@misc{indiciae4c858e031d74,
  title = {The Late Cretaceous ammonites Scaphites leei Reeside and Scaphites hippocrepis (DeKay) in the western interior of the United States},
  author = {William Aubrey Cobban},
  year = {1969},
  doi = {10.3133/pp619},
  url = {https://pubs.usgs.gov/publication/pp619},
  note = {Source identifier: pp619}
}