Animal phylogeny and the ancestry of bilaterians: inferences from morphology and 18S rDNA gene sequences

@article{Peterson2001AnimalPA,
  title={Animal phylogeny and the ancestry of bilaterians: inferences from morphology and 18S rDNA gene sequences},
  author={Kevin J. Peterson and D. J. Eernisse},
  journal={Evolution \& Development},
  year={2001},
  volume={3}
}
SUMMARY Insight into the origin and early evolution of the animal phyla requires an understanding of how animal groups are related to one another. Thus, we set out to explore animal phylogeny by analyzing with maximum parsimony 138 morphological characters from 40 metazoan groups, and 304 18S rDNA sequences, both separately and together. Both types of data agree that arthropods are not closely related to annelids: the former group with nematodes and other molting animals (Ecdysozoa), and the… 

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