@misc{indiciaea4ed1768dcd1,
  title = {Stratigraphy of the Morrison and related formations, Colorado Plateau region, a preliminary report},
  author = {Lawrence C. Craig and and others},
  year = {1955},
  doi = {10.3133/b1009e},
  url = {https://pubs.usgs.gov/publication/b1009E},
  note = {Source identifier: b1009E}
}