@misc{indiciae9df5043bd1af,
  title = {Geologic maps of fossil localities in southeastern Pennsylvania},
  author = {George W. Stose and A.J. Stose},
  year = {1949},
  doi = {10.3133/ofr4949},
  url = {https://pubs.usgs.gov/publication/ofr4949},
  note = {Source identifier: ofr4949}
}