image: Fossil phytoliths from a 40 million-year-old soil from the Sarmiento Formation, Gran Barranca, Chubut, Argentina. Center is an epidermal phytolith indicative of open habitats. Scale bar = 10 micrometers. This material relates to papers that appeared in the January 16, 2015 issue of Science, published by AAAS. The paper, Regan E. Dunn at the University of Washington in Seattle, WA, and colleagues was titled, 'Linked canopy, climate, and faunal change in the Cenozoic of Patagonia.' view more
Credit: [Credit: Regan Dunn]