@misc{indiciaec46bbb576609,
  title = {Cenomanian ammonite fauna from the Mosby sandstone of central Montana},
  author = {W. A. Cobban},
  year = {1953},
  doi = {10.3133/pp243d},
  url = {https://pubs.usgs.gov/publication/pp243D},
  note = {Source identifier: pp243D}
}