A 240-million-year-old fossil is the oldest known example of this disease in amniotes
A 240-million-year-old case of bone cancer has turned up in a fossil of an extinct ancestor of turtles.
“When we saw that this was not a break or an infection, we started looking at other growth-causing diseases,” says Yara Haridy, a paleontologist at the Museum für Naturkunde in Berlin.
Periosteal osteosarcoma, a malignant bone tumor.
“It looks almost exactly like human periosteal osteosarcoma,” Haridy says.