@misc{indiciae0e196ddd3367,
  title = {Latest Oligocene through early middle Miocene diatom biostratigraphy of the eastern tropical Pacific},
  author = {John A. Barron},
  year = {1983},
  doi = {10.1016/0377-8398(83)90012-9},
  url = {https://pubs.usgs.gov/publication/70011645},
  note = {Source identifier: 70011645}
}