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Re: Meet Protopteryx: two Yixian maniraptorans in one week!
In a message dated 12/7/00 5:53:42 PM, email@example.com writes:
<< _Protopteryx_ is a nearly-complete enantiornithine, with a good skull.
of great skeletal information there, potentially. The article focuses on
the long _Confuciusornis_ like tail feathers, which lacks barbs or rami at
the proximal end. The authors suggest the following evolutionary series in
the development of feathers:
(i) elongation of scales
(ii) appearance of a central shaft
(iii) differentiation of vanes into barbs
(iv) appearance of barbules and barbicel >>
Isn't it funny that in the recent "refutation" of Longisumata (sic) that
what's described in (i) above was laughed off has having nothing whatsoever
to do with the evolution of feathers!