@misc{indiciaefac7e5fb88c6,
  title = {Biodiversity changes in Cretaceous palynofloras of eastern Asia and western North America},
  author = {D. J. Nichols},
  year = {2003},
  doi = {10.1016/s1367-9120(02)00091-3},
  url = {https://pubs.usgs.gov/publication/70025407},
  note = {Source identifier: 70025407}
}