Animal evolution: a soap opera of unremarkable worms

Curr Biol. 2011 Feb 22;21(4):R151-3. doi: 10.1016/j.cub.2010.12.017.

Abstract

Recent phylogenies have suggested that acoelomorph flatworms might provide insights into the nature of the ancestor of bilaterian animals. However, according to new data acoelomorphs might instead be degenerate deuterostomes closely related to Xenoturbella, muddying the waters of early animal evolution.

MeSH terms

  • Animals
  • Biological Evolution*
  • Invertebrates / anatomy & histology*
  • Invertebrates / genetics*