image: The detail of a Polycotylus latippinus' embryo. This image relates to an article that appeared in the Aug. 12, 2011, issue of Science, published by AAAS. The study, by Dr. F.R. O’Keefe of Marshall University in Huntington, WV, and colleagues was titled, "Viviparity and K-Selected Life History in a Mesozoic Marine Plesiosaur (Reptilia, Sauropterygia)." view more
Credit: Image © Natural History Museum of Los Angeles