@misc{indiciae8caa9d51b54f,
  title = {Platyscaphites: a new ammonite from the Lower Campanian (Upper Cretaceous) of the United States Western Interior},
  author = {W. A. Cobban and W. J. Kennedy and N.H. Landman},
  year = {1999},
  url = {https://pubs.usgs.gov/publication/70094653},
  note = {Source identifier: 70094653}
}