image: Fossil and living animals analyzed by Finnegan and coauthors in their study of extinction risk in the oceans. Fossil examples on left, living examples on right. From top to bottom: whales, sharks, echinoids, clams, snails, corals. This material relates to a paper that appeared in the May 1, 2015 issue of Science, published by AAAS. The paper, by S. Finnegan at University of California, Berkeley in Berkeley, CA, and colleagues was titled, 'Paleontological baselines for evaluating extinction risk in the modern oceans.' view more
Credit: [Credit (clockwise from top right): living whale (Ari S. Friedlaender), living shark (Kevin D. Lafferty), living echinoid (Simon Coppard), living snail (Nick Hobgood), living clam (Erin Dillon), living coral (Aaron O'Dea), fossil coral (Aaron O'Dea), fossil clam (Jon Todd), fossil snail (Felix Rodriguez), fossil echinoid (Aaron O'Dea), fossil shark (Catalina Pimiento), fossil whale (Nicholas D. Pyenson)]