Zoology: War of the Worms.
The phylogenetic affinities of Xenacoelomorpha - the phylum comprising Xenoturbella bocki and acoelomorph worms - are debated. Two recent studies conclude they represent the earliest branching bilaterally symmetrical animals, but additional tests may be needed to confirm this notion.
Department of Genetics, Evolution and Environment, University College London, Darwin Building, Gower Street, London WC1E 6BT, UK. Electronic address: m.telford@ucl.ac.uk.
Maximilian J
MJ
Telford
Sorbonne Universités, UPMC Univ Paris 06, CNRS, Laboratoire de Biologie du Développement de Villefranche-sur-mer (LBDV), 181 chemin du Lazaret, 06230 Villefranche-sur-mer, France.
Richard R
RR
Copley
D000818:Animals; D005075:Biological Evolution; D008954:Models, Biological; D010802:Phylogeny; D014419:Turbellaria / Q000145:classification / Q000235:genetics*