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Relations of the new phylum Cycliophora
Winnepenninckx, B.M.H.; Backeljau, T.; Kristensen, R.M. (1998). Relations of the new phylum Cycliophora. Nature (Lond.) 393(6686): 636-638. dx.doi.org/10.1038/31377
In: Nature: International Weekly Journal of Science. Nature Publishing Group: London. ISSN 0028-0836; e-ISSN 1476-4687, more
Peer reviewed article  
Available in  Authors 
Keywords
    Biogeny > Phylogeny
    Classification > Taxonomy
    Cycliophora [WoRMS]
    Marine/Coastal
Authors  Top 
  • Winnepenninckx, B.M.H., more
  • Backeljau, T., more
  • Kristensen, R.M., more
Abstract
    The Cycliophora is the most recently described animal phylum and is based on a single species, Symbion pandora, which was discovered on the mouthparts of the Norway lobster Nephrops norvegicus. Because only a few morphological data are available for Symbion, the precise nature of its phylogenetic relationships is highly controversial. Here we present a phylogenetic analysis of 18S ribosomal RNA sequence data, including a new Symbion sequence, which places Symbion in a lophophorate-aschelminth-protostome clade and which suggests a sister-group relationship between Cycliophora and a Rotifera-Acanthocephala clade.
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