Animal Family Tree Trunk Made of Jelly (1 of 3) (image) American Association for the Advancement of Science Share Print E-Mail Caption This image shows Mnemiopsis leidyi, a species of comb jelly. This image relates to a paper that appeared in the 13 Dec., 2013, issue of Science, published by AAAS. The paper, by Joseph F. Ryan at National Human Genome Research Institute, National Institutes of Health in Bethesda, MD, and colleagues was titled, "The Genome of the Ctenophore Mnemiopsis leidyi and Its Implications for Cell Type Evolution." Credit [Image courtesy of Stefan Siebert, Brown University] Usage Restrictions Please cite the owner of the image when publishing. This image may be freely used by reporters as part of news coverage, with proper attribution. Non-reporters must contact Science for permission. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.