@misc{indiciaec47980261f29,
  title = {The Upper Cretaceous (Turonian) ammonite family Coilopoceratidae Hyatt in the Western Interior of the United States},
  author = {W. A. Cobban and S.C. Hook},
  year = {1980},
  doi = {10.3133/pp1192},
  url = {https://pubs.usgs.gov/publication/pp1192},
  note = {Source identifier: pp1192}
}