@misc{indiciaedefb4d313e80,
  title = {Coccolith-bearing late middle Eocene kerogen shale, Tillamook Highlands, northwest Oregon Coast Range},
  author = {P. D. Snavely and David Bukry and R.E. Wells},
  year = {1993},
  doi = {10.3133/ofr93623},
  url = {https://pubs.usgs.gov/publication/ofr93623},
  note = {Source identifier: ofr93623}
}