[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

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