| details |
Caradocian |
|
Scotland(Dumfries) |
Zalasiewicz,J. et al. Submission of Hartfell Score (south Scotland) as a GSSP for the base of the middle stage of the Upper Ordovician Series. |
2004 |
| details |
Ashgillian |
|
Canada(Arctic) |
Achab,A. et al. The Laurentian Ordovician chitinozoan zonation: some modifications and some remaining problems. (In: Ordovician from the Andes. G.L.Albanesi,M.S.Beresi,S.H.Peralta,editors) |
2003 |
| details |
Ashgillian |
|
Canada(Newfoundland) |
Achab,A. et al. The Laurentian Ordovician chitinozoan zonation: some modifications and some remaining problems. (In: Ordovician from the Andes. G.L.Albanesi,M.S.Beresi,S.H.Peralta,editors) |
2003 |
| details |
Ashgillian |
|
Canada(Quebec) |
Achab,A. et al. The Laurentian Ordovician chitinozoan zonation: some modifications and some remaining problems. (In: Ordovician from the Andes. G.L.Albanesi,M.S.Beresi,S.H.Peralta,editors) |
2003 |
| details |
Late Arenigian |
Early Llanvirnian |
Czech Republic |
Fatka,O. Organic-walled microfossils (Chitinozoa and Acritarcha) from Praha - Cervenн vrch Hill (SЎrka Formation, Middle Ordovician, Prague Basin) |
2003 |
| details |
Late Arenigian |
Early Llanvirnian |
Czech Republic |
Kraft,P. et al. Fossil assemblages from the Middle Ordovician ?Ўrka Formation at Praha - Cervenн vrch Hill (Prague Basin, Barrandian area). |
2003 |
| details |
Llandoverian |
|
Poland |
Masiak,M. et al. Ordovician-Silurian boundary in the Bardo Syncline, Holy Cross Mountains, Poland-new data on fossil assemblages and sedimentary succession. |
2003 |
| details |
Late Caradocian |
Middle Ashgillian |
Iran |
Ghavidel-Syooki,M. et al. Biostratigraphy and palaeogeography of Late Ordovician chitinozoans from the northeastern Alborz Range, Iran |
2002 |
| details |
Late Llanvirnian |
|
Argentina(San Juan) |
Vergel,M.D.M. et al. Ordovician palynomorphs of Argentina: An integrated approach. (Aspects of the Ordovician System in Argentina.) |
2002 |
| details |
Early Llanvirnian |
Early Caradocian |
Argentina(San Juan) |
Vergel,M.D.M. et al. Ordovician palynomorphs of Argentina: An integrated approach. (Aspects of the Ordovician System in Argentina.) |
2002 |
| details |
Middle Caradocian |
Middle Ashgillian |
Baltic Sea |
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 |
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 |
Llanvirnian |
|
Saudi Arabia |
Paris,F. et al. Ordovician chitinozoans from central Saudi Arabia. |
2000 |
| details |
Llanvirnian |
Late Telychian |
Paraguay |
Grahn,Y. et al. Silurian and Lower Devonian chitinoan biostratigraphy of the Parana Basin in Brazil and Paraguay. |
2000 |
| details |
Late Ordovician |
|
Sweden |
Bergstrжm,S.M. et al. A proposed global boundary stratotype for the base of the Upper Series of the Ordovician System: The FҐgelsҐng section, Scania, southern Sweden. |
2000 |
| details |
Middle Caradocian |
|
Belgium |
Samuelsson,J. et al. Ordovician chitinozoan biozonation of the Brabant Massif, Belgium. |
2000 |
| details |
Early Llanvirnian |
|
Germany(Rostock) |
Samuelsson,J. et al. Chitinozoan faunas from the Rugen Ordovician (110gen 5/66 and Binz 1/73 wells), northeast Germany. |
2000 |