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RE: Theropod shoulder movement




While I don't have a ref (see previous posts of mine), I have seen some sort
of anti-pronation device (if you will), locking the radius and ulna together
in a ceratosaur. So, this adaptation probably occured before the
ceratosaur-tetanurane split.


What are the anatomical details of this "locking" (anti-pronation) device? Does it involve the distal and proximal ends of the radius and ulna.

Chris


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