@misc{indiciae5fed39577c20,
  title = {Stratigraphic sections of the Phosphoria formation in Wyoming, 1949-50},
  author = {Richard Porter Sheldon and R.G. Waring and M.A. Warner and R.A. Smart},
  year = {1953},
  doi = {10.3133/cir307},
  url = {https://pubs.usgs.gov/publication/cir307},
  note = {Source identifier: cir307}
}