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Re: pterosaur crest extensions



For some.  Particularly for those with very long, relatively inflexible
necks.  I'm not saying that there was no keratin, only that there would
likely be physical limits on it because of the potential for flow
reversal problems.
Jim

Aegyptiacus@aol.com wrote:
> 
> So you think, I assume, that the proportions of the keratinous crests
> could be a problem for those critters (being frontal, maybe)?
> Jean-Michel