| original |
Arenigian |
|
E.Germany(Rostock) |
Burmann,G. Further organic microfossils from the Lower Ordovician. |
1970 |
| details |
Early Gothlandian |
|
France(Manche) |
Rauscher,R. Micropaleontological and stratigraphic research in the Ordovician and Silurian in France. Study of the acritarchs, chitinozoans and spores. |
1973 |
| details |
Llanvirnian |
|
France |
Rauscher,R. Ordovician acritarchs from France. |
1974 |
| details |
Late Arenigian |
Early Llanvirnian |
Saudi Arabia |
Eisenack,A. et al. Catalog of fossil dinoflagellates, hystrichospheres and related microfossils. Acritarchs. |
1976 |
| details |
Middle Gothlandian |
|
S.Ireland(Galway) |
Emo,G.T. et al. Palynological evidence for the age of the Lower Palaeozoic rocks of Slieve Aughty, Counties Clare and Galway. |
1978 |
| details |
Silurian |
|
S.Ireland(Clare) |
Emo,G.T. et al. Palynological evidence for the age of the Lower Palaeozoic rocks of Slieve Aughty, Counties Clare and Galway. |
1978 |
| details |
Nd |
|
Nd |
Cramer,F.H. et al. Lower Paleozoic acritarchs. |
1979 |
| details |
Arenigian |
|
Wales |
Downie,C. et al. Changes in the acritarch assemblages at the Tremadoc boundaries in the United Kingdom. |
1979 |
| details |
Tremadocian |
Arenigian |
Spain |
Wolf,R. Acritarchs of the Tremadocian Keltiberien (northeast Spain). |
1980 |
| details |
Arenigian |
|
China(Yunnan) |
Fang,X. Ordovician micropaleoplants in Kunming-Luguan Region, Yunnan Province and their stratigraphical significance. |
1985 |
| details |
Late Cambrian |
Early Tremadocian |
Canada(Newfoundland) |
Parsons,M.G. et al. Three new assemblages of acritarchs from Late Upper Cambrian to Early Tremadocian rocks of Random Island, Trinity Bay, Eastern Newfoundland. |
1986 |
| details |
Soudleyan |
|
Wales(Gwynedd) |
Barron,H.F. Moyeria cabottii from the Ordovician of Wales, U.K. |
1990 |
| details |
Hirnantian |
|
Wales(Montgomeryshire) |
Barron,H.F. Moyeria cabottii from the Ordovician of Wales, U.K. |
1990 |
| details |
Nd |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Nd |
|
Nd |
Martin,F. Acritarchs: A review |
1993 |
| details |
Early Llanvirnian |
|
Belgium |
Servais,T. et al. Lower Llanvirn, (Ordovician), graptolites and acritarchs from the Assise de Huy Bande de Sambre-et-Meuse, Belgium. |
1993 |
| details |
Arenigian |
|
E.Germany |
Sarjeant,W.A.S. et al. The Micrhystridium and Veryhachium Complexes (Acritarcha: Acanthomorphitae and Polygonomorphitae): A taxonomic reconsideration. |
1994 |