Human evolution; earliest sapiens footprints (Introduction)

by David Turell , Tuesday, May 30, 2023, 22:03 (541 days ago) @ David Turell

In South Africa 153,000 years ago:

https://www.livescience.com/archaeology/153000-year-old-footprints-from-south-africa-ar...

"The record-breaking finding is one of many unearthed in Africa over the past few decades. Since the report of 3.66 million-year-old footprints at the site of Laetoli in Tanzania over 40 years ago, paleoanthropologists have found more than 100 walking trails preserved in rocks, ash and mud left by our hominin ancestors, the group that includes modern and extinct humans as well as our closely-related ancestors.

"Seven archaeological sites with tracks left by humans — called “ichnosites” — were discovered just east of the southern tip of the African continent, tens of miles inland from the ancient coast. In an article published April 25 in the journal Ichnos, an international team of researchers used optically-stimulated luminescence (OSL) to figure out when the impressions were made.

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"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.

"Footprint evidence can add a great deal to the archaeological record, according to the researchers, as it "can provide not just an indication of humans travelling across these surfaces as individuals or groups, but also evidence of some of the activities that they engaged in," the authors wrote in the study. In South Africa, early evidence for modern human behavior includes personal adornment such as jewelry, development of intricate stone tools, the use of abstract symbols, harvesting of shellfish, and coastal cave and rock-shelter sites."

Comment: Homo sapiens developed all over Africa making a big enough gene pool to allow a great diversity of development.