@misc{indiciae5ad7fbbaf8e9,
  title = {Pharyngeal denticles (placoid scales) of sharks, with notes on the dermal skeleton of vertebrates / American Museum novitates — Illustration, Page 6},
  year = {1970},
  url = {https://www.biodiversitylibrary.org/page/63006584},
  note = {Source identifier: page-63006584}
}