@misc{indiciae77c6023ece3b,
  title = {Mattheva, a proposed new class of mollusks},
  author = {Ellis Leon Yochelson},
  year = {1966},
  doi = {10.3133/pp523b},
  url = {https://pubs.usgs.gov/publication/pp523B},
  note = {Source identifier: pp523B}
}