%0 Journal Article %T Photosynthetic Mechanisms and Paleoecology from Carbon Isotope Ratios in Ancient Specimens of C4 and CAM Plants. %A Troughton, J H %A Wells, P V %A Mooney, H A %J Science (New York, N.Y.) %V 185 %N 4151 %P 610-2 %@ 0036-8075 %D 2010-07-02 %~ DeepDyve