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Author Topic:   definition of proto feathers ?
Wounded King
Member (Idle past 138 days)
Posts: 4149
From: Cincinnati, Ohio, USA
Joined: 04-09-2003

Message 7 of 10 (412849)
07-26-2007 1:14 PM
Reply to: Message 3 by Nuggin
07-24-2007 7:24 PM

Re: Lemme see if I can help
One thing I find particularly telling is the presence of symetrical "wing" feathers on some of the fossils. Symertical feathers can not be used for flight, so obviously the development of feathers was due to some other selective force.
I'm a bit confused by what you mean by symmetrical. Aren't normal flight feathers generally considered bilaterally symmetrical, using the Rachis as the axis, while downy feathers are radially symmetrical
(Yue at al., 2006)?
Maybe I'm not thinking along the right axis.

This message is a reply to:
 Message 3 by Nuggin, posted 07-24-2007 7:24 PM Nuggin has replied

Replies to this message:
 Message 8 by RAZD, posted 07-26-2007 2:00 PM Wounded King has not replied
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