An article published in the journal “Science” reports a study of fossils found at the Corral Bluffs site in Colorado, USA, dating back to a period that spans about a million years after the mass extinction that wiped out dinosaurs and many others species. A team of researchers led by Tyler Lyson and Ian Miller of the Denver Museum of Nature and Science examined what turned out to be fossils of remarkable quality of many species of animals and plants, including pollens, from the period in which life forms recovered after the great extinction.