Phylogenetic-signal dissection of nuclear housekeeping genes supports the paraphyly of sponges and the monophyly of Eumetazoa.

@article{Sperling2009PhylogeneticsignalDO,
  title={Phylogenetic-signal dissection of nuclear housekeeping genes supports the paraphyly of sponges and the monophyly of Eumetazoa.},
  author={Erik A. Sperling and Kevin J. Peterson and Davide Pisani},
  journal={Molecular biology and evolution},
  year={2009},
  volume={26 10},
  pages={2261-74}
}
The relationships at the base of the metazoan tree have been difficult to robustly resolve, and there are several different hypotheses regarding the interrelationships among sponges, cnidarians, ctenophores, placozoans, and bilaterians, with each hypothesis having different implications for the body plan of the last common ancestor of animals and the paleoecology of the late Precambrian. We have sequenced seven nuclear housekeeping genes from 17 new sponges, bringing the total to 29 species… CONTINUE READING
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