@misc{indiciae820da4667991,
  title = {Reinterpretation of the palynology and age of laramide syntectonic deposits, southwestern Montana, and revision of the Beaverhead Group},
  author = {Douglas J. Nichols and W. J. Perry and J.C.H. Johns},
  year = {1985},
  doi = {10.1130/0091-7613(1985)13<149:rotpaa>2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70221513},
  note = {Source identifier: 70221513}
}