@misc{indiciae6e5f3bf23058,
  title = {Thickness of Lower Cretaceous rocks, Powder River basin, Wyoming and Montana},
  author = {J. E. Fox and Debra K. Higley},
  year = {1987},
  doi = {10.3133/ofr87340p},
  url = {https://pubs.usgs.gov/publication/ofr87340P},
  note = {Source identifier: ofr87340P}
}