@misc{indiciaef460333bdab3,
  title = {The Early Cambrian fossil Salterella conulata Clark in eastern North America},
  author = {E. L. Yochelson},
  year = {1970},
  doi = {10.3133/pp683b},
  url = {https://pubs.usgs.gov/publication/pp683B},
  note = {Source identifier: pp683B}
}