original |
Middle Frasnian |
|
Canada(NWT,Mackenzie) |
McGregor,D.C. et al. Devonian spores of eastern and northern Canada. |
1966 |
original |
Middle Frasnian |
Late Frasnian |
Maryland |
Curry,R.P. Miospores from the Upper Devonian (Frasnian) Greenland Gap Group, Allegheny Front, Maryland, West Virginia and Virginia, USA. |
1975 |
original |
Middle Frasnian |
Late Frasnian |
West Virginia |
Curry,R.P. Miospores from the Upper Devonian (Frasnian) Greenland Gap Group, Allegheny Front, Maryland, West Virginia and Virginia, USA. |
1975 |
original |
Middle Frasnian |
Late Frasnian |
Virginia |
Curry,R.P. Miospores from the Upper Devonian (Frasnian) Greenland Gap Group, Allegheny Front, Maryland, West Virginia and Virginia, USA. |
1975 |