@misc{indiciae1e254299ba64,
  title = {Campanian ammonites from the Upper Cretaceous Gober Chalk of Lamar County, Texas},
  author = {W. A. Cobban and W. J. Kennedy},
  year = {1992},
  url = {https://pubs.usgs.gov/publication/70017262},
  note = {Source identifier: 70017262}
}