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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 | Famennian | USSR(Altai Kray) | Mikunov,M.F. et al. Constitution of Devonian deposits of the Rubtsov Subzone of Mining Altai | 1984 | |
| details | Frasnian | USSR | Potonie,R. Synopsis of the genera of the sporae dispersae. Part 2 | 1958 |