@misc{indiciaeca7de71b70b6,
  title = {A new Upper Cretaceous rudistid from the Kemp clay of Texas},
  author = {L. W. Stephenson},
  year = {1938},
  doi = {10.3133/pp193a},
  url = {https://pubs.usgs.gov/publication/pp193A},
  note = {Source identifier: pp193A}
}