Discarded ostrich shells offer schedule for the African ancestors

Discarded ostrich shells offer schedule for the African ancestors

Fragments of ostrich eggshells from the Ysterfontein 1 web site near Cape Town, Southern Africa. Researchers have determined that these eggshells are about 120,000 yrs . old, discarded by early Homo sapiens who lived across the coast and exploiting f d that is marine in addition to ostrich eggs. The scale club at lower right is 1 centimeter (0.4 ins). (Picture Elizabeth Niespolo)

Archeologists have learned plenty about our ancestors by rummaging through their trash heaps, that have pr f of their diet and population levels once the flora that are local fauna changed with time

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One typical home scrap in Africa — shells of ostrich eggs — is now helping unscramble the secret of whenever these modifications happened, providing a timeline for many of this earliest Homo sapiens who settled down seriously to utilize marine f d resources across the South African coastline more than 100,000 years back.

Geochronologists during the University of California, Berkeley, therefore the Berkeley Geochronology Center (BGC) have developed a technique that uses these discards that are ubiquitous properly date garbage dumps — politely called middens — which can be t old to be dated by radiocarbon or carbon-14 methods, the conventional for materials like bone tissue and lumber which can be more youthful than about 50,000 years. (more…)

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