| details |
Late Givetian |
Early Frasnian |
New York |
Traverse,A. et al. Palynolostratigraphy of the Catskill and part of the Chemung Magnafacies, Southern New York State, USA. |
1994 |
| original |
Siegenian |
|
France(Ardennes) |
Steemans,P. The study of palynostratigraphy of the Devonian of western Europe. |
1986 |
| details |
Middle Devonian |
|
Colombia |
PrŠ¶ssl,K.F. et al. The age of the Formation Amoya, Upper Magdalena Valley: Another Piece in the Paleozoic stratigraphic Puzzle of Colombia |
1995 |
| original |
Early Emsian |
Late Emsian |
Canada(Ontario) |
McGregor,D.C. et al. Upper Silurian? to Middle Devonian spores of the Moose River Basin, Ontario. |
1976 |