humanoriginsphotos.com, davidlbrill.com; David L. Brill Photography, email: brill@mindspring.com, phone: 770-722-1718

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    Au afarensis, 3.2 million years-old (Myr), Ethiopia

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    Au garhi, 2.5 Myr, Ethiopia

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    H erectus or ergaster, 1.75 Myr, Kenya

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    H erectus, 500,000, China

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    H sapiens idaltu, 160,000, Ethiopia

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    H sapiens sapiens, 100,000, Israel

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    Ar ramidus, “Ardi”, 4.4 Myr, Ethiopia

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    Au afarensis, “Lucy”, 3.2 Myr, Ethiopia

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    Reconstructed “Lucy” walks, 3.2 Myr, Ethiopia

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    H ergaster, 1.6 Myr, Kenya

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    H sapiens sapiens, modern, India