@misc{indiciae118afc78238b,
  title = {Stratigraphic value of silicoflagellates in nontropical regions},
  author = {David Bukry},
  year = {1974},
  doi = {10.1130/0016-7606(1974)85<1905:svosin>2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70208821},
  note = {Source identifier: 70208821}
}