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13-Apr-2020 18:11

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And the discovery of fossil DNA hundreds of meters down confirms the younger age.

How can DNA that originated at the sea surface persist at great depths?

One summary paper available on the project website says, The sediments are generally highly bioturbated.

However, fine-scale lamination preserving alternations between millimeter scale laminae of biogenic and terrigenous material are also present at several of the drilled sites.

Possibly the DNA came from recent sources, like burrowing bacteria.

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The age assignment process begins with age ranges from printed pages. Biostratigraphy rests on assuming an evolutionary past—the main flaw with biostratigraphy.The Bering Sea DNA they discovered joins prior finds that similarly challenge deep time.