| original |
Llandeilian |
|
Poland |
Gгrka,H. Microorganisms of the Ordovician of Poland. |
1969 |
| original |
Late Ordovician |
|
Sweden |
Eiserhardt,K.H. Baltisphaerid of the –jlemyrflint of Gotland, Sweden (Acritarchs of the Upper Ordovician boulders). |
1989 |
| details |
Silurian |
|
Baltic |
Eisenack,A. et al. Catalog of fossil dinoflagellates, hystrichospheres and related microfossils. Acritarchs. |
1973 |
| details |
Middle Ordovician |
|
Sweden |
Eisenack,A. et al. Catalog of fossil dinoflagellates, hystrichospheres and related microfossils. Acritarchs. |
1973 |
| details |
Llandeilian |
|
Poland |
Eisenack,A. et al. Catalog of fossil dinoflagellates, hystrichospheres and related microfossils. Acritarchs. |
1973 |
| details |
Late Ashgillian |
|
Poland |
Eisenack,A. et al. Catalog of fossil dinoflagellates, hystrichospheres and related microfossils. Acritarchs. |
1973 |
| details |
Ordovician |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Tremadocian |
Ashgillian |
Nd |
Diez,M.D.C.R. et al. Range chart of selected Lower Paleozoic acritarch Taxa. |
1974 |
| details |
Late Ordovician |
|
Baltic |
VavrdovЎ,M. Geographical differentiation of Ordovician acritarch assemblages in Europe. |
1974 |
| details |
Middle Ordovician |
|
Finland |
Tynni,R. Ordovician hystrichospheres and chitinozoans in limestone from the Bothnian Sea. |
1975 |
| details |
Middle Ordovician |
|
Sweden |
Kjellstrжm,G. Lower Viruan Middle Ordovician microplankton from the Ekon borehole No.1 in Ostergotland, Sweden. |
1976 |
| details |
Ludlovian |
Siedlce |
Poland |
Stempien,M. Ordovician and Silurian acritarchs of the Niestachow Sandstone Formation (Gory Swietokrzyskie Mountains) |
1990 |
| details |
Nd |
|
Nd |
Molyneux,S.G. et al. Paleozoic phytoplankton. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |
| details |
Llandeilian |
Caradocian |
Iran |
Reitz,E. et al. Ordovician acritarchs from the Banestan Kerman area, Central Iran Paleobiogeographical evidence for a Warm Water environment |
1995 |
| details |
Middle Ordovician |
|
USSR(Estonian SSR) |
Bockelie,T.G. et al. Middle Ordovician acritarchs from the Island of Odinsholm, Estonia. |
1979 |
| details |
Late Cincinnatian |
|
Canada(Anticosti Island) |
Barnes,C.R. Lower Silurian chronostratigraphy of Anticosti Island,Quebec. (In: A Global Standard for the Silurian System. C.H. Holland and M.G.Bassett, editors) |
1989 |
| details |
Arenigian |
Llanvirnian |
Sweden |
Righi,E. Ampullula, a new acritarch genus from the Ordovician (Arenig-Llanvirn) of Oland, Sweden. |
1991 |