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Author - title
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Year
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| details | Late Llandoverian | Wenlockian | USSR(Moscow) | Aristova,K.E. Palynological research of Silurian deposits in the Moscow Basin. | 1976 |
| details | Early Gedinnian | Spain | Cramer,F.H. A provisional note on the occurrence of microplankton and sporomorphs in the sedimentary rocks of the Lower Devonia in the Cantabrian Mountains | 1963 |