@misc{indiciae239e4a923c4f,
  title = {Fossils, rocks, and time},
  author = {Lucy E. Edwards and John Pojeta},
  year = {1993},
  doi = {10.3133/7000011},
  url = {https://pubs.usgs.gov/publication/7000011},
  note = {Source identifier: 7000011}
}