| details |
Tarannon |
Wenlockian |
Belgium |
Martin,F. Acritarchs from the Park at Neuville-Sous-Huy (Belgian Silurian) |
1966 |
| details |
Early Ludlovian |
|
Nd |
Lister,T.R. et al. New evidence for the age of the primitive Echinoid Myriastiches gigas |
1967 |
| details |
Silurian |
Devonian |
Brazil(Maranhao) |
Brito,I.M. Contribution to the knowledge of Silurian and Devonian microfossils from the State of Maranhao LII. genus Veryhachium (Acritarchs). |
1968 |
| details |
Silurian |
|
Belgium |
Martin,F. The acritarchs from the Belgian Ordovician and Silurian. Determination and stratigraphic value. |
1968 |
| details |
Late Devonian |
|
Belgium |
Martin,F. The acritarchs from the Belgian Ordovician and Silurian. Determination and stratigraphic value. |
1968 |
| details |
Early Kinderhookian |
Middle Kinderhookian |
Missouri |
Brown,D.D. Palynology of the Hannibal Formation, (Lower Mississippian), of northeast Missouri and western Illinois. |
1969 |
| details |
Early Kinderhookian |
Middle Kinderhookian |
Illinois |
Brown,D.D. Palynology of the Hannibal Formation, (Lower Mississippian), of northeast Missouri and western Illinois. |
1969 |
| details |
Llandoverian |
|
Spain |
Casielles,J.M. et al. Discovery of chitinozoas and acritarchs in the Silurian Slates of Teverga (Asturias). |
1969 |
| details |
Middle Ordovician |
|
USSR(Yaroslav) |
Umnova,N.I. et al. Acritarchs from the Yaroslavskoi series of the northern part of the Russian Platform |
1970 |
| details |
Cenomanian |
|
England(Surrey) |
Davey,R.J. Non-calcareous microplankton from the Cenomanian of England, Northern France and North America. Part 2. |
1970 |
| details |
Cenomanian |
|
England(Isle of Wight) |
Davey,R.J. Non-calcareous microplankton from the Cenomanian of England, Northern France and North America. Part 2. |
1970 |
| details |
Cenomanian |
|
France |
Davey,R.J. Non-calcareous microplankton from the Cenomanian of England, Northern France and North America. Part 2. |
1970 |
| details |
Albian |
|
Canada(Saskatchewan) |
Davey,R.J. Non-calcareous microplankton from the Cenomanian of England, Northern France and North America. Part 2. |
1970 |
| details |
Silurian |
|
Nd |
Cramer,F.H. Distribution of selected Silurian acritarchs an account of the palynostratigraphy and paleogeography of selected Silurian acritarch Taxa |
1970 |
| details |
Ludlovian |
Downtonian |
Wales |
Warren,P.T. The significance of recent research in Britain on the Ludovian-Downtonian boundary. (In: The boundary between the Silurian and Devonian and Biostratigraphy of the Silurian. D.V.Nalivkin, editors) |
1971 |
| details |
Middle Albian |
Late Albian |
Canada(Alberta) |
Singh,C. Lower Cretaceous microfloras of the Peace River area, Northwestern Canada, (Alberta). |
1971 |
| details |
Silurian |
|
USSR(European) |
Sheshegova,L.I. Some Silurian acritarchs of Podolia. |
1971 |