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Re: Sinosauropteryx tail colors

--- On Thu, 1/28/10, Tim Williams <tijawi@yahoo.com> wrote:

> Display was obviously important to theropods, hence the
> investment in cranial crests in many non-avian theropod
> taxa.  It may be that the first feathers took over from
> bony cranial crests - although they weren't mutually
> exclusive (e.g., _Guanlong_, some oviraptorosaurs). 
> But if display can drive the evolution of something as weird
> and "showy" as the cranial crests of _Dilophosaurus_ or
> _Guanlong_, then this same selective pressure could be
> behind the appearance of an evolutionary novelty such as
> feathers.

Not sure I disagree (although given my track record it might seem likely), but 
wouldn't the more exact analogy be claiming that bone itself evolved as a 
"display mechanism"?