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Re: How are columbiformes (doves and pigeons) related to psittaciformes?
The Mayr (2000) paper quoted by Mickey also repeats Mayr's previous
objections to referring the parrot-like beak fragment from the Lance
Formation to the Psittacidae. This would mean that the strikingly
parrot-like characters in the Late Cretaceous lower jaw fragment (e.g.,
K-shaped neurovascular canal, very concave symphysis) would be the result of
convergence. (Or the specimen was reworked, although I don't want to
pooh-pooh the stratigraphical work of the folks who unearthed the specimen).
Stidham, T.A. (1998). A lower jaw from a Cretaceous parrot. Nature 396:
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