@misc{indiciae4e732309d7b3,
  title = {Yorkshire type ammonites : the original descriptions reprinted, and illustrated by figures of the types, reproduced from photographs mainly by J.W. Tutcher — Illustration, Page 387},
  year = {1909},
  url = {https://www.biodiversitylibrary.org/page/31786830},
  note = {Source identifier: page-31786830}
}