@misc{indiciaea108ca87abb8,
  title = {Illustrations of Cretaceous and Tertiary plants of the western Territories of the United States},
  author = {Ferdinand Vandeveer Hayden},
  year = {1878},
  doi = {10.3133/70039796},
  url = {https://pubs.usgs.gov/publication/70039796},
  note = {Source identifier: 70039796}
}