Re: Ceratopian jaws (my last bow)

[Stan Friesen <swf@ElSegundoCA.NCR.COM>]

From: Ronald Orenstein <ornstn@inforamp.net>

 > A muscle inserting at a shallow angle, though, may be particularly well
 > suited to draw the lower jaw backwards against the upper jaw, something
 > that might have been extremely useful if the animals needed to produce
 > grinding or sawing movements to deal with whatever plants they were eating.

Ah, chewing.  A good possibility.  Ceratopsians *did* have an
impressive battery of grinding teeth, somewhat similar to that found
in modern ungulates.

swf@elsegundoca.ncr.com         sarima@ix.netcom.com

The peace of God be with you.