@misc{indiciaeddd72f35e239,
  title = {The Upper Cretaceous ammonite Watinoceras Warren in the Western Interior of the United States},
  author = {William Aubrey Cobban},
  year = {1988},
  doi = {10.3133/b1788},
  url = {https://pubs.usgs.gov/publication/b1788},
  note = {Source identifier: b1788}
}