Dictionary of Human Evolution and Biology

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Long Journey Hypothesis

Argument to explain the one million year fossil gap between the Dmanisi Homo ergaster population living in the Republic of Georgia from 1.7 mya and later humans in Spain at 780 kya. The long journey posits that humans left Africa around 2 mya, but were prevented from entering western Europe due to climate; consequently, they traveled east, reaching China by 1.9 mya and Indonesia by 1.8 mya. Subsequent migrations from Africa turned north and west when climate permitted.

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