New Research Organisms Plankton What in Darwin’s Name Are Chaetognaths?! Kevin Zelnio June 7, 2010 Best of ZelnioCambrianChaetognathCurrent BiologyDeuterostomeEcdysozoaevolutionfossilmolecular phylogenyPhylogeneticsPlatyhelminthesPriapulidaProtostomeRB Editor's Selection Lynn Margulis classified the Chaetognaths, known as arrow worms, as deuterostomes. Deuterostomy is characterized by several developmental characteristics including radial, indeterminate cleavage, a posterior position… View More What in Darwin’s Name Are Chaetognaths?!
