| original |
Carboniferous |
|
USSR(Siberia) |
Lyuber,A.A. Correlation by means of spores of coal bearing Upper Paleozoic deposits of the Kuznetsk and Minussinsk Basins |
1939 |
| original |
Carboniferous |
|
USSR(Khakass A.O.) |
Lyuber,A.A. Correlation by means of spores of coal bearing Upper Paleozoic deposits of the Kuznetsk and Minussinsk Basins |
1939 |
| details |
Permian |
|
USSR(Khakass A.O.) |
Lyuber,A.A. Correlation by means of spores of coal bearing Upper Paleozoic deposits of the Kuznetsk and Minussinsk Basins |
1939 |
| details |
Late Permian |
|
USSR(Komi ASSR) |
Chalyshev,V.I. et al. The boundary of the Permian and Triassic in the Red-Colored deposits of northern Priural |
1965 |