@misc{indiciae9a2f3e21819c,
  title = {Field guide to the continental Cretaceous-Tertiary boundary in the Raton basin, Colorado and New Mexico},
  author = {C. L. Pillmore and D. J. Nichols and Fleming},
  year = {1999},
  doi = {10.1130/0-8137-0001-9.135},
  url = {https://pubs.usgs.gov/publication/70045672},
  note = {Source identifier: 70045672}
}