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> In the forelimb (various modifications for a wing), in the foot (retroverted
> hallux), in the skeleton (pneumatization), and probably in the soft anatomy
> as well. Not to mention a number of less important but noteworthy cranial
> modifications, and flight feathers.

     I thought that Archaeopteryx bones did not appear to be pneumatized, 
but were solid structures.  

LN Jeff