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Upper Carboniferous (2)
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Taiyuan Formation (2)
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Precambrian
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Paleoproterozoic
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Vadito Group (1)
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Primary terms
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carbon
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Tertiary
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Miocene
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lower Miocene
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middle Miocene
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upper Miocene
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Ringold Formation (1)
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Paleogene
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Eocene
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Annot Sandstone (2)
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lower Eocene
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middle Eocene (1)
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Hanna Formation (1)
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lower Oligocene (2)
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Paleocene
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Paleocene-Eocene Thermal Maximum (1)
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