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RE: Yet more on dinosaur quad climbers

> Date: Fri, 12 Jul 2013 21:42:08 -0400
> From: ruben@mrbrklyn.com
> To: biologyinmotion@gmail.com
> CC: ruben@mrbrklyn.com; dinosaur@usc.edu
> Subject: Re: Yet more on dinosaur quad climbers
> On Fri, Jul 12, 2013 at 05:45:43PM -0700, Mike Habib wrote:
>> On Jul 12, 2013, at 5:05 PM, Ruben Safir <ruben@mrbrklyn.com> wrote:
>>> You didn't write this?
>>> "but this does not mean that those effects were the primary function or
>>> that the limbs were used for a sustained flight function (or, indeed, a
>>> lift dominated function at all - though it is likely they were)"
>>> That flight feathers would have evolved for anything other than flight
>>> would be an extradonary hypothesis that would need extradonary evidence.
>> However, the precursor feathers might have, instead, attained some of the 
>> relevant morphology under other forms of selection - for example, in the 
>> context of display, brooding, armor, etc. Whether or not this is 
>> "extraordinary" is a matter of opinion. What is not a matter of opinion,
> Not if you had kites attached to your arms.

 If you had a generation with normal arms, and some individuals in the next 
generation with kites attached to their arms, I think the term for what 
happened is "Hopeful Monster", not gradual selection (pressure).