FW: Question

["Stewart, Dwight" <Dwight.Stewart@VLSI.com>]

I have a question that I have been attempting to get a clear answer on for
some time.
   So, here's my question: what features have led to the conclusion that
Tyrannosaurus rex walked, ran, and (perhaps) primarily stood with its body
almost horizontal?  Do you agree with this paradigm?  And, if Tyrannosaurus
rex did move & stand in this posture, COULD he (or she) have stood more
erect.
I understand (I think :-)) that the paradigm that birds tend to hold their
bodies at that angle (some birds, anyway) could open the question up, but
the physics of the very horizontal stance look awkward to my eyes.  By that,
I mean that if one takes the hip structure as the fulcrum, then the front
end of the Tyrannosaurus rex appears to be over-balanced with respect to the
tail.
I know the T. rex head had many air pockets and that the small arms would
also tend to damper this effect.  Nevertheless, the tail doesn't seem quite
long or robust enough to balance out the structures anterior of the hips.
Am I missing something here?  What made me ponder this is that I collect
1/40th scale museum quality dinosaur models and the Bataat model was touted
to me as the most accurate representation of what the T. rex looked and
stood like.  SO, I bought one and it has this rather nasty habit of doing a
nose dive when it stands alone.  I asked my friend at the Dinosaur World
Store about this and he stated; "Gee, they ALL do that."  :-)  My solution
was to pose my Tyrannosaurus lurking over (propped up) on the back of my
Triceratops. 
   
Dwight