@misc{indiciae891992ff4dc5,
  title = {Systematic position and stratigraphic significance of the marine Miocene diatom Raphidodiscus marylandicus Christian},
  author = {George W. Andrews},
  year = {1974},
  url = {https://pubs.usgs.gov/publication/70210183},
  note = {Source identifier: 70210183}
}