| details |
Llanvirnian |
|
England(Shropshire) |
Millward,D. et al. Field and biostratigraphic evidence for an unconformity at the Base of the Eycott Volcanic Group in the English Lake District |
1992 |
| details |
Late Arenigian |
Early Llanvirnian |
England(Cumberland) |
Cooper,A.H. et al. The stratigraphy, correlation, provenance and palaeogeography of the Skiddaw Group (Ordovician) in the English Lake District |
1995 |
| details |
Late Cambrian |
|
England |
Volkova,N.A. Paleogeography of phytoplankton at Cambrian-Ordovician boundary |
1997 |
| details |
Late Tremadocian |
|
England |
Volkova,N.A. Paleogeography of phytoplankton at Cambrian-Ordovician boundary |
1997 |
| details |
Early Devonian |
Middle Devonian |
Egypt |
Kruchinina,N.V. et al. Paleozoic spore-pollen complexes of some regions of Egypt. |
1974 |
| details |
Acadian |
Early Llanvirnian |
Czechoslovakia |
VavrdovЎ,M. Phytoplankton communities of Cambrian and Ordovician age of Central Bohemia |
1982 |
| details |
Late Cambrian |
Ordovician |
Czechoslovakia |
Planderova,E. Review of biostratigraphical research on Low-Grade Metasediments in the West Carpathians. (In: Correlation of Prevariscan and Veriscan events of the Alpine-Mediterranean Mountain Belt. F.P.Sassi and M.Julivert, editors) |
1982 |
| details |
Early Ashgillian |
|
Czechoslovakia |
VavrdovЎ,M. Palaeozoic microplankton from central Bohemia. |
1966 |
| details |
Late Tremadocian |
|
China(Yunnan) |
Fang,X. Ordovician micropaleoplants in Kunming-Luguan Region, Yunnan Province and their stratigraphical significance. |
1985 |
| details |
Late Tremadocian |
Arenigian |
China(Szechwan) |
Xing,Y. Microplants and chitinozoans from the Lower Ordovician Dachengsi Formation of Emeishan, Sichun. |
1980 |
| details |
Late Cambrian |
|
China(Kirin) |
Volkova,N.A. Paleogeography of phytoplankton at Cambrian-Ordovician boundary |
1997 |
| details |
Early Ordovician |
|
China(Hupei) |
Yin,L.-M. New forms of acritarch from Early Ordovician sediments in Yichang, Hubei, China. |
1994 |
| details |
Tremadocian |
|
Canada(Nova Scotia) |
Keppie,J.D. Tremadocian acritarchs from Gillis Brook, Boisdale Hills, Cape Breton Island. |
1980 |
| details |
Late Cambrian |
Arenigian |
Canada(Newfoundland) |
Martin,F. Some aspects of Late Cambrian and Early Ordovician acritarchs. |
1982 |
| 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 |
Middle Cambrian |
Tremadocian |
Canada(Newfoundland) |
Parsons,M.G. et al. The biostratigraphic potential of Middle Cambrian to Tremadocian acritarchs; Modification of existing zonal schemes based on material from conception and Trinity Bays, Newfoundland and St.John, New Brunswick. |
1990 |
| details |
Late Cambrian |
|
Canada(Newfoundland) |
Volkova,N.A. Paleogeography of phytoplankton at Cambrian-Ordovician boundary |
1997 |