| details |
Early Devonian |
|
China(Kweichow) |
Kao,L. et al. Early and Middle Devonian spore assemblages from Tushan and Duyun of Kweichow and their stratigraphical significane. |
1975 |
| details |
Middle Frasnian |
Late Frasnian |
Maryland |
Curry,R.P. Upper Devonian miospores from the Greenland Gap Group, Allegheny Front, Eastern United States. |
1973 |
| details |
Frasnian |
|
USSR(Russian Platform) |
Kao,L. et al. Early and Middle Devonian spore assemblages from Tushan and Duyun of Kweichow and their stratigraphical significane. |
1975 |