| details |
Tremadocian |
|
England(Shropshire) |
Downie,C. et al. Bibliography and index of fossil dinoflagellates and acritarchs. |
1965 |
| details |
Tremadocian |
|
England(Shropshire) |
Downie,C. An assemblage of microplankton from the Shineton Shale (Tremadocian) |
1958 |
| original |
Tremadocian |
|
England(Shropshire) |
Downie,C. An assemblage of microplankton from the Shineton Shale (Tremadocian) |
1958 |
| details |
Tremadocian |
|
England(Shropshire) |
Kjellstrжm,G. Middle Ordovician microplankton from the Grotlingbo borehole No.1 in Gotland, Sweden. |
1971 |
| details |
Tremadocian |
|
England(Shropshire) |
Bockelie,T.G. et al. Middle Ordovician acritarchs from the Island of Odinsholm, Estonia. |
1979 |
| details |
Tarannon |
|
Ohio |
Cramer,F.H. Distribution of selected Silurian acritarchs an account of the palynostratigraphy and paleogeography of selected Silurian acritarch Taxa |
1970 |
| details |
Silurian |
Emsian |
France(Bretagne) |
Moreau-Benoit,A. Palynological and planktonic research on the Devonian and some Silurian formations of the southeast Massif Armoricain. |
1974 |
| details |
Silurian |
|
USSR(Estonian SSR) |
Eisenack,A. On Hystrichospheres and other microffossils of the Baltic Silurian and Cambrian |
1951 |
| details |
Silurian |
|
USSR(Estonian SSR) |
Eisenack,A. On Hystrichospheres and other microffossils of the Baltic Silurian and Cambrian |
1951 |
| details |
Silurian |
|
Nd |
Deflandre,G. Groups Incertae Sedis.Hystrichospheres. chitinozoans. |
1952 |
| details |
Silurian |
|
Nd |
Deflandre,G. The problem of Hystrichospheres. |
1947 |
| details |
Ordovician |
|
W.Germany(N.Rhine) |
Kr¤usel,R. Are the Paleozoic Hystrichosphaeridiea cysts or plant spores? |
1939 |
| details |
Ordovician |
|
Poland |
Jagielska,L. Flora of the Ordovician;Microflora |
1972 |
| details |
Ordovician |
|
W.Germany(Rhineland) |
Eisenack,A. Chitinozoans and Hystrichospheres in the Ordovician of the Rhine Schiefergebirge. |
1939 |
| details |
Ordovician |
|
Czechoslovakia |
Eisenack,A. Microfossils from Flintstones of the Ordovician in Bohemia. |
1948 |
| details |
Ordovician |
|
USSR |
Timofeev,B.V. Hystrichosphaeridae of the Cambrian |
1956 |
| details |
Ordovician |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |