| original |
Givetian |
|
Canada(NWT,Franklin) |
Owens,B. Miospores from the Middle and Early Upper Devonian rocks of the Western Queen Elizabeth Islands, Arctic Archipelago. |
1971 |
| details |
Givetian |
Frasnian |
Canada(Arctic) |
Chi,B.I. et al. Biostratigraphy and taxonomy of Devonian Imegaspores, Arctic, Canada. |
1976 |
| details |
Late Givetian |
Middle Frasnian |
Canada(Arctic) |
Whiteley,M.J. Givetian and Frasnian spores from the Key Point Well, Parry Islands, Arctic Canada. |
1980 |
| details |
Nd |
|
China(Yunnan) |
Gao,L. Devonian spore assemblages of China |
1981 |
| details |
Frasnian |
Famennian |
Canada(NWT,Mackenzie) |
Hills,L.V. et al. Megaspores, Imperial Formation (Upper Devonian) Mountain River, District of MacKenzie |
1984 |
| details |
Eifelian |
|
Colombia |
PrŠ¶ssl,K.F. Palaeopalynolgy Part I:Preperation and methods |
1997 |