@misc{indiciae3b8ce7e98964,
  title = {The paleontology of rostroconch mollusks and the early history of the phylum Mollusca},
  author = {John Pojeta and Bruce Runnegar},
  year = {1976},
  doi = {10.3133/pp968},
  url = {https://pubs.usgs.gov/publication/pp968},
  note = {Source identifier: pp968}
}