@misc{indiciae87ef02e83dd3,
  title = {Ferns from the Chinle Formation (Upper Triassic) in the Fort Wingate area, New Mexico},
  author = {S.R. Ash},
  year = {1969},
  doi = {10.3133/pp613d},
  url = {https://pubs.usgs.gov/publication/pp613D},
  note = {Source identifier: pp613D}
}