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Geolocation
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Author - title
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Year
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| details | Westphalian | Stephanian | USSR(Kazakh SSR) | Andreeva,E.M. et al. Spore and pollen complexes of Middle and Upper Paleozoic of the USSR. | 1960 |
| original | Westphalian | USSR(Ukrainian SSR) | Naumova,S.N. Spores and pollen of coals of the USSR. | 1939 | |
| original | Westphalian | USSR(Ukrainian SSR) | Lyuber,A.A. et al. Classification and stratigraphic value of spores of some Carboniferous Coal deposits in the USSR. | 1938 |