| details |
Silurian |
Devonian |
France(Cotes du Nord) |
Deunff,J. et al. The presence of a paleoplankton of acritarchs, chitinozoans, spores, scolecodonts and radiolarians from the Siluro - Devonian Formations of the Plourach Region, (Cotes-du-Nord). |
1971 |
| details |
Ludlovian |
|
Algeria |
Jardin©,S. et al. Stratigraphic distribution of acritarchs in the Palaeozoic of the Algerian Sahara. |
1974 |
| details |
Wenlockian |
Ludlovian |
Algeria |
Downie,C. Devonian acritarchs. (In: The Devonian System. M.R. House et al, editors) |
1979 |
| details |
Downtonian |
|
Libya |
Richardson,J.B. et al. Acritarchs, miospores and correlation of the Ludlovian - Downtonian and Silurian - Devonian boundaries. |
1981 |
| details |
Early Devonian |
|
Libya |
Al-Ameri,T.K. Observations of the wallstructure and excystment mechanisum of acritarchs. |
1986 |
| details |
Late Ludfordian |
|
Sweden |
Le H©riss©,A. Acritarchs and cysts of Prasinophycean algae of the Silurian of Gotland, Sweden. |
1989 |
| details |
Ludlovian |
Early Gedinnian |
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Late Ludlovian |
Middle Pridolian |
Libya |
Le H©riss©,A. Paleoecology, biostratigraphy and biogeography of late Silurian to early Devonian acritarchs and prasinophycean phycomata in well A161, Western Libya, North Africa |
2002 |
| details |
Late Ludlovian |
Early Gedinnian |
Africa(Sahara) |
Le H©riss©,A. Paleoecology, biostratigraphy and biogeography of late Silurian to early Devonian acritarchs and prasinophycean phycomata in well A161, Western Libya, North Africa |
2002 |