A modern dating method has revealed the oldest Homo sapiens' footprints yet, placing bipedal humans in South Africa around 153,000 years ago.
Archaeologists in South Africa have discovered the footprints of Homo sapiens dating to 153,000 years ago, the oldest known tracks attributed to our species, a new study finds.
These South African ichnosites included four with hominin tracks, one with knee impressions, and four with “ammoglyphs” — a term denoting any pattern, not just footprints, made by humans that has been preserved over time. The researchers used OSL to date the South African track sites. This dating method works by estimating the time that has passed since grains of quartz or feldspar in or near the fossilized trackways were last exposed to sunlight. When surfaces that humans walked on were quickly buried, OSL can be used to figure out the date.
The discovery has"acted as a spur to continue our search for hominin tracks in deposits we know are even older," Helm said.
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