@misc{indiciae4b8e3c722d73,
  title = {Maps showing distribution of erosional clasts on the middle Jurassic J-2 unconformity in the western interior of the United States},
  author = {R. B. O'Sullivan and G. N. Pipiringos},
  year = {1998},
  doi = {10.3133/i2622},
  url = {https://pubs.usgs.gov/publication/i2622},
  note = {Source identifier: i2622}
}