@misc{indiciae5ba8e33e0087,
  title = {Ammonite accumulations in the Cretaceous Mowry and Aspen shales},
  author = {J.B. Reeside and W. A. Cobban},
  year = {1954},
  doi = {10.1126/science.119.3089.355.b},
  url = {https://pubs.usgs.gov/publication/70010725},
  note = {Source identifier: 70010725}
}