| details |
Middle Ordovician |
Late Ordovician |
Baltic |
Eisenack,A. On the systematics of some Palaeozoic Hystrichospheres (Acritarch) from the Baltic Region. |
1969 |
| details |
Ashgillian |
Llandoverian |
Baltic |
Eisenack,A. On the systematics of some Palaeozoic Hystrichospheres (Acritarch) from the Baltic Region. |
1969 |
| details |
Nd |
|
Nd |
Sarjeant,W.A.S. Microplankton from the Kellaways rock and Oxford Clay of Yorkshire |
1961 |
| details |
Nd |
|
Nd |
Kjellstrжm,G. Ordovician microplankton (baltisphaerids) from the Grotlingbo borehole No.1 in Gotland, Sweden. |
1971 |
| details |
Llandeilian |
|
Baltic |
Eisenack,A. New Mikrofossils of the Baltic Silurian.1. |
1931 |
| details |
Llandeilian |
|
Baltic |
Eisenack,A. New Mikrofossils of the Baltic Silurian.1. |
1931 |
| details |
Llandeilian |
|
Baltic |
Eisenack,A. New Mikrofossils of the Baltic Silurian.1. |
1931 |
| details |
Recent |
|
Nd |
Eisenack,A. A discussion of recent Hystrichospheres |
1964 |
| details |
Nd |
|
Nd |
Eisenack,A. A discussion of recent Hystrichospheres |
1964 |
| details |
Nd |
|
Nd |
Dжrhжfer,G. et al. Evolution of archeopyle and tabulation in rhaetogonyaulacinean dinoflagellate cysts. |
1980 |
| details |
Late Oxfordian |
|
Poland |
Sarjeant,W.A.S. Restudy of a 19th-Century dinoflagellate cyst holotype from the Polish Upper Jurassic. |
1980 |
| details |
Ordovician |
|
Finland |
Tynni,R. On Paleozoic microfossils in clastic dykes on the …land Islands and in the core samples of Lumparn. (In: Paleozoic sediments in the Rapakivi area of the …land Islands. L. Bergman, R. Tynni and B. Winterhalter, editors.) |
1982 |
| details |
Early Ashgillian |
Middle Ashgillian |
Canada(Anticosti Island) |
Jacobson,S.R. et al. Acritarch biostratigraphy of the Dicellograptus complanatus graptolite zone from the Vaureal form Ation, (Ashgillian), Anticosti Island, Quebec, Canada. |
1985 |
| details |
Dogger |
|
Poland |
Eisenack,A. Eodinia pachytheca, nov.gen., nov.sp., a primative dinoflagellate from a Kelloway Bed of East Prussia. |
1936 |
| details |
Harnagian |
Onnian |
England(Shropshire) |
Turner,R.E. Acritarchs from the type area of the Ordovician Caradoc Series, Shropshire, England. |
1984 |
| details |
Maastrichtian |
|
USSR(Georgian SSR) |
Maslov,V.P. Hystrichosphaera-spore, what kind of organism? Fossil calcareous algae of the USSR |
1956 |
| details |
Late Senonian |
|
Denmark |
Wetzel,O. Micropaleontological investigation of the Upper Senonian chalk from Stevns Klint-Kridtbrud on the Danish Seeland Island, and reference to flint boulders. |
1940 |