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Early Tremadocian |
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Algeria |
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1967 |
| original |
Proterozoic |
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China(Liaoning) |
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1979 |
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Proterozoic |
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China(Liaoning) |
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1979 |
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Early Ordovician |
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China(Hopei) |
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1981 |
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Late Devonian |
Middle Carboniferous |
China(Kiangsu) |
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1982 |
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Late Devonian |
Middle Carboniferous |
China(Anhwei) |
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1982 |
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China(Hopei) |
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1987 |
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Precambriam |
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India(Madhya Pradesh) |
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1996 |