@misc{indiciae744c7c7afbac,
  title = {Stratigraphic relations and U-Pb geochronology of the Upper Cretaceous upper McCoy Mountains Formation, southwestern Arizona},
  author = {R. M. Tosdal and P. Stone},
  year = {1994},
  doi = {10.1130/0016-7606(1994)106<0476:sraupg>2.3.co;2},
  url = {https://pubs.usgs.gov/publication/70018039},
  note = {Source identifier: 70018039}
}