image: Four taxa of Cambrian skeletonized comb jellies. This material relates to a paper that appeared in the July 10, 2015, issue of Science, published by AAAS. The paper, by Q. Ou at China University of Geosciences in Beijing, China, and colleagues was titled, 'A vanished history of skeletonization in Cambrian comb jellies.' view more
Credit: [Credit: Dr. Qiang Ou and his colleagues]