| original |
Early Cambrian |
Middle Cambrian |
Canada(Newfoundland) |
Martin,F. et al. Late Early Cambrian and Early Middle Cambrian acritarchs from Manuels River, Eastern Newfoundland. |
1983 |
| details |
Middle Cambrian |
|
Canada(Newfoundland) |
Martin,F. et al. Middle Cambrian acritarchs from the Chamberlains Brook and Manuals River Formations at Random Island, Eastern Newfoundland. |
1984 |
| details |
Middle Cambrian |
Late Cambrian |
Canada(Newfoundland) |
Martin,F. et al. Middle and Upper Cambrian acritarch and Trilobite zonation at Manuels River and Random Island, eastern Newfoundland |
1988 |
| details |
Middle Cambrian |
|
Sweden |
Bagnoli,G. et al. Acritarchs and conodonts from the Cambro-Ordovician Furuhall, (Kopingsklint) Section (Oland, Sweden). |
1988 |
| details |
Middle Cambrian |
|
Czechoslovakia |
Fatka,O. Acritarch assemblage in the Onymagnostus hybridus zone, (Jince Formation, Middle Cambrian, Czechoslovakia). |
1989 |
| details |
Early Cambrian |
|
USSR(Lithuanian SSR) |
Yankauskas,T.V. Biostratigraphy of the Lower and Middle Cambrian boundary Beds of Lithuania. |
1990 |
| details |
Middle Cambrian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Cambrian |
Tremadocian |
Belgium |
Vanguestaine,M. Acritarch datation of the deepest Cambro-Tremadocian strata of the Lessines borehole (Southern Border of the Brabant Massif, Belgium) |
1991 |
| details |
Early Cambrian |
|
USSR(Belorussian SSR) |
Yankauskas,T.V. Revision of some Cambrian acritarch assemblages of Belarus |
1993 |
| details |
Early Cambrian |
Middle Cambrian |
USSR(Baltic) |
Yankauskas,T.V. Lower and Middle Cambrian acritarch-Based biozonation of the North western part of the East European Platform |
1993 |
| details |
Cambrian |
|
Nd |
Martin,F. Acritarchs: A review |
1993 |
| details |
Early Cambrian |
Middle Cambrian |
Wales(Gwynedd) |
Young,T. et al. Cambrian stratigraphy of St.Tudwal's Peninsula, Gwynedd, Northwest Wales |
1994 |
| details |
Middle Cambrian |
|
Canada(Newfoundland) |
Molyneux,S.G. et al. Paleozoic phytoplankton. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |