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interests / sci.anthropology.paleo / Re: Age of the oldest known Homo sapiens, Omo I, from eastern Africa placed at 230 kya

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* Age of the oldest known Homo sapiens, Omo I, from eastern AfricaPrimum Sapienti
`- Re: Age of the oldest known Homo sapiens, Omo I, from eastern AfricaI Envy JTEM

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Age of the oldest known Homo sapiens, Omo I, from eastern Africa placed at 230 kya

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From: inval...@invalid.invalid (Primum Sapienti)
Newsgroups: sci.anthropology.paleo
Subject: Age of the oldest known Homo sapiens, Omo I, from eastern Africa
placed at 230 kya
Date: Thu, 24 Feb 2022 21:41:06 -0700
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 by: Primum Sapienti - Fri, 25 Feb 2022 04:41 UTC

Paper is public

https://www.nature.com/articles/s41586-021-04275-8.pdf

Efforts to date the oldest modern human fossils in eastern Africa, from
Omo-Kibish and Herto in Ethiopia, have drawn on a variety of chronometric
evidence, including 40Ar/39Ar ages of stratigraphically associated tuffs. The
ages that are generally reported for these fossils are around 197 thousand
years (kyr) for the Kibish Omo I, and around 160–155 kyr for the Herto
hominins. However, the stratigraphic relationships and tephra correlations
that underpin these estimates have been challenged. Here we report
geochemical analyses that link the Kamoya’s Hominid Site (KHS) Tuff9, which
conclusively overlies the member of the Omo-Kibish Formation that contains
Omo I, with a major explosive eruption of Shala volcano in the Main
Ethiopian Rift. By dating the proximal deposits of this eruption, we obtain a
new minimum age for the Omo fossils of 233 ± 22 kyr. Contrary to previous
arguments, we also show that the KHS Tuff does not correlate with another
widespread tephra layer, the Waidedo Vitric Tuff, and therefore cannot
anchor a minimum age for the Herto fossils. Shifting the age of the oldest
known Homo sapiens fossils in eastern Africa to before around 200 thousand
years ago is consistent with independent evidence for greater
antiquity of the modern human lineage.

Re: Age of the oldest known Homo sapiens, Omo I, from eastern Africa placed at 230 kya

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Subject: Re: Age of the oldest known Homo sapiens, Omo I, from eastern Africa
placed at 230 kya
From: jte...@gmail.com (I Envy JTEM)
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 by: I Envy JTEM - Fri, 25 Feb 2022 06:07 UTC

Primum Sapienti wrote:

> Paper is public

So isn't the response:

https://groups.google.com/g/sci.anthropology.paleo/c/gTGEbe9nVgI/m/oeXgbeIMAgAJ

Most notable is the fact that these aren't modern at all. Even the "more modern" skull
is very archaic.

-- --

https://jtem.tumblr.com/post/677103230364352512

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