Roy E. Plotnick, Brendan M. Anderson, Sandra J. Carlson, Advait M. Jukar, Julien Kimmig and Elizabeth Petsios Frozen in time, a 125-million-year-old mammal attacking a dinosaur. A 39-million-year-old whale, the heaviest animal that ever lived. The oldest known jellyfish, from 505 million years ago. Paleontology produces newsworthy discoveries. Fossils, moreover…