Red social de Arqueologos e Historiadores
Tools such as two-sided spearheads along with engraved objects that are about 71,000 years old are among many ancient human artifacts that researchers say signify high-level communication.
The geographic distribution of these objects at nine sites in South Africa suggests innovation—not climate change—may have triggered early humans' migration out of Africa, researchers report in an October 2008 study.
Photograph courtesy Chris Henshilwood
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Arqueologia, Historia Antigua y Medieval - Terrae Antiqvae
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