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  • Human anthropophagy 1.45 Ma?

    From Pandora@21:1/5 to All on Mon Jun 26 15:54:25 2023
    Early Pleistocene cut marked hominin fossil from Koobi Fora, Kenya

    Abstract

    Identification of butchery marks on hominin fossils from the early
    Pleistocene is rare. Our taphonomic investigation of published hominin
    fossils from the Turkana region of Kenya revealed likely cut marks on
    KNM-ER 741, a ~ 1.45 Ma proximal hominin left tibia shaft found in the
    Okote Member of the Koobi Fora Formation. An impression of the marks
    was created with dental molding material and scanned with a Nanovea
    white-light confocal profilometer, and the resulting 3-D models were
    measured and compared with an actualistic database of 898 individual
    tooth, butchery, and trample marks created through controlled
    experiments. This comparison confirms the presence of multiple ancient
    cut marks that are consistent with those produced experimentally.
    These are to our knowledge the first (and to date only) cut marks
    identified on an early Pleistocene postcranial hominin fossil.

    Open access:
    https://www.nature.com/articles/s41598-023-35702-7

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  • From JTEM is so reasonable@21:1/5 to Pandora on Mon Jun 26 10:43:03 2023
    Pandora wrote:

    Early Pleistocene cut marked hominin fossil from Koobi Fora, Kenya

    It's actually quite consistent with the model I've been advancing, where earlier groups to have peeled off from the Waterside population were
    preyed upon by later groups... at least once they could no longer be
    recognized as potential mating partners.

    It's also consistent with the already well established cannibalism. It
    has been argued here in the past that cannibalism was likely more
    common, not less so, as a dead member or the community
    represented a free sack of protein.

    But it's also not solidly established. In the end "Cut Marks" are
    scrapes left by rocks. So where there are rocks there is always the
    potential of scratches that look exactly like "cut marks."



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    https://jtem.tumblr.com/post/721153190279643136

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