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Re: New feather-like fossil from the Jurassic of Kazakhstan, Dzik et al 2010
David Marjanovic <firstname.lastname@example.org> wrote:
> Yes. The assumption that feathers in general are "for flight" is a fairly
> integral part of BAND (see Feduccia's books) and was rather widespread even
> outside it till *Sinosauropteryx* was discovered.
Feduccia explicitly rejects the idea that feathers (or their ancestral
homologs) originally evolved for insulation. In his words:
"To clothe a ground-dwelling, warm-blooded reptile with feathers for
insulation is tantamount to insulating an ice truck with heat shields
from the space shuttle."
(Thus, Feduccia is equating a dinosaurian origin of birds with a
'ground-up' origin of flight. Tsk tsk.)
Instead, Feduccia proposed that feathers evolved for feather-assisted
jumping from limb to limb by tree-dwelling protobirds (which were not
dinosaurs, but some form of arboreal 'thecodont').