@misc{indiciaef5891668a71a,
  title = {A note on the occurrence of allocrioceras billinghursti Klinger, 1976 (Cretaceous Ammonoidea) in the Middle Turonian of the Western Interior of the United States},
  author = {W. A. Cobban and W. J. Kennedy},
  year = {1989},
  doi = {10.1016/0195-6671(89)90004-9},
  url = {https://pubs.usgs.gov/publication/70015634},
  note = {Source identifier: 70015634}
}