Tarn) |
Fournier-Vinas,C. Cambro-Ordovician acritarchs from the Lacaune Mountains, (North of the Black Mountains, France). |
1978 |
| details |
Middle Cambrian |
|
USSR(Baltic) |
Yankauskas,T.V. Lower and Middle Cambrian acritarch-Based biozonation of the Baltic Synclise. |
1993 |
| details |
Middle Cambrian |
|
Czechoslovakia |
Slavikova,K. New finds of acritarchs in the Middle Cambrian of the Barrandian, (Czechoslovakia). |
1968 |
| details |
Middle Cambrian |
Early Ordovician |
USSR(Pamirs) |
Sivertseva,I.A. et al. Lower Paleozoic microfossil finds in South-Eastern Pamir. (In: Microfossils USSR. T.F.Vozzhennikova et al, editors) |
1974 |
| details |
Middle Cambrian |
|
Czechoslovakia |
Fatka,O. Acritarch assemblage in the Onymagnostus hybridus zone, (Jince Formation, Middle Cambrian, Czechoslovakia). |
1989 |