Porter Shale
The Porter Shale is a geologic formation in Washington (state). It preserves fossils dating back to the Paleogene period.
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Porter Shale
The Porter Shale is a geologic formation in Washington (state). It preserves fossils dating back to the Paleogene period.
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The Porter Shale is a geologic ...... back to the Paleogene period.
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43,266,534
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659,692,312
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The Porter Shale is a geologic ...... back to the Paleogene period.
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Porter Shale
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