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Re: Theropod posture-in-motion article

Dann Pigdon wrote:
> bh480@scn.org wrote:
> >
> > From: Ben Creisler bh480@scn.org
> > In case nobody's mentioned this, a new view of theropod
> > posture and motion is discussed at:
> >
> > http://www.abcnews.go.com/sections/scitech/DailyNews/dinosu
> > it010827.html
> >
> > This topic was also discussed in the on-line news section
> > of Science magazine last week, but you need a subscription
> > to read it.
> > http://sciencenow.sciencemag.org/cgi/content/full/2001/820/
> > 2
> >
> > Haven't seen the Journal of Experimental Biology yet,
> > though.
> To be honest, this research (if it can be called that) seems full of
> holes. How can a human body, no matter how many weights and bits of
> lumber are strapped to it, ever mimic the stresses felt by a theropod?
> You'd have to have major surgery to alter the way the leg muscles attach
> to the pelvis, and to restrict the range of motion of the knees and
> ankles. A human, who has walked in a certain way most of their life,
> straps on some hardware and declares "ooh... this feels weird. They
> mustn't have done it this way" after only a few hours or days. It must
> be so!
> Now, if the subjects had radically different skeletal and muscle
> structures, and had lived their entire lives as a one-man-hardware
> store, perhaps then...
> --
> ________________________________________________________________
> Dann Pigdon                   Australian Dinosaurs:
> GIS Archaeologist           http://www.geocities.com/dannsdinosaurs
> Melbourne, Australia        http://www.alphalink.com.au/~dannj/
> ________________________________________________________________

  This is strange research.  What about very minute movements of the
head, neck arms and trunk, not to mention some help from the tail that
could help an allosaur with a turn. It would be interesting to see how
much the trunk and tail could aid in a turn.  I cerntainly don't think
that the rest of their anatomy was a stiff as a board, literally.

 David Krentz