The 14,200-Year-Old Human DNA Found In Ancient Feces — And The Oregon Cave Discovery That Challenged Clovis
And, crucially for the Paisley story, coprolites can preserve DNA.
The cells that line the digestive tract are shed continuously during the passage of food, and some of these cells become incorporated into feces as it moves through the intestine.
These cells carry DNA, and in conditions of rapid desiccation and cool, stable burial, that DNA can be preserved for thousands of years — degraded, fragmented, but potentially extractable and analyzable using the methods of ancient DNA research.
The direct radiocarbon dating of coprolites is another significant advantage.
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