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Re: When New Met Papers
This is the first
record of Mesozoic birds in having four long rectrices, which may
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!