@misc{indiciae86550575dd54,
  title = {Mollusks, Echinoderms, Coelenterates, etc. Part C Echinoderms — Illustration, BHL page 41715504},
  year = {1920},
  url = {https://www.biodiversitylibrary.org/page/41715504},
  note = {Source identifier: page-41715504}
}