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In a posting dated 12-18-95 Dr. Holtz says:
>"Exaptation": formerly 'preadaptation'.  The adoption of a previously
>existing evolutionary character into a new use.  For example, the
>bones of
>vertebrates (ancestrally for mineral storage) were exapted into
>structures by the ancestral sarcopterygians.

Out of curiosity please give details about bones being exaptated for
locomotion from storage sites.  That is if this is not tooo much of a
divergence from dinosaurs.  :-)  TR