@misc{indiciae2849c6881de3,
  title = {Plant microfossils from the Lakota Formation},
  author = {Robert H. Tschudy and Sharon D. Van Loenen},
  year = {1966},
  doi = {10.3133/ofr66134},
  url = {https://pubs.usgs.gov/publication/ofr66134},
  note = {Source identifier: ofr66134}
}