| details |
Early Soudleyan |
|
Wales(Powys) |
Cave,R. et al. Age of the Ordovician Andesitic Conglomerate of Castle Hill, Montgomery, Powys, Wales |
1988 |
| details |
Llanvirnian |
|
Wales(Caernarvonshire) |
Molyneux,S.G. Advances and problems in Ordovician palynology in England and Wales |
1990 |
| details |
Late Llanvirnian |
|
Wales |
Trythall,R.J.B. et al. Age and controls of Ironstone deposition (Ordovician) North Wales. |
1987 |
| details |
Early Llanvirnian |
|
W.Germany(Niedersachsen) |
Maletz,J. et al. Acritarchs and graptolites from the Early Llanvirn (Ordovician) of the Herscheider Schichten (Rheinisches Schiefergebirge, Germany). |
1993 |
| details |
Early Siegenian |
Middle Siegenian |
W.Germany(N.Rhine) |
Steemans,P. The study of palynostratigraphy of the Devonian of western Europe. |
1986 |
| details |
Llanvirnian |
|
United Kingdom |
Downie,C. Acritarchs in British stratigraphy |
1984 |
| details |
Early Llanvirnian |
|
Tunisia |
Tongiorgi,M. et al. Differentiation and spread of the Baltic Acritarch Province (Arenig-Llanvirn). |
1999 |
| details |
Llanvirnian |
Caradocian |
Saudi Arabia |
Molyneux,S.G. et al. Palynology of a problematic lower Palaeozoic lithofacies in the central Arabian Basin, Saudi Arabia. |
2000 |
| details |
Late Arenigian |
|
Portugal |
Cunha,T.Q.E. et al. Acritarchs of the "Xistos Com Phyllodocites" Formation, Barrancos Region, southeast of Portugal. |
1988 |
| details |
Late Arenigian |
Early Llanvirnian |
Pakistan |
Quintavalle,M. et al. Lower to Middle Ordovician acritarchs and chitinozoans from northern Karakorum Mountains, Pakistan. |
2000 |
| details |
Late Llanvirnian |
|
Nd |
Diez,M.D.C.R. et al. Range chart of selected Lower Paleozoic acritarch Taxa. 2: Index to Parts 1 and 2. |
1977 |
| details |
Nd |
|
Nd |
Molyneux,S.G. et al. Paleozoic phytoplankton. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |
| details |
Nd |
|
Nd |
Servais,T. The Ordovician Arkonia-Striatotheca acritarch Plexus |
1997 |
| details |
Middle Caradocian |
Middle Ashgillian |
Germany(Rostock) |
Vecoli,M. et al. Quantitative evaluation of microplankton palaeobiogeography in the Ordovician-Early Silurian of the northern Trans European Suture Zone: implications for the timing of the Avalonia-Baltica collision. |
2001 |
| details |
Ordovician |
|
Germany(Rhineland) |
Koch,L. The Family Cyclopygidae (Trilobita), from the Ordovician of the Ebbe and Remscheid Anticline, (Rhenish Massif, Germany). |
1999 |
| details |
Late Gedinnian |
Early Siegenian |
France(Ardennes) |
Steemans,P. The study of palynostratigraphy of the Devonian of western Europe. |
1986 |
| details |
Arenigian |
Llanvirnian |
France(Ardennes) |
Steemans,P. Paleogeography of the Eo-Devonian of Ardennes and Surrounding Regions |
1989 |