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Fwd: Ceratopian forelimbs



Oh Rob

Your physics is out to lunch. As the feet get wider apart the vertical force
is the same, the four feet must hold up the weight of the animal or it will
land with a tremendous evolutionary belly flop. In addition as the feet get
wider they must also support a greater transverse force that causes what you
have been refering to as a greater stability. Not to mention the additional
torque on its ankle. Maybe its related to the hydrogen suaropods. 

paul sparks

---------------------
Forwarded message:
From:   Robert.J.Meyerson@uwrf.edu (Rob Meyerson)
Sender: dinosaur@lepomis.psych.upenn.edu
Reply-to:       Robert.J.Meyerson@uwrf.edu
To:     dinosaur@lepomis.psych.upenn.edu (Multiple recipients of list)
Date: 96-02-04 13:02:47 EST

><<Actually, by holding the feet out to the side, it spreads the total weight
>of
>the animal over a wide area.  This would reduce the total load on the
>forefeet.>>
>
>NO IT WOULDN'T!  The weight that the forefeet bear would be the same if they
>were spread out far or put close together, put way up front or shoved way
>back.  The weight is the same.  The only way to reduce the total load on the
>forefeet is if they happened to be resting on a rock a few thousand
>kilometers above the Earth where there would be a big enough reduction in
the
>Earth's gravity to be noticible.

See previous post.  The physics prove my point.

Rob

***
Q.  What fossil fish is a blood relative?

A.  The antiarch.