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Re: AW: Heterodontosaurid with protofeathers



On Tue, Mar 31, 2009 at 4:01 PM, Dann Pigdon <dannj@alphalink.com.au> wrote:
>
> There's no reason to assume that fur evolved just once amongst
> mammals

Given that we have direct evidence of fur in a stem-mammal (the
_Castorocauda_ holotype, a docodont mammaliaform), there's a pretty
good reason to assume that. (The picture *could* be more complex, but
at this point there's no reason to *assume* so.)

-- 
T. Michael Keesey
Technical Consultant and Developer, Internet Technologies
Glendale, California