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Middle Frasnian |
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Missouri |
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1968 |
original |
Gedinnian |
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Europe |
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Middle Wenlockian |
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USSR(Estonian SSR) |
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Late Llandoverian |
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USSR(Estonian SSR) |
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1984 |
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Givetian |
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Kentucky |
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1985 |
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Givetian |
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New York |
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1986 |
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Emsian |
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Algeria |
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1988 |
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Late Frasnian |
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Libya |
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1989 |
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Late Frasnian |
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Libya |
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1989 |
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Wenlockian |
Ludlovian |
USSR(Estonian SSR) |
Nestor,V. et al. Dating of the Wenlock Carbonate sequences in Estonian and stratigraphicheskie Pereryvy |
1990 |
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Wenlockian |
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Wales(Powys) |
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1999 |
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Grahn,Y. et al. Middle and Upper Devonian Chitinozoan biostratigraphy of the Parana Basin in Brazil and Paraguay. |
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Paraguay |
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2002 |