Bone cancer may be nearly as old as bones. Researchers find evidence of aggressive malignant tumor in femur of 240-million-year-old proto-turtle, the oldest case of bone cancer in amniotes, a lineage of four-limbed vertebrates that includes birds, reptiles, and mammals.

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Bone cancer may be nearly as old as bones. Researchers find evidence of aggressive malignant tumor in femur of 240-million-year-old proto-turtle, the oldest case of bone cancer in amniotes, a lineage of four-limbed vertebrates that includes birds, reptiles, and mammals.