@misc{indiciae366829a2ad9b,
  title = {Callovian (Jurassic) ammonites from the United States and Alaska; Part 2. Alaska Peninsula and Cook Inlet regions},
  author = {R. W. Imlay},
  year = {1953},
  doi = {10.3133/pp249b},
  url = {https://pubs.usgs.gov/publication/pp249B},
  note = {Source identifier: pp249B}
}