The position of the Arthropoda in the phylogenetic system

  title={The position of the Arthropoda in the phylogenetic system},
  author={Andreas Schmidt-Rhaesa and Thomas Bartolomaeus and Christian Lemburg and Ulrich Ehlers and James R. Garey},
  journal={Journal of Morphology},
Traditionally, Panarthropoda (Euarthropoda, Onychophora, Tardigrada) are regarded as being closely related to Annelida in a taxon Articulata, but this is not supported by molecular analyses. Comparisons of gene sequences suggest that all molting taxa (Panarthropoda, Nematoda, Nematomorpha, Priapulida, Kinorhyncha, Loricifera) are related in a monophyletic taxon Ecdysozoa. An examination of the characters supporting Articulata reveals that only segmentation with a teloblastic segment formation… 

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