Metameric organisation of the nervous system in developmental stages of Urechis caupo (Echiura) and its phylogenetic implications

@article{Hessling2002MetamericOO,
  title={Metameric organisation of the nervous system in developmental stages of Urechis caupo (Echiura) and its phylogenetic implications},
  author={Ren{\'e} Hessling},
  journal={Zoomorphology},
  year={2002},
  volume={121},
  pages={221-234}
}
The phylogenetic position of Echiura is still in continuous debate. The commonly accepted view regards Echiura as a distinct taxon, often classified as phylum, which forms the sister group of the Articulata. The alternative view considers Echiura to be a subtaxon of Annelida, which is supported by numerous shared characters. The correct systematic position… CONTINUE READING

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