@misc{indiciae804c293f14e6,
  title = {Fossil proboscidea and edentata of the San Pedro Valley, Arizona},
  author = {James Williams Gidley},
  year = {1926},
  doi = {10.3133/pp140b},
  url = {https://pubs.usgs.gov/publication/pp140B},
  note = {Source identifier: pp140B}
}