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Scientists discovered that droppings from an ancient Arctic ground squirrel hold animal DNA dating back roughly 700,000 years.
A 700,000‑year‑old fecal fossil of an Arctic ground squirrel was found in the lower reaches of a Yukon river, preserving ancient DNA.
Scientists discovered that droppings from an ancient Arctic ground squirrel hold animal DNA dating back roughly 700,000 years.
A 700,000‑year‑old fecal fossil of an Arctic ground squirrel was found in the lower reaches of a Yukon river, preserving ancient DNA.