@misc{indiciae1423ecb534b2,
  title = {A new Cretaceous-Tertiary boundary locality in the western Powder River basin, Wyoming: Biological and geological implications},
  author = {D. J. Nichols and J. L. Brown and M. Attrep and C. J. Orth},
  year = {1992},
  doi = {10.1016/0195-6671(92)90026-m},
  url = {https://pubs.usgs.gov/publication/70017160},
  note = {Source identifier: 70017160}
}