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Re: FW: Secco - length of hum. arm during the history

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  • Re: FW: Secco - length of hum. arm during the history

    >------ Forwarded Message
    >From: Secco Emanuele Lindo
    >Reply-To: Secco Emanuele Lindo
    >Date: Tue, 22 May 2001 17:57:57 +0200
    >To: BIOMCH-L@NIC.SURFNET.NL
    >Subject: Secco - length of hum. arm during the history
    >
    >Is there an article/book (or something similar) that reports the lengths
    >of arm and forearm of the man during the different age in the history ?
    >(for example: the lengths of the arm in the iron age was about ...., in
    >the middle age ...., about the homo sapiens ...)

    Dear Colleague(s):

    There is information of the sort that you seek, but it is perhaps more
    complex than you might wish. That is, although human evolution commonly is
    presented as a set of sequential developments (e.g. over the last six
    million years there has been an general increase in body size, with overall
    gains in stature, reduction in forelimb length, increase in hind limb
    length, etc.), much of the data are highly population specific, and the
    variations among population means are very great. To take just one example
    on which I have worked in detail (examinations of hundreds of skeletons and
    thousands of living subjects), in Peru over the period from ten thousand
    years ago to four thousand years ago, average stature decreased by about 20
    cm.; in the current period (living Peruvian populations), the generations
    of parents and their children can differ easily by 6 to 8 centimeters,
    depending on nutrition, altitude, disease experience, etc. Limb lengths do
    not scale up or down 1:1 as these changes occur; allometry is a very real
    phenomenon.

    The underlying principles (natural selection and shorter-term adaptative
    mechanisms such as developmental plasticity, etc), a lot of data, and
    roughly 60 pages of references can be found in a book that I completed last
    year:

    Eckhardt, Robert B. 2000. Human Paleobiology. Cambridge University Press.
    ISBN 0 521 45160 4

    After you have had a look at this work, if you have further specific
    questions, please feel free to contact me. All good wishes. RBE
    >
    >Thanks to the moderator for the possible acceptation of the question,
    >and thanks to the members for their possible suggestions,
    >
    > Emanuele Lindo
    >
    >--
    >
    >Secco Emanuele Lindo
    >Dip. Informatica e Sistemistica
    >UniversitÓ di Pavia
    >Via Ferrata, 1 - 27100 Pavia - Italia
    >cell. +39 (0)347 98.21.21.1
    >tel. +39 (0)382 50.53.52
    >fax. +39 (0)382 50.53.73
    >
    >Emanuele@bioing.unipv.it
    >
    >http://dis.unipv.it/
    >
    >"What is the formula for the journey to the ultimate meaning of reality?
    >
    >Living the real.
    >The only condition for being truly and faithfully religious is
    >to live always the real intensely, without negating or forgetting
    >anything."
    >
    >(Giussani L., The Religious Sense, McGill-Queen's University Press,
    >1997, p. 108)
    >
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    >
    >
    >------ End of Forwarded Message

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