Evolution of the chordate body plan: new insights from phylogenetic analyses of deuterostome phyla.

@article{Cameron2000EvolutionOT,
  title={Evolution of the chordate body plan: new insights from phylogenetic analyses of deuterostome phyla.},
  author={Christopher B. Cameron and J R Garey and Billie J. Swalla},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={2000},
  volume={97 9},
  pages={
          4469-74
        }
}
  • C. Cameron, J. Garey, B. Swalla
  • Published 25 April 2000
  • Biology, Medicine
  • Proceedings of the National Academy of Sciences of the United States of America
The deuterostome phyla include Echinodermata, Hemichordata, and Chordata. Chordata is composed of three subphyla, Vertebrata, Cephalochordata (Branchiostoma), and Urochordata (Tunicata). Careful analysis of a new 18S rDNA data set indicates that deuterostomes are composed of two major clades: chordates and echinoderms + hemichordates. This analysis strongly supports the monophyly of each of the four major deuterostome taxa: Vertebrata + Cephalochordata, Urochordata, Hemichordata, and… 
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