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Re: AW: Heterodontosaurid with protofeathers

????????? Hair is such a good idea that something like it evolved atleast twice; in mammals and in therapod dinosaurs (maybe all dinosaurs, maybe not). It would have been in response to - the weather.

Dora Smith
Austin, TX
----- Original Message ----- From: "Amtoine Grant" <rascienz@shaw.ca>
To: <dinosaur@usc.edu>
Sent: Wednesday, March 18, 2009 5:56 PM
Subject: Re: AW: Heterodontosaurid with protofeathers

On 18-Mar-09, at 12:36 PM, evelyn sobielski wrote:
The really interesting question here - and it is one that is likely to be swamped by a deluge of faux-feather headlines - is: why? What is the use of such integumentary structures? It is hard to see them as evolutionary neutral, so they are likely to have conferred some benefit. What precisely did it evolve for?

If they actually evolved FOR something, they should at least give us a good idea what the stimuli for it was (NOTE - I'm pretty sure this "anticipated adaptations" train of thought is not how evolution actually works). It would seem that