|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, more
Phylogeny; Taxonomy; Cycliophora [WoRMS]; Marine
|Authors|| || Top |
- Winnepenninckx, B.M.H., more
- Backeljau, T., more
- Kristensen, R.M., more
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.