@misc{indiciaea406a01e4121,
  title = {Sporomorph biostratigraphy, floral changes, and paleoclimatology, Eocene and earliest Oligocene of the eastern Gulf Coast},
  author = {N. O. Frederiksen},
  year = {1988},
  doi = {10.3133/pp1448},
  url = {https://pubs.usgs.gov/publication/pp1448},
  note = {Source identifier: pp1448}
}