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Study: Cave Lions were Distinct Species that Occasionally Bred with Ancestors of Today’s Lions

The extinct Eurasian cave lion (Panthera spelaea) and today’s African and Asian lions (Panthera leo) belong to separate evolutionary lineages that diverged roughly 1.7 million years ago -- far earlier than previously thought, according to an analysis of 12 cave lion genomes spanning more than 100,000 years.

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