@misc{indiciae5daf0a40c97d,
  title = {Early Jurassic ammonites from Alaska},
  author = {Ralph Willard Imlay},
  year = {1981},
  doi = {10.3133/pp1148},
  url = {https://pubs.usgs.gov/publication/pp1148},
  note = {Source identifier: pp1148}
}