| original |
Late Devonian |
Early Carboniferous |
USSR(Yakut ASSR) |
Mikhailova,T.E. et al. Palynologic characteristics of Devonian - Lower Carboniferous deposits of the Kempendyai structural prospecting Borhole Section. |
1966 |
| original |
Late Devonian |
Early Carboniferous |
USSR(Chelyabinskaya) |
Chibrikova,E.V. Floral assemblages of the Devonian-Carboniferous transition. (Concerning the age of the flora of the Solonchatka River.) |
1974 |
| original |
Tremadocian |
Arenigian |
Algeria |
Deunff,J. et al. Palynoplanktonic correlation in the Cambro-Ordovician of the Sahara |
1961 |
| original |
Early Carboniferous |
|
USSR(Urals) |
Chibrikova,E.V. Stratigraphy of Devonian and older Paleozoic deposits of the Southern Urals and the Pre-Urals (According to plant Microfssils). |
1977 |