@misc{indiciaeae5fdf593786,
  title = {The base of the Upper Jurassic Morrison Formation in east-central Utah},
  author = {Robert Brett O'Sullivan},
  year = {1984},
  doi = {10.3133/b1561},
  url = {https://pubs.usgs.gov/publication/b1561},
  note = {Source identifier: b1561}
}