@misc{indiciae956408e19100,
  title = {Neogene calcareous nannofossil biostratigraphy of the Caribbean coast of Panama and Costa Rica},
  author = {Laurel M. Bybell},
  year = {1999},
  url = {https://pubs.usgs.gov/publication/70221594},
  note = {Source identifier: 70221594}
}