Perfectly preserved cave lion may be coming back after 50,000-year extinction nap

However we do have DNA samples taken from species that went extinct much more recently, like the West African Black Rhinoceros and the Pyrenean Ibex. I’d have more confidence that scientists were close to reviving cave lions and mammoths if they started with something that went extinct 10 or 20 years ago as a proof-of-concept.

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