@misc{indiciaecb6081c76dee,
  title = {General zoölogy; practical, systematic and comparative; being a revision and rearrangement of Orton's Comparative zoölogy — Illustration, Page 239},
  year = {1903},
  url = {https://www.biodiversitylibrary.org/page/23756721},
  note = {Source identifier: page-23756721}
}