Developmental patterns in spiralian embryos

Curr Biol. 2010 Jan 26;20(2):R72-7. doi: 10.1016/j.cub.2009.11.041.


At least five animal phyla exhibit spiralian development, which is characterized by striking similarities in the geometry of the early cleavage pattern and the fate map of the blastula, along with similarities in larval morphology. Recent advances in reconstructing the phylogeny of spiralians and their relatives suggest that the common ancestor of a large clade of protostome phyla known as the Lophotrochozoa had spiralian development. In this minireview, I describe characteristics of spiralian development and some recent insights into its mechanisms and evolution.

Publication types

  • Review

MeSH terms

  • Animals
  • Cell Lineage
  • Embryonic Development*