@misc{indiciae8e2beea7b166,
  title = {Planktonic foraminiferal assemblage of the Yorktown Formation, Virginia, USA},
  author = {H.J. Dowsett and L.B. Wiggs},
  year = {1992},
  url = {https://pubs.usgs.gov/publication/70017143},
  note = {Source identifier: 70017143}
}