@misc{indiciaedfffc91e0092,
  title = {Changes in stratigraphic nomenclature by the U. S. Geological Survey, 1965},
  author = {George Vincent Cohee and Walter S. West},
  year = {1966},
  doi = {10.3133/b1244a},
  url = {https://pubs.usgs.gov/publication/b1244A},
  note = {Source identifier: b1244A}
}