@misc{indiciae20e8a7b31e6a,
  title = {Shorter contributions to the stratigraphy and geochronology of Upper Cretaceous rocks in the Western Interior of the United States},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1995},
  doi = {10.3133/b2113},
  url = {https://pubs.usgs.gov/publication/b2113},
  note = {Source identifier: b2113}
}