| original |
Middle Ordovician |
|
Canada(Quebec) |
Staplin,F.L. et al. Evaluation of some acritarchous Hystrichosphere genera. |
1965 |
| details |
Oandu |
Rakvere |
Lithuania |
Pa?keviciene,L. Taxonomical composition and distribution of acritarchs in the deposits of Oandu Ravere Regional Stages of the Middle Lithuanian Depression. |
2001 |
| details |
Llandeilian |
Caradocian |
Iran |
Reitz,E. et al. Ordovician acritarchs from the Banestan Kerman area, Central Iran Paleobiogeographical evidence for a Warm Water environment |
1995 |
| details |
Soudleyan |
Ashgillian |
Worldwide |
Molyneux,S.G. et al. Paleozoic phytoplankton. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |
| details |
Arenigian |
Ashgillian |
China(Hupei) |
Tongiorgi,M. et al. Arenigian acritarchs from the Daping section (Yangtze Gorges area, Hubei Province, southern China) and their palaeogeographic significance. |
1995 |
| details |
Arenigian |
|
Pakistan |
Tongiorgi,M. et al. Palynological dating (Arenig) of the sedimentary sequence overlying the Ishkarwaz Granite (Upper Yarkhun Valley, Chitral, Pakistan). |
1994 |
| details |
Caradocian |
Ashgillian |
E.Germany(Karl Marx) |
Heuse,T. Upper Ordovician acritarchs from the Frankenberger Zwischengebirge (Saxony) eastern Germany |
1994 |
| details |
Caradocian |
|
England(Kent) |
Molyneux,S.G. The contribution of Palaeontological data to an understanding of the Early Palaeozoic framework of eastern England |
1991 |
| details |
Caradocian |
Ashgillian |
Turkey |
Steemans,P. et al. Ordovician and Silurian cryptospores and miospores from southeastern Turkey. |
1996 |
| details |
Late Caradocian |
|
Saudi Arabia |
Jachowicz,M. Ordovician acritarch assemblages form Central and Northwestern Saudi Arabia. (In: Palaeozoic Palynostratigraphy of the Kingdom of Saudi Arabia. B.Owens et al, editors) |
1995 |
| details |
Arenigian |
Early Wenlockian |
USSR(Pre-Baltic) |
Umnova,N.I. Silurian and Ordovician acritarch assemblages from the northern and western parts of the Russian Platform. |
1974 |
| details |
Arenigian |
Early Wenlockian |
USSR(Russian Platform) |
Umnova,N.I. Silurian and Ordovician acritarch assemblages from the northern and western parts of the Russian Platform. |
1974 |
| details |
Middle Ordovician |
|
Finland |
Tynni,R. Ordovician hystrichospheres and chitinozoans in limestone from the Bothnian Sea. |
1975 |
| details |
Rawtheyan |
Aeronian |
Norway |
Smelror,M. et al. Upper Ordovician-Lower Silurian strata and biota from offshore South Norway |
1997 |
| details |
Richmondian |
|
Missouri |
Wicander,R. et al. Stratigraphy and paleogeographic significance of an Upper Ordovician acritarch flora from the Maquoketa Shale, Northeastern Missouri, USA |
1999 |
| details |
Arenigian |
Early Llanvirnian |
Pakistan |
Quintavalle,M. et al. Lower to Middle Ordovician acritarchs and chitinozoans from northern Karakorum Mountains, Pakistan. |
2000 |
| details |
Rakvere |
|
Lithuania |
Pa?keviciene,L. Taxonomical composition and distribution of acritarchs in the deposits of Oandu Ravere Regional Stages of the Middle Lithuanian Depression. |
2001 |