@misc{indiciaea2c0a73a5201,
  title = {Mollusks from the Pepper shale member of the Woodbine formation, McLennan County, Texas},
  author = {L. W. Stephenson},
  year = {1953},
  doi = {10.3133/pp243e},
  url = {https://pubs.usgs.gov/publication/pp243E},
  note = {Source identifier: pp243E}
}