hundreds of million years ago when continents were together in one piece as
pangea, homo sapiens did not exist yet. higher forms of mammals grew bigger and evolved on land only after the dinosaurs went extinct over 65 million years ago. hominids and primates evolved on the african continent (hundreds of million years well after pangea breakup) and only started migrating out of africa just over 50,000 years ago. through dna analysis, especially the y-chromosome, scientists are able to track human migration from africa to the ends of the earth in this all-in-one chart.
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