@misc{indiciae3c62ea96e82a,
  title = {Geologic map of the Clifton House quadrangle, showing fossil zones in the Pierre Shale, Colfax County, New Mexico},
  author = {C. L. Pillmore and Glenn R. Scott},
  year = {1994},
  doi = {10.3133/gq1737},
  url = {https://pubs.usgs.gov/publication/gq1737},
  note = {Source identifier: gq1737}
}