@misc{indiciaecf4598c2d4c3,
  title = {Stratigraphic sections of the Lignite-bearing Tongue River Member, Fort Union Formation (Paleocene), Southwestern North Dakota},
  author = {Peter D. Warwick and Kathleen R. Luck},
  year = {1995},
  doi = {10.3133/ofr95676},
  url = {https://pubs.usgs.gov/publication/ofr95676},
  note = {Source identifier: ofr95676}
}