Bennett Snyder

Biology

25 February, 21:19

Researchers recently discovered an exquisite fossil of a fern (land plant) in sweden. the plant was preserved instantaneously when buried in a lava flow. under a microscope, scientists can see nuclei, some in different stages of cell division, along with some individual chromosomes. this fossil fern was found in a layer along with dinosaur fossils. how old could this fossil be, based upon this information and dates of events in the history of life