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RE: Several New Papers



Evelyn Sobielski wrote:

4 seem to be good in any case - Galloanseres, Charadriiformes, "higher waterbirds" and "higher
landbirds". In fact, these 4 seem to be as definite and rock-solid as anyone could tell at present.

Well, the exclusion of Anseriformes and Galliformes from Neoaves is well supported on both molecular and morphological grounds. But the cladistic analysis of Bourdon (2005) found that the inclusion of odontopterygiforms broke up Galloanserae in favor of an Odontopterygiformes+Anseriformes clade (Odontoanserae). It'll be intereresting to see what effect other putative basal neognaths have on the Galloanserae (dromornithids, bathornithids).


Asiahesperornis is not really exciting. Maastrichtian hesperornithiforms are not of much use
phylogenetically as of now.

Nevertheless, it was nice of Dyke &c to confirm that it is indeed a hesperornithiform.


Mickey Mortimer wrote:

Wasn't that what Ericson et al.'s analysis was?

Both Metaves and Coronaves received a posterior probability value of 95% or more, as did many of the ingroups. 95% certainly sounds impressive. However, Ericson &c performed a Bayesian analysis, and posterior probabilities tend to be inflated relative to the respective bootstrap values. I'm a little skeptical of their topology too, including the Coronaves-Metaves split.


Cheers

Tim

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