Evidence from 18S ribosomal DNA that the lophophorates are protostome animals

@article{Halanych1995EvidenceF1,
  title={Evidence from 18S ribosomal DNA that the lophophorates are protostome animals},
  author={Km Halanych and JD Bacheller and AM Aguinaldo and SM Liva and DM Hillis and James A. Lake},
  journal={Science},
  year={1995},
  volume={267},
  pages={1641 - 1643}
}
The suspension-feeding metazoan subkingdom Lophophorata exhibits characteristics of both deuterostomes and protostomes. Because the morphology and embryology of lophophorates are phylogenetically ambiguous, their origin is a major unsolved problem of metazoan phylogenetics. The complete 18S ribosomal DNA sequences of all three lophophorate phyla were obtained and analyzed to clarify the phylogenetic relationships of this subkingdom. Sequence analyses show that lophophorates are protostomes… 
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