Re: Feathers for S excretion

["T. Mike Keesey" <tmk@dinosauricon.com>]

On Sat, 31 Mar 2001, Steve  Brusatte wrote:

> Erm...this may be pressing it.  As far as I understand, hair evolved
> from sensory bristles in early mammals.

As I understand it, the earliest evidence for hair in _Synapsida_ is
supposed whisker pits in basal _Cynodontia_. This doesn't mean that hair
evolved from sensory bristles -- it could easily be the other way around,
since senory bristles are one of the few types of hair that leave skeletal
indicators. Someone correct me if I'm wrong here.

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