@misc{indiciaecfc555c9be25,
  title = {Foraminifera from the Arctic Slope of Alaska; Part 2, Jurassic foraminifera},
  author = {Helen Tappan},
  year = {1955},
  doi = {10.3133/pp236b},
  url = {https://pubs.usgs.gov/publication/pp236B},
  note = {Source identifier: pp236B}
}