@misc{indiciae0dbaa36b4cd5,
  title = {Fieldiana. Zoology / The viperid snake Azemiops: its comparative cephalic anatomy and phylogenetic position in relation to Viperinae and Crotalinae — Illustration, Page 71 / Fig. 3},
  year = {1971},
  url = {https://www.biodiversitylibrary.org/page/2836486},
  note = {Source identifier: page-2836486}
}