| details |
Llandoverian |
Wenlockian |
England(Shropshire) |
Hill,P.J. A review of Cymbosphaeridium pilar and comparison with Multiplicisphaeridium pachymurum, sp.nov., from the Llandovery and Wenlockof Shropshire, Great Britain. |
1978 |
| details |
Early Tremadocian |
|
England |
Volkova,N.A. Paleogeography of phytoplankton at Cambrian-Ordovician boundary |
1997 |
| details |
Late Ordovician |
|
Czechoslovakia |
VavrdovЎ,M. Phytoplankton communities of Cambrian and Ordovician age of Central Bohemia |
1982 |
| details |
Late Devonian |
Early Carboniferous |
China(Tibet) |
Gao,L. Late Devonian and Early Carboniferous acritarchs from Nyalam County, Xizang, (Tibet), China. |
1984 |
| details |
Ordovician |
Silurian |
China(Tibet) |
Xing,Y. A discovery of micropalaeophyta, chitinozoa and scolecodonts from Ordovician and Silurian in Keping, Xinjiang. |
1986 |
| details |
Early Ordovician |
|
China(Hupei) |
Yin,L.-M. New forms of acritarch from Early Ordovician sediments in Yichang, Hubei, China. |
1994 |
| details |
Silurian |
|
Canada(Quebec) |
Duffield,S.L. Biostratigraphy and taxonomy of Lower Silurian acritarchs from Anticosti Island,Quebec. |
1981 |
| details |
Middle Frasnian |
|
Canada(Quebec) |
Cloutier,R. et al. Biostratigraphy of the Upper Devonian Escuminac Formation eastern Quebec, Canada: A comparative study based on miospores and Fishes |
1996 |
| details |
Early Tremadocian |
|
Canada(Newfoundland) |
Volkova,N.A. Paleogeography of phytoplankton at Cambrian-Ordovician boundary |
1997 |
| details |
Llandoverian |
|
Canada(Anticosti Island) |
Duffield,S.L. et al. Acritarch biostratigraphy of Upper Ordovician-Lower Silurian strata of Anticosti Island, Quebec and implications for intracontinental correlation. |
1981 |
| original |
Late Devonian |
|
Canada(Alberta) |
Staplin,F.L. Reef-Controled distribution of Devonian microplankton in Alberta. |
1961 |
| details |
Late Aptian |
|
Brazil(Piaui) |
Brito,I.M. et al. Reworking of Devonian to the Early Cretaceous from the Araripe Basin. |
1995 |
| details |
Late Aptian |
|
Brazil(Pernambuco) |
Brito,I.M. et al. Reworking of Devonian to the Early Cretaceous from the Araripe Basin. |
1995 |
| details |
Late Aptian |
|
Brazil(Ceara) |
Brito,I.M. et al. Reworking of Devonian to the Early Cretaceous from the Araripe Basin. |
1995 |
| details |
Late Aptian |
|
Brazil(Bahia) |
Brito,I.M. et al. Reworking of Devonian to the Early Cretaceous from the Araripe Basin. |
1995 |
| details |
Early Llanvirnian |
|
Belgium |
Servais,T. et al. Lower Llanvirn, (Ordovician), graptolites and acritarchs from the Assise de Huy Bande de Sambre-et-Meuse, Belgium. |
1993 |
| details |
Middle Frasnian |
Late Frasnian |
Belgium |
Vanguestaine,M. et al. Palynofacies in three near to off-reef shaly deposits from Late Middle to Late Frasnian age (Upper Devonian) at Neuville and Frasnees (Dinant Synclinorium, Belgium) |
1996 |