| details |
Late Cambrian |
|
USSR(Estonian SSR) |
Eisenack,A. On Hystrichospheres and other microffossils of the Baltic Silurian and Cambrian |
1951 |
| details |
Ordovician |
|
Poland |
Jagielska,L. Flora of the Ordovician;Microflora |
1972 |
| details |
Ypresian |
|
Belgium |
Sarjeant,W.A.S. A restudy of Pastiels' (1948) dinoflagellate cysts from the Early Eocene of Belgium. |
1986 |
| details |
Early Maastrichtian |
|
Netherlands |
Lobenstein,J.J. Microscopic investigation of the Flints from Zuid-Limburg |
1972 |
| details |
Late Llandoverian |
Wenlockian |
USSR(Ukrainian SSR) |
Kiryanov,V.V. Silurian acritarchs of Volhynia and Podolia |
1978 |
| details |
Nd |
|
Nd |
De Coninck,J. Organic walled microfossils of the Lower Ypresian of Quenast. |
1986 |
| details |
Harnagian |
Onnian |
England(Shropshire) |
Turner,R.E. Acritarchs from the type area of the Ordovician Caradoc Series, Shropshire, England. |
1984 |
| details |
Caradocian |
|
Poland |
Jagielska,L. Preliminary note on microspores from the Ordovician of Brzeziny and Zbrza in the Swiety Krzyz Mts. |
1962 |
| details |
Middle Eocene |
Late Eocene |
USSR(Carpathians) |
Portnyagina,L.A. Possibility of distinguishing the Upper Cretaceous and Paleogene flysch of the Soviet Carpathians by means of data from spore-pollen analysis. |
1964 |
| details |
Early Tremadocian |
Early Ashgillian |
Poland |
Jagielska,L. Microspores of the older Palaeozoic from Bore-Hole Uszkowce 1. |
1962 |
| details |
Silurian |
|
Baltic |
Deflandre,G. The problem of Hystrichospheres. |
1947 |
| details |
Silurian |
|
Nd |
Deflandre,G. The problem of Hystrichospheres. |
1947 |
| details |
Ypresian |
|
Belgium |
Pastiels,A. Contribution to the study of microfossils of the Belgian Eocene. |
1948 |
| details |
Silurian |
|
Nd |
Deflandre,G. Groups Incertae Sedis.Hystrichospheres. chitinozoans. |
1952 |
| details |
Ashgillian |
|
France(Herault) |
Deflandre,G. Microfossils from the Silurian Limestones of Montagne Noire. |
1944 |
| details |
Silurian |
|
France(Herault) |
Deflandre,G. Microfossils from the Silurian Limestones of Montagne Noire. |
1944 |
| details |
Ordovician |
|
USSR |
Timofeev,B.V. Hystrichosphaeridae of the Cambrian |
1956 |