@misc{indiciaebfdec61f1095,
  title = {A detailed taxonomy of Upper Cretaceous and lower Tertiary Crassatellidae in the eastern United States: An example of the nature of extinction at the boundary},
  author = {G. Lynn Wingard},
  year = {1993},
  doi = {10.3133/pp1535},
  url = {https://pubs.usgs.gov/publication/pp1535},
  note = {Source identifier: pp1535}
}