@misc{indiciaeeed77ddfc1a5,
  title = {Changes in stratigraphic nomenclature by the U. S. Geological Survey, 1964},
  author = {George Vincent Cohee and Walter S. West},
  year = {1965},
  doi = {10.3133/b1224a},
  url = {https://pubs.usgs.gov/publication/b1224A},
  note = {Source identifier: b1224A}
}