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Re: Palms in
I dunno- with Horner reconstructing T rex so the arms are buried in body
muscle tissue solidly to the elbows, and with other reconstructions of
the arms of T rex being held out horizontally from the body at the
shoulders, with the forearms pointing forewards, I'm not so sure T rex
could even reach one arm with the other.
Ronald Orenstein wrote:
> At 03:06 AM 08/07/2000 -0700, Scott Hartman wrote:
> >This is taken to an extreme in allosaurs, which seem to have modified the
> >distal end of the ulna and radius in order to reduce mobility around the
> >long axis of the forearm. Why did they do this?
> I speculated here a while back that one advantage of inward-directed,
> non-pronating forearms could be their use in a strike equivalent to a pair
> of ice tongs, with the hands striking together towards the midline. The
> loss of pronation could, in such a strike, decrease the chance of slippage.
> Is there any functional evidence that the arms worked in this way?
> And, while we are on this, is Tyrannosaurus in the same boat?
> Ronald I. Orenstein Phone: (905) 820-7886
> International Wildlife Coalition Fax/Modem: (905) 569-0116
> 1825 Shady Creek Court
> Mississauga, Ontario, Canada L5L 3W2 mailto:firstname.lastname@example.org
Flying Goat Graphics
(Society of Vertebrate Paleontology member)