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Re: RE: [SACC-L] a question about chins

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  • Renee Garcia
    I thought the question was why it developed in the first place and the evolutionary significance. Certainly, there is a biomechanic use for it but in terms of
    Message 1 of 13 , Oct 13, 2006
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      I thought the question was why it developed in the first place and the
      evolutionary significance. Certainly, there is a biomechanic use for it
      but in terms of chewing force, neandertals and other hominids were much
      more efficient "chewers" than modern humans. The temporal muscles were
      significantly more developed than the puny versions we have. I'm not
      certain that the chin evolved based on a biological necessity, again
      the effectiveness in earlier species was there. We can certainly
      explain the morphology of this area biomechanically, but considering
      the morphologies that were occuring in other hominids of this period,
      from a paleoanthropological perspective, the appearance of this derived
      feature was rather sudden.

      I remember someone saying at a conference on neandertals in Japan years
      ago that the "Devil was in the mandible" in reference to its appearance
      in modern humans.

      A good case study that Darwin would have been interested in surely. Why
      did it appear? A small face, H. floresiensis has a small face, but no
      chin. Necessity? What in the environment of amHs could have made this
      protrusion (of varying degrees inter and intrapopulationally) become
      dominant in our species?


      Renee

      Renee Garcia
      Department of Anthropology
      Saddleback College

      ----- Original Message -----
      From: "Popplestone, Ann" <ann.popplestone@...>
      Date: Thursday, October 12, 2006 3:38 pm
      Subject: RE: [SACC-L] a question about chins

      > I was under the impression that the chin was really just the
      > simian arch
      > moved to the outside of the jaw as the face became smaller. It is a
      > buttress to distribute chewing forces. Anybody out there with more
      > up-to-date biomechanics expertise?
      >
      >
      >
      > Ann Popplestone AAB, BA, MA
      >
      > CCC Metro TLC
      >
      >
      >
      > 216-987-3584
      >
      > FAX:707-924-2471
      >
      > ________________________________
      >
      > From: SACC-L@yahoogroups.com [mailto:SACC-L@yahoogroups.com] On Behalf
      > Of Renee Garcia
      > Sent: Thursday, October 12, 2006 6:14 PM
      > To: SACC-L@yahoogroups.com
      > Subject: RE: [SACC-L] a question about chins
      >
      >
      >
      > Hi Lori,
      >
      > From a morphologists perspective the modern Homo sapiens' chin can be
      > likened to the Suprainiac fossa of the Neandertals. No function,
      > purelya
      > trait that through genetic isolation became dominant in the
      > population.It
      > is a derived trait of modern humans like the fossa is to
      > neandertals as
      > well. This is supported by the lack of its presence in the fossil
      > recordprior to the appearance of a.m.H.s.. Also, there are no
      > significantmuscular
      > attachments in this area that could cause the kind of demarcation
      > of the
      > mental eminence.
      >
      > Another factor of the variation in prominence is related to sexual
      > dimorphism. Larger males will demonstrate more profound demarcation
      > while
      > more petite females less (scale 1-5, 5 being male).
      >
      > Although this explanation for its existence doesn't provide answers
      > specifically as to why it developed, we know that is one of the unique
      > features that distinguishes modern humans from any species of hominid.
      >
      > Hop e this helps.
      >
      > Renee
      >
      > Renee Garcia
      > Saddleback College
      > Dept. of Anthropology
      > Universite de Bordeaux I
      > Anthropologie Biologique
      >
      > -----Original Message-----
      > From: SACC-L@yahoogroups.com <mailto:SACC-L%40yahoogroups.com>
      > [mailto:SACC-L@yahoogroups.com <mailto:SACC-L%40yahoogroups.com> ] On
      > Behalf Of
      > Lori Barkley
      > Sent: Thursday, October 12, 2006 2:00 PM
      > To: SACC-L@yahoogroups.com <mailto:SACC-L%40yahoogroups.com>
      > Subject: [SACC-L] a question about chins
      >
      > Hi all,
      > I've been asked by a student why modern Homo sapiens were the only
      > onesto develop a prominent chin. I'm hoping someone out there can
      > tell me
      > why... what is the evolutionary advantage? I seem to remember
      > somethingabout protecting the rest of the face....
      > thanks!
      >
      > Lori Barkley
      > Anthropology Instructor
      > School of University Arts & Sciences
      > Selkirk College
      > 301 Frank Beinder Way,
      > Box 1200 Castlegar, BC V1N 3J1
      > ph. 250-365-1319
      > email: lbarkley@... <mailto:lbarkley%40selkirk.ca>
      >
      > Be sure to check out the SACC web page at www.anthro.cc (NOTE THE NEW
      > ADDRESS!!) for meeting materials, newsletters, etc.
      > Yahoo! Groups Links
      >
      >
      >
      >
      >
      > [Non-text portions of this message have been removed]
      >
      >
      >
      > Be sure to check out the SACC web page at www.anthro.cc (NOTE THE
      > NEW ADDRESS!!) for meeting materials, newsletters, etc.
      > Yahoo! Groups Links
      >
      >
      >
      >
      >
    • Tbbyrnehom@aol.com
      Hi Renee, Is Phil Stein available for this question. I thought he was our resident expert. I remember being told that the reduction of teeth size had much
      Message 2 of 13 , Oct 13, 2006
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        Hi Renee, Is Phil Stein available for this question. I thought he was our
        resident expert.
        I remember being told that the reduction of teeth size had much to do with
        the protrusion of the chin. Bill Byrne, happily retired


        [Non-text portions of this message have been removed]
      • Kent Morris
        Ann--who do we send the profile to? ... From: Kaupp, Ann To: SACC-L@yahoogroups.com Sent: Thursday, October 12, 2006 12:23 PM Subject: [SACC-L] SACC Website
        Message 3 of 13 , Oct 15, 2006
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          Ann--who do we send the profile to?
          ----- Original Message -----
          From: Kaupp, Ann
          To: SACC-L@yahoogroups.com
          Sent: Thursday, October 12, 2006 12:23 PM
          Subject: [SACC-L] SACC Website


          Dear Members,

          We have heard only from a handful of SACC members who have sent in their
          contributions to the sections on member profiles, publications, and
          student opportunities. They will be sad looking pages if we don't get
          more input.

          Please take a few moments over the weekend to prepare a short parag.
          about yourself (where you teach, what courses, and research focus if
          applicable). If you are a retired SACC member, we still want to hear
          about what your contributions and what you specialized in.

          If you have any questions, you can email me at kauppa@.... Ann

          [Non-text portions of this message have been removed]





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        • Kaupp, Ann
          Please send your profiles, publications, and student fieldwork opportunities to kauppa@si.edu and Lloyd Miller.mcshi.com ... From: SACC-L@yahoogroups.com
          Message 4 of 13 , Oct 16, 2006
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            Please send your profiles, publications, and student fieldwork
            opportunities to kauppa@... and Lloyd Miller.mcshi.com


            -----Original Message-----
            From: SACC-L@yahoogroups.com [mailto:SACC-L@yahoogroups.com] On Behalf
            Of Kent Morris
            Sent: Sunday, October 15, 2006 12:47 PM
            To: SACC-L@yahoogroups.com
            Subject: Re: [SACC-L] SACC Website

            Ann--who do we send the profile to?
            ----- Original Message -----
            From: Kaupp, Ann
            To: SACC-L@yahoogroups.com
            Sent: Thursday, October 12, 2006 12:23 PM
            Subject: [SACC-L] SACC Website


            Dear Members,

            We have heard only from a handful of SACC members who have sent in
            their
            contributions to the sections on member profiles, publications, and
            student opportunities. They will be sad looking pages if we don't get
            more input.

            Please take a few moments over the weekend to prepare a short parag.
            about yourself (where you teach, what courses, and research focus if
            applicable). If you are a retired SACC member, we still want to hear
            about what your contributions and what you specialized in.

            If you have any questions, you can email me at kauppa@.... Ann

            [Non-text portions of this message have been removed]





            __________ NOD32 1.1798 (20061011) Information __________

            This message was checked by NOD32 antivirus system.
            http://www.eset.com


            [Non-text portions of this message have been removed]



            Be sure to check out the SACC web page at www.anthro.cc (NOTE THE NEW
            ADDRESS!!) for meeting materials, newsletters, etc.
            Yahoo! Groups Links
          • Lori Barkley
            Thanks to all of you who answered my chin question. It is so great to have a list-serve of virtual colleagues to fill the void of not having actual ones! Lori
            Message 5 of 13 , Oct 17, 2006
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              Thanks to all of you who answered my chin question. It is so great to
              have a list-serve of virtual colleagues to fill the void of not having
              actual ones!

              Lori Barkley
              Anthropology Instructor
              School of University Arts & Sciences
              Selkirk College
              301 Frank Beinder Way,
              Box 1200 Castlegar, BC V1N 3J1
              ph. 250-365-1319
              email: lbarkley@...
            • Kaupp, Ann
              Dear SACC Members, I wanted to bring you up-to-date regarding our website. In the spring, SACC hired Colleen Popson, an anthropologist/educator/writer, who is
              Message 6 of 13 , Sep 10, 2010
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                Dear SACC Members,

                I wanted to bring you up-to-date regarding our website. In the spring, SACC hired Colleen Popson, an anthropologist/educator/writer, who is a research collaborator in the Smithsonian's Department of Anthropology and part-time communications specialist for the government.

                Thanks to Colleen, our website is now up-to-date and has greater visibility on the Internet. Please note that you can now access SACCivities online, there is a separate page for regional vice-presidents under About Us, and we have added all the recipients of SACC's Presidential Awards (if I've missed someone, please let me know). In addition, the full issue of Spring 2010 SACC Notes is now available online.

                Colleen has begun training me on WordPress, and I am grateful for her patience. So please visit http://saccweb.net/ and let us know what you think.

                P. S. We still would like more member profiles http://saccweb.net/?page_id=41

                Best wishes,

                Ann



                [Non-text portions of this message have been removed]
              • Kent Morris
                Ann--how can I edit my profile? ... From: Kaupp, Ann To: SACC ListServ Sent: Friday, September 10, 2010 1:11 PM
                Message 7 of 13 , Sep 10, 2010
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                  Ann--how can I edit my profile?
                  ----- Original Message -----
                  From: "Kaupp, Ann" <kauppa@...>
                  To: "SACC ListServ" <SACC-L@yahoogroups.com>
                  Sent: Friday, September 10, 2010 1:11 PM
                  Subject: [SACC-L] SACC Website


                  > Dear SACC Members,
                  >
                  > I wanted to bring you up-to-date regarding our website. In the spring,
                  > SACC hired Colleen Popson, an anthropologist/educator/writer, who is a
                  > research collaborator in the Smithsonian's Department of Anthropology and
                  > part-time communications specialist for the government.
                  >
                  > Thanks to Colleen, our website is now up-to-date and has greater
                  > visibility on the Internet. Please note that you can now access
                  > SACCivities online, there is a separate page for regional vice-presidents
                  > under About Us, and we have added all the recipients of SACC's
                  > Presidential Awards (if I've missed someone, please let me know). In
                  > addition, the full issue of Spring 2010 SACC Notes is now available
                  > online.
                  >
                  > Colleen has begun training me on WordPress, and I am grateful for her
                  > patience. So please visit http://saccweb.net/ and let us know what you
                  > think.
                  >
                  > P. S. We still would like more member profiles
                  > http://saccweb.net/?page_id=41
                  >
                  > Best wishes,
                  >
                  > Ann
                  >
                  >
                  >
                  > [Non-text portions of this message have been removed]
                  >
                  >
                  >
                  > ------------------------------------
                  >
                  > Find out more at our web page :http://webs.anokaramsey.edu/sacc/Yahoo!
                  > Groups Links
                  >
                  >
                  >
                  >
                  > __________ Information from ESET NOD32 Antivirus, version of virus
                  > signature database 5441 (20100910) __________
                  >
                  > The message was checked by ESET NOD32 Antivirus.
                  >
                  > http://www.eset.com
                  >
                  >
                  >


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                  The message was checked by ESET NOD32 Antivirus.

                  http://www.eset.com
                • Kaupp, Ann
                  Send me your changes or new profile and I ll put them up. thanks. Ann ________________________________ From: SACC-L@yahoogroups.com [SACC-L@yahoogroups.com]
                  Message 8 of 13 , Sep 12, 2010
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                    Send me your changes or new profile and I'll put them up. thanks. Ann

                    ________________________________
                    From: SACC-L@yahoogroups.com [SACC-L@yahoogroups.com] On Behalf Of Kent Morris [km52@...]
                    Sent: Friday, September 10, 2010 11:39 PM
                    To: SACC-L@yahoogroups.com
                    Subject: Re: [SACC-L] SACC Website



                    Ann--how can I edit my profile?
                    ----- Original Message -----
                    From: "Kaupp, Ann" <kauppa@...<mailto:kauppa%40si.edu>>
                    To: "SACC ListServ" <SACC-L@yahoogroups.com<mailto:SACC-L%40yahoogroups.com>>
                    Sent: Friday, September 10, 2010 1:11 PM
                    Subject: [SACC-L] SACC Website

                    > Dear SACC Members,
                    >
                    > I wanted to bring you up-to-date regarding our website. In the spring,
                    > SACC hired Colleen Popson, an anthropologist/educator/writer, who is a
                    > research collaborator in the Smithsonian's Department of Anthropology and
                    > part-time communications specialist for the government.
                    >
                    > Thanks to Colleen, our website is now up-to-date and has greater
                    > visibility on the Internet. Please note that you can now access
                    > SACCivities online, there is a separate page for regional vice-presidents
                    > under About Us, and we have added all the recipients of SACC's
                    > Presidential Awards (if I've missed someone, please let me know). In
                    > addition, the full issue of Spring 2010 SACC Notes is now available
                    > online.
                    >
                    > Colleen has begun training me on WordPress, and I am grateful for her
                    > patience. So please visit http://saccweb.net/ and let us know what you
                    > think.
                    >
                    > P. S. We still would like more member profiles
                    > http://saccweb.net/?page_id=41
                    >
                    > Best wishes,
                    >
                    > Ann
                    >
                    >
                    >
                    > [Non-text portions of this message have been removed]
                    >
                    >
                    >
                    > ------------------------------------
                    >
                    > Find out more at our web page :http://webs.anokaramsey.edu/sacc/Yahoo!
                    > Groups Links
                    >
                    >
                    >
                    >
                    > __________ Information from ESET NOD32 Antivirus, version of virus
                    > signature database 5441 (20100910) __________
                    >
                    > The message was checked by ESET NOD32 Antivirus.
                    >
                    > http://www.eset.com
                    >
                    >
                    >

                    __________ Information from ESET NOD32 Antivirus, version of virus signature database 5441 (20100910) __________

                    The message was checked by ESET NOD32 Antivirus.

                    http://www.eset.com
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