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Re: When New Met Papers

This is the first
record of Mesozoic birds in having four long rectrices, which may represent
morphologically a secondary sexual character, an intermediate stage from
elongated scale to branched feather, and possess functional advantage in
supplementing the lifting surface to compensate the unskilled flight.

An intermade stage from scales to feathers? :o
I thought it was long time since evo-devo showed that feathers are de novo structures not descendant from scales!
Cheers, Dawid