@misc{indiciaed772011f4acb,
  title = {A new reference section for palynostratigraphic zonation of Paleocene rocks in the Rocky Mountain region},
  author = {D. J. Nichols and R. M. Flores},
  year = {2006},
  url = {https://pubs.usgs.gov/publication/70028106},
  note = {Source identifier: 70028106}
}