| details |
Early Eifelian |
Givetian |
China(Heilungkiang) |
Ouyang,S. Microfossils from the Devonian Heitai Formation of Mishan County, Heilungjiang Province. |
1984 |
| details |
Eifelian |
Givetian |
China(Heilungkiang) |
Su,Y. et al. A second time study of the Devonian "Heitai Formation" in the type locality of eastern Heilongjiang Province |
1983 |
| original |
Middle Devonian |
|
China(Kweichow) |
Kao,L. et al. Early and Middle Devonian spore assemblages from Tushan and Duyun of Kweichow and their stratigraphical significane. |
1975 |