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More dinosaur molecules
Dont know if you guys have seen this yet, BUT:
Chubb, A.L. 2004. New nuclear evidence for the oldest divergence among
neognath birds: the phylogenetic utility of ZENK (i). Molecular Phylogenetics
and Evolution 30: 140-151.
Abstract: To date, there is little consensus concerning the phylogenetic
relationships among neognath orders, which include all extant birds except
ratites
and tinamous. Different data sets, both molecular and morphologic, have
yielded radically different and often unresolved ordinal topologies, especially
within the neoaves clade. This lack of resolution and ongoing conflict
indicates
a need for additional phylogenetic characters to be applied to the question of
higher-level avian phylogeny. In this study, sequences of a singlecopy
nuclear gene, ZENK, were used to reconstruct an ordinal-level phylogeny of
neognath
birds. Strong support was indicated for the oldest divergence within
Neognathae; the chicken- and duck-like birds formed a clade that was sister to
all
other modern birds. In addition, many families of traditional taxonomic orders
clustered together in the ZENK tree, indicating the gene's general
phylogenetic reliability. However, within the neoaves clade, there was little
support for relationships among orders, which is a result similar to all
other recent molecular studies of higher-level avian phylogeny. This similarity
among studies suggests the possibility of a rapid radiation of the major
neoaves
lineages. Despite the ongoing lack of neoaves resolution, ZENK's sequence
divergence and base composition patterns indicate its general utility as a new
phylogenetic marker for higher-level avian systematics.
One interesting thing she did find within Neoaves was (surprise surprise),
grebes + flamingos. Only 50% boostrap support though, even if it was higher
than
any other clade in there.