@misc{indiciae880365cc20f0,
  title = {Thickness of Lower Cretaceous Inyan Kara Group, Powder River basin, Wyoming and Montana},
  author = {J. E. Fox and Debra K. Higley},
  year = {1987},
  doi = {10.3133/ofr87340r},
  url = {https://pubs.usgs.gov/publication/ofr87340R},
  note = {Source identifier: ofr87340R}
}