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Study finds famous Australian caves are up to 500,000 years older than we thought - and it could help explain a megafaunaÌýmystery

South Australia’s is one of the world’s best fossil sites, containing a record spanning more than half a million years. Among the remains preserved in layers of sand are the bones of many iconic Australian megafauna species that became extinct between 48,000 and 37,000 years ago.

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