| 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 | Frasnian | France(Boulonnais) | Taugourdeau-Lantz,J. The presents of sporocyste from the Frasnian of Boulonnais | 1965 | |
| details | Frasnian | Tournaisian | China | Gao,L. Late Devonian and Early Carboniferous miospore zonations and the boundary of Devonian - Carboniferous in China. | 1989 |