| original |
Givetian |
|
Spitsbergen |
Allen,K.C. Lower and Middle Devonian spores of North and Central Vestspitsbergen |
1965 |
| details |
Emsian |
Eifelian |
Canada(Gaspe Area) |
McGregor,D.C. et al. Devonian spores of eastern and northern Canada. |
1966 |
| details |
Givetian |
|
Spitsbergen |
Allen,K.C. Spore assemblages and their stratigraphical application in the Lower and Middle Devonian of North and Central Vestspitbergen |
1967 |
| details |
Frasnian |
|
Canada(Yukon) |
Norford,B.S. et al. Biostratigraphic determinations of fossils from the subsurface of the Yukon Territory and the Districts of MacKenzie Andfranklin |
1970 |
| details |
Givetian |
Frasnian |
England |
Mortimer,M.G. et al. The palynology of the Concealed Devonian rocks of Southern England. |
1972 |
| details |
Early Devonian |
Middle Devonian |
Spitsbergen |
Allen,K.C. Further information on the Lower and Middle Devonian spores from Dickson Land, Spitsbergen. |
1973 |
| details |
Early Devonian |
|
USSR(Siberia) |
Kasperkevich,E.P. The age of the Kurei Formation, (Devonian, Northwest Siberian Platform. |
1978 |
| details |
Late Eifelian |
Early Givetian |
Canada(Arctic) |
Mayr,U. Stratigraphy and correlation of Lower Paleozoic Formations, subsurface of Bathurst Island and adjacent smaller islands, Canadian Arctic Archipelago. |
1980 |
| details |
Givetian |
|
Spitsbergen |
McGregor,D.C. et al. Middle Devonian miospores from the Cape de Bray, Weatherall, and Hecla Bay Formations of northeastern Melville Islad, Canadian Arctic. |
1982 |
| details |
Eifelian |
|
W.Germany(Rhineland) |
Loboziak,S. et al. Miospores, the Lemurata and Triangulatus levels and their faunal Indices near the Eifelian/ Givetian boundary in the Eifel (F.R.G.) |
1991 |