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Xenoturbella 's molluscan relatives⃛

Nature volume 390, pages 31–32 (1997)Cite this article

Abstract

Despite detailed morphological studies1,2,3,4, the phylogenetic relationships of Xenoturbella bocki Westblad 1949 have remained unclear. The marine, worm-like X. bocki was first described as an acoel flatworm5. Later it was proposed to be a deuterostome1, and most recently as the sister taxon of the Bilateria6. Here we present DNA sequence data that place X. bocki within the protostome clade Eutrochozoa.

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Figure 1: Consensus tree showing groups present in 60% of jack-knife replicates from analysis of 18S rRNA matrix (successive weighting of characters, 10 iterations with 100 replicates each, deletion frequency e −1).
Figure 2: Consensus tree showing groups present in 60% of jack-knife replicates from analysis of COI matrix (3,000 replicates, 5 random additions and branch swapping, deletion frequency e −1).

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Authors and Affiliations

  1. Swedish Museum of Natural History, POB 50007, SE-104 05, Stockholm, Sweden

    Michael Norén & Ulf Jondelius

Authors
  1. Michael Norén
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  2. Ulf Jondelius
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Norén, M., Jondelius, U. Xenoturbella 's molluscan relatives⃛. Nature 390, 31–32 (1997). https://doi.org/10.1038/36242

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