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Author - title
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| details | Frasnian | Early Famennian | USSR(Belorussian SSR) | Kedo,G.I. et al. Palynology characteristics of the Intersaliferous stratum of the Khobninsk Dome. (In: Palynological investigations in Belorussia and other Regions of the USSR. V.K.Golubzov et al, editors) | 1971 |
| details | Early Frasnian | USSR(Urals) | Fomina,L.S. Spore assemblages of terrigene Devonian in northern areas of the Volga-Urals Region. (In: Paleopalynoligical Method Applied in Stratigraphy. S.R.Samoilovich, editor) | 1968 |