details |
Middle Frasnian |
|
Canada(Quebec) |
Cloutier,R. et al. Biostratigraphy of the Upper Devonian Escuminac Formation eastern Quebec, Canada: A comparative study based on miospores and Fishes |
1996 |
details |
Middle Frasnian |
Late Frasnian |
Canada(Arctic) |
Hill,S.A. et al. Ellesmeris sphenopteroides, gen.et sp.nov., a new Zygopterid fern from the Upper Devonian (Frasnian) of Ellesmere, NWT, Arctic Canada. |
1997 |
details |
Nd |
|
Canada(Arctic) |
Richardson,J.B. et al. Silurian and Devonian spore zones of the Old Red Sandstone continent and adjacent regions. |
1986 |