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Mammalia
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Oligocene
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Mesozoic
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Lower Cretaceous
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Jurassic
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Permian
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Changxing Formation (1)
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Silurian
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Woodford Shale (1)
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rutile (2)
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illite (4)
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sulfates
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Primary terms
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bacteria
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Bacillus
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Canada
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carbon
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C-13/C-12 (10)
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Cenozoic
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Quaternary
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Stone Age
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Tertiary
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Paleogene
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Oligocene
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