| details |
Carboniferous |
|
USSR(Yakut ASSR) |
Kharkiv,A.D. Recent data on the age of Kimberlite Pipes of the Doldyn-Alakit Region |
1967 |
| details |
Late Famennian |
|
USSR(Ukrainian SSR) |
Raznitsyn,V.A. et al. Devonian deposits of the Zachepilovsk-Bogatoisk Region of the Southern Border zone of the Dnieper-Donets Depression |
1980 |
| original |
Allegheny |
|
Pennsylvania |
Frederiksen,N.O. Sporomorphs of the Brookville Seam near Brookville, Pennsylvania. |
1961 |
| original |
Early Famennian |
|
USSR(Russian Platform) |
Naumova,S.N. Spore-pollen complexes of the Upper Devonian of the Russian Platform and their significance for stratigraphy |
1953 |