Unsegmented Annelids? Possible Origins of Four Lophotrochozoan Worm Taxa1

@inproceedings{Halanych2002UnsegmentedAP,
  title={Unsegmented Annelids? Possible Origins of Four Lophotrochozoan Worm Taxa1},
  author={Kenneth M. Halanych and Thomas G. Dahlgren and Damhnait McHugh},
  booktitle={Integrative and comparative biology},
  year={2002}
}
Abstract In traditional classification schemes, the Annelida consists of the Polychaeta and the Clitellata (the latter including the Oligochaeta and Hirudinida). However, recent analyses suggest that annelids are much more diverse than traditionally believed, and that polychaetes are paraphyletic. Specifically, some lesser-known taxa (previously regarded as separate phyla) appear to fall within the annelid radiation. Abundant molecular, developmental, and morphological data show that the… 

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