@misc{indiciae04220999c7c3,
  title = {Descriptive and comparative osteology of the oldest fossil squirrel Protosciurus (Rodentia: Sciuridae) / Smithsonian contributions to paleobiology — Illustration, Page 26},
  year = {1982},
  url = {https://www.biodiversitylibrary.org/page/58101754},
  note = {Source identifier: page-58101754}
}