@misc{indiciae8be95fb201aa,
  title = {National Geochronological Database},
  author = {Jan Revised by Sloan and Christopher D. Henry and Melanie Hopkins and Steve Ludington and Robert E. Zartman and Charles A. Bush and Carl Abston},
  year = {2003},
  doi = {10.3133/ofr03326\_rev},
  url = {https://pubs.usgs.gov/publication/ofr03326\_rev},
  note = {Source identifier: ofr03326\_rev}
}