@misc{indiciae846f9c11dbf6,
  title = {Revision of the flora of the Green River formation, with descriptions of new species},
  author = {F. H. Knowlton},
  year = {1923},
  doi = {10.3133/pp131f},
  url = {https://pubs.usgs.gov/publication/pp131F},
  note = {Source identifier: pp131F}
}