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Re: Metaves and Coronaves
Molecules certainly help, but they are not the final arbiter.
Oh, sure. Mayr has made a good case for (*Scopus* + (*Balaeniceps* +
Steganopodes)), which consists of two clades in a large polytomy in Fain &
Houde, for example. But, except for the preliminary results of Livezey &
Zusi, no large-scale morphological neornithine analysis exists yet. We'll
have to wait for the big thing...
Besides, I think large indels can be regarded as de facto morphological
characters -- as long as the alignment is correct, and Fain & Houde have
shown that theirs is correct enough.