@misc{indiciae8a14a715d892,
  title = {Correlation of the middle eocene Kellogg Shale of northern California},
  author = {John A. Barron and David Bukry and Richard Z. Poore},
  year = {1984},
  doi = {10.2307/1485715},
  url = {https://pubs.usgs.gov/publication/70208676},
  note = {Source identifier: 70208676}
}