On the Origins of the Major Groups of Animals

Journal Article ON THE ORIGINS OF THE MAJOR GROUPS OF ANIMALS Get access J. R. Nursall J. R. Nursall Department of Zoology University of Alberta Edmonton Search for other works by this author on: Oxford Academic Google Scholar Evolution, Volume 16, Issue 1, 1 March 1962, Pages 118–123, https://doi.org/10.1111/j.1558-5646.1962.tb03203.x Published: 01 March 1962 Article history Received: 05 June 1961 Published: 01 March 1962