@misc{indiciae18cffae6d201,
  title = {Stratigraphic sections of the Phosphoria formation in Wyoming},
  author = {V.E. McKelvey and L.E. Smith and R.A. Hoppin and F.C. Armstrong},
  year = {1951},
  doi = {10.3133/ofr5118d},
  url = {https://pubs.usgs.gov/publication/ofr5118D},
  note = {Source identifier: ofr5118D}
}