| details |
Llandoverian |
Ludlovian |
Algeria |
Jardin©,S. et al. Stratigraphic distribution of acritarchs in the Palaeozoic of the Algerian Sahara. |
1974 |
| details |
Late Budnanian |
Lochkovian |
Algeria |
Magloire,L. Stratigraphical study by means of palynology of Silurian and Lower Devonian clay-sand deposits in the Wester Great Erg (Agerian Sahara). |
1967 |
| details |
Ludlovian |
Gedinnian |
France(Cotes du Nord) |
Lefort,J.P. et al. A study of the Pre-Mesozoic basement samples of the northern part of the Channel Islands Gulf. |
1974 |
| details |
Wenlockian |
Gedinnian |
Algeria |
Downie,C. Devonian acritarchs. (In: The Devonian System. M.R. House et al, editors) |
1979 |
| details |
Ludlovian |
Gedinnian |
Africa(Sahara) |
Cramer,F.H. Distribution of selected Silurian acritarchs an account of the palynostratigraphy and paleogeography of selected Silurian acritarch Taxa |
1970 |
| details |
Ludlovian |
Gedinnian |
Algeria |
Jardin©,S. Microplankton (Acritarchs), and the stratigraphic limits of the Upper Silurian to Upper Devonian. |
1972 |
| details |
Ludlovian |
Gedinnian |
Algeria |
Jardin©,S. et al. Stratigraphic distribution of acritarchs in the Palaeozoic of the Algerian Sahara. |
1974 |
| details |
Pridolian |
Gedinnian |
France(Manche) |
Rauscher,R. et al. Microfossils (Acritarches, chitinozoans, and spores) of beds next to the Silurian-Devonian boundary on the Cotentin Penninsula (Normandy). |
1975 |
| original |
Middle Siegenian |
Emsian |
Spain |
Cramer,F.H. Microplankton from three Palaeozoic formations in the Province of Leon, northwest Spain. |
1964 |
| details |
Ludlovian |
Emsian |
Algeria |
Jardin©,S. Microplankton (Acritarchs), and the stratigraphic limits of the Upper Silurian to Upper Devonian. |
1972 |
| details |
Ludlovian |
Emsian |
France |
Jardin©,S. Microplankton (Acritarchs), and the stratigraphic limits of the Upper Silurian to Upper Devonian. |
1972 |
| details |
Ludlovian |
Emsian |
Brazil |
Jardin©,S. Microplankton (Acritarchs), and the stratigraphic limits of the Upper Silurian to Upper Devonian. |
1972 |
| details |
Middle Siegenian |
Emsian |
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Gedinnian |
Eifelian |
Spain |
Jardin©,S. Microplankton (Acritarchs), and the stratigraphic limits of the Upper Silurian to Upper Devonian. |
1972 |
| details |
Ludlovian |
Early Emsian |
Spain |
Cramer,F.H. Distribution of selected Silurian acritarchs an account of the palynostratigraphy and paleogeography of selected Silurian acritarch Taxa |
1970 |
| details |
Late Wenlockian |
Early Eifelian |
Czechoslovakia(Slovensko) |
Planderova,E. et al. Stratigraphic position of carbonate formations in Crystalline Complexes of Tatricum and Veporicum. (In: Sedimentological problem of the Western Carpathians.50 years of teaching geology and paleontology in Slovakia. M.Sykora et al, editors) |
1990 |
| details |
Late Gothlandian |
Devonian |
Czechoslovakia |
Planderova,E. New knowledge on age of metasediments in the Dumbier Crystalline (Jasenie area, Central Slovakia Slovakia), Low Tatar Mountains. |
1986 |