Bottom Line: This research letter documents bone cancer in a 240-million-year-old stem-turtle from the Triassic period, helping to provide more data about the history of cancer in tetrapod evolution. This is a case study about a highly malignant bone tumor on the femur of a shell-less stem-turtle. The appearance of the tumor in the fossilized specimen conforms with present-day periosteal osteosarcoma in humans.
Authors: Yara Haridy, M.S., of the Museum für Naturkunde, Berlin, Germany, and coauthors
(doi:10.1001/jamaoncol.2018.6766)
Editor’s Note: The article includes conflict of interest disclosures. Please see the article for additional information, including other authors, author contributions and affiliations, financial disclosures, funding and support, etc.
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