| details |
Frasnian |
|
Canada(NWT,Mackenzie) |
Yorath,C.J. et al. Cretaceous and Tertiary stratigraphy and paleogeography northern Interior Plains, District of MacKenzie. |
1981 |
| details |
Early Cretaceous |
|
Canada(NWT,Mackenzie) |
Yorath,C.J. et al. Cretaceous and Tertiary stratigraphy and paleogeography northern Interior Plains, District of MacKenzie. |
1981 |
| details |
Late Devonian |
|
Wyoming |
Sandberg,C.A. Measured sections of Devonian rocks in northern Wyoming |
1967 |
| details |
Middle Carboniferous |
|
Argentina(Salta) |
Azcuy,C.L. et al. Palynology of the Noroeste Basin of Argentina 1 characteristics of the Carboniferous associations. Problems and interpretation. (In: The Geology of the Province of San Luis) |
1981 |
| 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 |