@misc{indiciae74257f052b17,
  title = {Planktonic benthonic foraminiferal ratios: Modern patterns and Tertiary applicability},
  author = {Thomas G. Gibson},
  year = {1989},
  doi = {10.1016/0377-8398(89)90003-0},
  url = {https://pubs.usgs.gov/publication/70016064},
  note = {Source identifier: 70016064}
}