| details |
Arenigian |
|
Austria |
Reitz,E. et al. Palynological evidence for Lower Ordovician rocks (Tremadoc and Arenig) in the northern Greywacke zone (Eastern Alps) |
1992 |
| details |
Tremadocian |
Arenigian |
Argentina(La Rioja) |
Rubinstein,C.V. Ordovician acritarchs from northwestern Argentina: new insights into the biostratigraphy and paleonvironmental aspects of the Central Andean Basin and Famatina. (In: Ordovician from the Andes. G.L.Albanesi,M.S.Beresi,S.H.Peralta,editors) |
2003 |
| details |
Late Tremadocian |
Early Arenigian |
Argentina(Jujuy) |
Vergel,M.D.M. et al. Ordovician palynomorphs of Argentina: An integrated approach. (Aspects of the Ordovician System in Argentina.) |
2002 |
| details |
Arenigian |
Llanvirnian |
Algeria |
Vecoli,M. et al. Palynostratigraphy of Upper Cambrian-upper Ordovician intracratonic clastic sequences, North Africa. |
1999 |
| details |
Ashgillian |
|
Algeria |
Vecoli,M. et al. Palynostratigraphy of Upper Cambrian - Upper Ordovician intracratonic clastic sequences, North Africa. |
1998 |
| details |
Late Tremadocian |
Early Llanvirnian |
Africa |
Servais,T. et al. Recognition of the Trans-European Suture Zone (TESZ) by the palaeobiogeographical distribution pattern of early to middle Ordovician acritarchs. |
1997 |