@misc{indiciae8e83582081d0,
  title = {Middle Jurassic (Bajocian) ammonites from eastern Oregon},
  author = {Ralph Willard Imlay},
  year = {1973},
  doi = {10.3133/pp756},
  url = {https://pubs.usgs.gov/publication/pp756},
  note = {Source identifier: pp756}
}