Revised systematics of Palaeozoic ‘horseshoe crabs’ and the myth of monophyletic Xiphosura

  title={Revised systematics of Palaeozoic ‘horseshoe crabs’ and the myth of monophyletic Xiphosura},
  author={J. Lamsdell},
  journal={Zoological Journal of the Linnean Society},
  • J. Lamsdell
  • Published 2013
  • Biology
  • Zoological Journal of the Linnean Society
  • The monophyly of the class Xiphosura is critically re-examined. For the first time a phylogenetic analysis of a number of synziphosurine and xiphosurid taxa is performed together with representatives of the other chelicerate orders also included as ingroup taxa. Xiphosura as currently defined is shown to be paraphyletic, and a revised classification is presented. Previous characteristics used to unite the xiphosurids (possessing a fused thoracetron) and a paraphyletic grade of synziphosurines… CONTINUE READING
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