image: This is a comparison showing a preserved nucleus in the fern fossil compared to one of its close living relative Osmundastrum cinnamomeum. This image relates to a paper that appeared in the 21 March, 2014, issue of Science, published by AAAS. The paper, by Benjamin Bomfleur at the Swedish Museum of Natural History in Stockholm, Sweden, and colleagues was titled, "Fossilized Nuclei and Chromosomes Reveal 180 Million Years of Genomic Stasis in Royal Ferns." view more
Credit: [Image courtesy of Benjamin Bomfleur]