@misc{indiciae6621a975bc7f,
  title = {Upper Cretaceous (Campanian and Maestrichtian) ammonites from southern Alaska},
  author = {David Lawrence Jones},
  year = {1963},
  doi = {10.3133/pp432},
  url = {https://pubs.usgs.gov/publication/pp432},
  note = {Source identifier: pp432}
}