@misc{indiciae00fb680f2045,
  title = {A preliminary report on the pollen and spores of the pre-Selma Upper Cretaceous strata of western Alabama},
  author = {Estella B. Leopold},
  year = {1964},
  doi = {10.3133/b1160e},
  url = {https://pubs.usgs.gov/publication/b1160E},
  note = {Source identifier: b1160E}
}