In a message dated 95-09-29 13:05:36 EDT, Thomas_R_HOLTZ@umail.umd.edu (th81) writes: >Much in the way that the hoatzin "magically regained" functional unguals? > >Reversals happen. > > And it could be argued that this is not really a reversal but a genuine hoatzin autapomorphy. But I won't split hairs (feathers?).