| link
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From
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To
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Geolocation
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Author - title
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Year
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| details | Tournaisian | Visean | USSR(European) | Byvsheva,T.V. Spore-pollen assemblages of the terrigenous Part of the Lower Carboniferous of the Volga-Urals Region | 1960 |
| details | Westphalian A | Westphalian C | USSR(Rostov) | Egorov,A.I. et al. Spores and pollen of Middle Carboniferous deposits of the Don Basin. | 1971 |