@misc{indiciaedf79ac13e097,
  title = {Pachydiscus (Pachydiscus) hornbyense Jones, 1963, and P. (P.) catarinae (Anderson \& Hanna, 1935) (Cretaceous, Campanian; Ammonoidea), Pacific Realm marker fossils in the Western Interior Seaway of North America},
  author = {W. J. Kennedy and W. A. Cobban},
  year = {1999},
  url = {https://pubs.usgs.gov/publication/70073920},
  note = {Source identifier: 70073920}
}